I program UR Robots at work and I have to say that your controller concept is genius. Having a scaled model that you can actively move makes so much sense. Yes, Freedrive mode is helpful, but it's so awesome to be able to move it in real time like that while also being out of the way. Really awesome project, I'd really like to build it soon.
Awesome project brother. Qidi on the other hand are a different story. They offered to donate a used printer to me last year as i lost mine in a hurricane. I was starting a channel to do video lessons for the local makerspace and they lead me on for over 3 months. Then one day said no. I asked them for a discount as i had donated thousands of dollars worth of arduinos and such to the makerspace . I have severe social anxiety due to ptsd from being a first responder, i have a software engineering degree i never used and found that getting back into coding and building stuff helped me so i wanted to help others and help myself at the same time as I've barely left the house in a decade and figured it would help me get over the anxiety. They crushed me and i gave up on the whole thing, they could've said no or just give me a discount or not have lead me on for so long. I was looking for a good printer and had enough to buy a crappy one or a decent xmax (i was 200 short of the retail price) and i wanted to buy proper recording gear. I ending up being soured on 3d printing for 6 months and bought a new guitar and oscilloscope instead and donated the rest. I send arduino learning kits anywhere in Canada or the US for free. I include a decent multimeter, soldering station, aalong wirh a ton of other stuff. All i ask is that the person be genuine with not having the means to get it themselves and if they dont like the hobby to let me pay postage for the dmm and soldering station as i spend over 200 on those two items alone. Ill help people if they want to learn but there are no strings attached. Seeing them sponsor people triggers me hard because of the dishonesty. Every video wouldve mentioned them and i was just looking for a discount. I respect the fact if someone said no as well. I havent solicited any companies for charity since. I spend half my disposable income on helping others. Enabling others is a better way to look at it as i dont even need to know the person's name. Being a good, honest person is no better than being a criminal these days. Being honest is more important and saying what you're thinking (while treating others in a way youd like to be treated) seems to stop the most outspoken person in their tracks if it means they have to say no to something when asked. I could see if it was in person and i put them on the spot. Qidi sent a friend their most expensive printer and he gave it a 2 minute review and threw it away. (It was too expensive to ship as i was going to buy it). Theyd rather that then to be known as caring about the community, even the ones who keep us safe at night and now suffer from illnesses that will never go away. Another creator friend threw their printer out a 2 story window in a short after an interview. He was moving and lived too far away to ship it as well. I hope they read this. Im disappointed more than anything. I still plan to purchase a printer off them as well. But anonymously with my wife's Amazon account. If you know anyone who wants to get into the hobby or would like a robot arm kit like the awesome one you shared, just email me. I have all the parts. It can go through you if you want. Ill laser engrave the acrylic too and add leds to the kit haha. Thanks for the content.
Hey man, I'm a graduate in product design but I would like to learn some more electronics and mechatronics etc. I have arduino, 3d printer etc already. Would you be willing to give me some lessons? Respond with your username on Discord or something and I'll add you.
Just finished building this and the only major improvement I could suggest would be to make all the clamshell pieces have locating features (pins and holes, tung and groove, etc) to make the pieces fit and stay together better.
This is a really nice project, and I am in the process of building it. There are many such projects on UA-cam, but I've yet to see anyone who has then used the arm for a revenue-generating practical purpose.
this is a late comment so I'm not sure if you'll see it, I was wondering what you did for power, other than "connecting it." I think I understand and am capable of building everything else, as you layed it out quite nicely! I'm excited to build this as my first project with my new printer, thank you!
Really cool project nearly finished mine myself, one of my servos going the opposite was to the potentiometer controller and just figuring out how to fix, any ideas would be amazing thx
Your tutorials are easy to follow and the quality of the movement is great! congrats on doing this w/ only a single arduino file ha! outstanding intro for any makers w/out a ton of programming experience. i2c w/ the PCA9685 is great and scalable. I'm curious if you have any upgrade vids planned. I don't see signs of filtering the servo data in adafruit's default driver code - I imagine that could be a great technique for folks too. I'd also consider capacitors and sharing the STEP files? Eliminating glue and adding inset hex nuts to the main parts would make this extremely serviceable
Hello! Thanks! Unfortunately, this is most likely the last video I will publish for this robot arm. Great ideas regarding the upgrades, though! If you'd like to experiment with the design a bit, here is the link to the old designs and Fusion 360 files: drive.google.com/drive/folders/1x4P8AquQILwCp8e5CiRJLfVJiJn2U4cF?usp=sharing
@@buildsomestuff Thanks for the reply! Stoked to see what you make next. Is there any chance you could add STEP or IGES files to that gDrive folder? It'd be easier to mod w/ those in addition to the fusion360 files
AWESOME project! the best robotic arm I've ever seen on UA-cam. The description contains a file with 25 3D elements is that all that is needed to build it?
Could you be fixing that you could be programming the moves? So it actually memorise the moves? And you could just lean back meanwhile the robot are doing the preprogrammed things? For example adding some more buttons. Button one: You are moving the arm direction Z, X, Y When you are not pushing the button anymore, it stops. But you could also be pushing second button for the gripper and memorise that too?
First of all i wanted to thank you for the thorough walk through and the detailed explanations. This is my first "big" project in electronics i am doing. I have a small question that might come off a bit unknowledgeable. For this project i need a power source/supplier. How do i pick my power source? Do i get a battery? an adjustable power supply (that seems the best choice but also most expensive). How do I know what Voltage and current i need to supply in this type of project? Thank you very much!
Idk what i did, but nothing but the LED on the arduino works. It's definitely something with the wiring i did, which is just barely holding together, but everything is pluged into the correct stuff (i think)
I've been speaking with the electronics engineers at my work and it looks like for standard two-prongled LEDs, you need a resistor in series with the wiring, otherwise the LED either will pop or, after a short period of time, die out (which mine did). I've added a resistor and it looks like the LED is back on.
Hi @build Some Stuff. Nice projects and thanks for sharing. One quick question, why is the wrist potentiometer wired differently? Based on the video (5:14) the positive and ground wires are swapped compared to other potentiometers. This is different from the schematic. Would appreciate your help on this. thanks.
Thanks! Sorry for the confusion: I made the controller a little while back, so, unfortunately, I can't remember exactly why I did this. I believe that when I was testing the controller with the servos, the last servo was rotating in the opposite direction and was not correctly mapping the potentiometer. I am not exactly sure why it would have done this. By swapping the 5V and GND wires on the potentiometer, one can essentially reverse the direction of the servo rotation in relation to the controls. However, it may have just been a mistake that I compensated for later in the code. I would suggest trying the way they are shown in the schematic first. Then, if the wrist servo moves in reverse, you can swap the two wires. Hope this helps!
Beautiful work.. from an 'old' maker to a 'new' one! The only thing I would add, use silicone grease on all gears and moving 'sliding' components. I was planning on making a third hand for my bench like this. I may use your arm. Currently, I have a modified Inmoov arm helping out but while it looks cool, this is much more practical. Thank you for sharing this! subscription well earned! I am curious, what made you blow 3 servos? programming over limit or load issue?
Thank you so much for this video! I've learned so much and you are amazing for keeping this open source. I'm super new to electronics so I ran into an issue with the micro servo for the gripper. When I press the button the servo doesn't move. It will move the 90 degrees to close at the beginning (line 28 of the code) but won't move beyond that. When I switched it out with a regular servo (MG996R) everything ran fine and the button opened/closed the gripper. Plus the pin 13 test light turns on/off when the button is pressed, so I'm confused. Wiring isn't the issue either since when I connect the micro servo to the pins controlled by a potentiometer, the micro servo runs perfectly. I've tried to troubleshoot: I've assigned the micro servo to different pins on the driver board, re-copied the code over, and, checked the voltage with a multimeter (it was within the correct range for the servo), but I'm still sort of stuck. Any help would be appreciated. Thanks!
Congrat! awesome project, I will do it, question: why one of the servos is hi torque 20kg? can i use only Mg 996R? and at the time to upload code from arduino, how must to be the potenciometers? what position? you showed the position of mini arm controler, and said in started position, but we can't see the position of the potenciometers. Thanx so much!
I’m doing a similar project like this(I’m a beginner) but I have learned a solid foundation during the first semester of school. What exactly do micro controllers help with. I’ve seen tutorials using potentiometers without microcontrollers but when I try, the servos will work for short periods of time until they start stuttering, moving on their own, or not moving at all. Any ideas if a micro controller could help this or even something else?
Thanks! I made the controller a little while back, so, unfortunately, I can't remember exactly why I did this. I believe that when I was testing the controller with the servos, the last servo was rotating in the opposite direction and was not correctly mapping the potentiometer. I am not exactly sure why it would have done this. By swapping the 5V and GND wires on the potentiometer, one can essentially reverse the direction of the servo rotation in relation to the controls. However, it may have just been a mistake that I compensated for later in the code.
I believe all should be correct now. However, if you do experience a mirrored output on the last segment, swapping the wires mentioned above should do the trick.
El primer problema que tube al armarlo es la sensibilidad de los potenciómetros los cuales se me arruinaron demaciado rápido y los tenia que cambiar muchas veces, algo recomendable para esto?
Hello! I'm not exactly sure what this issue would be, but it may be caused by your potentiometers' resistance rating. I'm using 10k pots for the controller. I've linked my exact potentiometers in the description.
Hello very well made design. I have only one question about power supply so I read 7V power supply enough but what current works well. I have two options 5A and 10A? thanks in advance
Me and a couple friends managed to assemble this whole thing for a school project, however we're running into an issue where when we upload the code, none of the other servos move as the potentiometer does. We tested all of the potentiometers' connection without plugging into the servo driver and it reads, but as soon as we hook everything up to the driver only the microcontroller for the gripper functions properly. Some help would be greatly appreciated, thanks for the great tutorial!
Hello, great project and I’m very interested in building it, however I am struggling to find the wiring diagram on the link you have in the description
@@buildsomestuff yes I did notice that link in the description, however it shows 26 files, 25 of which are 3D printing models and 1 which is the ino code. I’m sure the diagram is there somewhere and I’ll feel stupid upon finding it but right now I genuinely can’t figure out where it is.
It still doesn't work, if I only plug in the Power the driver doesn't turn on, but I've tested it with an LED an there is power, but the driver doesn't turn on. But if I plug in the Arduino the driver turns on but the voltage is missing an the servos do nothing. Could anyone help me 😢
I would recommend checking the wiring. I'm going to build this soon so I will have more of a understanding of the robot and possibly help you if you still have the problem
I got this working, but my hand servo doesn't move and the smaller arm with the pentiometers doesn't move the bigger arm unless I hold the button down, when the button should control the smaller servo for the hand. Any ideas where I went wrong?
Hello, I'm from Spain and I find all your videos very interesting. I have a 3D printer and some Ardyino parts to be able to assemble it, but I don't know how to program it. Is there a way to copy your program?
This is only happening with my mg 996 servos. All 3 of them keeps spinning at forward or reverse direction, Just noticed these are 360° servo. I am so dumb. Anyway to fix it or i am just gonna have to open it up and start again?
Great video, and beautiful robot! But I'm curious ... why you are using the library from Adafruit? Why not do something more straightforward with built-in Arduino functions (such as using map() to connect the inputs to the outputs)?
Thanks! It wasn’t visible in the video, but I do make use of the map() function later down in the code. However, I believe I needed to include some sort of library capable of communicating with the Adafruit PCA9685 Servo Driver Module to control the PWM of the servo motors. If I only used the map function without including a library for the PCA9685, I’m not sure I would be able to correctly control the servos.
No problem! Yah, I’ve run servos directly from the Arduino before. While it is less complicated, it can become impractical when controlling more than just a couple servos. Since I need to power 5 servo motors for this arm, it would draw too much current through the Arduino’s 5V pin and possibly fry the board altogether. The PCA9685 Module supplies power directly from an external power supply to prevent this from happening, which allows me to control up to 16 servos without worrying about burning up the micro controller.
hello I have been trying to build this robot but for 1-2 weeks but yet still can't find out why my servo motors don't move when I am ready to put it in the starter position I did unscrew all the parts like in the video and also screw them back on like 10 times just to find out the reason on why it won't work I am thinking it is because of the wire's they are probably miss placed on my end from either the control or from the boards can anyone help me out here I would really apricate it thank you.🙂
Can i use the same 20 kg servo that you use at the base for all the other servos(i didn't pay attention at the start and bought 4 of the 20kg servos in the description😂)? i have yet to complete the build but i am afraid that i may have to change the code and i don't know anything about programming. Also i love your videos.
I notice that when wiring the pots on the controller you wire the left hand pin on the 'wrist' pot to the right hand pin on the 'elbow' pot. and I notice that the elbow to shoulder pots are wired left pin to left pin and right pin to right pin. Is there a reason for the inversion of the wrist to elbow wiring? I am pretty new to wiring, just want to make sure i do it right. Thanks again for tutorial!
@@stowjer I made the controller a little while back, so, unfortunately, I can't remember exactly why I did this. I believe that when I was testing the controller with the servos, the last servo was rotating in the opposite direction and was not correctly mapping the potentiometer. I am not exactly sure why it would have done this. By swapping the 5V and GND wires on the potentiometer, one can essentially reverse the direction of the servo rotation in relation to the controls. If you do experience a mirrored output on the last segment, swapping the wires mentioned above should do the trick.
@@buildsomestuff Ok. Many thanks for your quick reply! I've been spending the afternoon getting to grips with the wiring! going great so far! cheers from London 👍
Hello, I’m Abo it to put everything together. Just wanted to ask, when you plug the Arduino in to upload the code, do you also plug in the power supply at the same time so the servos work, or will that be too much voltage and fry something?
I’m just a fellow 8th grader who was successfully able to make this project! I just have one query, what should we do if the servo motors just break? Could anyone help? Thank you!
Hey, is the code that is shown in the video all the code you need? Or is there more to it? I’m sorta new to coding and I’m struggling to figure out if there is more to it or not
how are the 3 gears connected in the wrist? i have glued one gear to the gripper part but the gear doesnt potrude far enough through the side plate to mesh with the other gears if that makes sense. in part 1 that seems to be the case for you but in part 2 its no longer an issue
@@buildsomestuff it is at 7:30. where the 3 gears mesh together. the one gear that is glued to the hand /gripper isn't tall enough to reach the center gear or the servo gear. thanks for your response
@@joboprecise1103I don’t seem to see the issue in Part 1 or Part 2 at 7:30, but, if you have three small washers under the middle gear, removing one of these washers or adding washers under the gripper gear to push it out may do the trick. Hope this helps!
Heya, I'm in the final throws of the project and I've hit a brick wall of an issue and I was wondering if there's any advice available. I've wired everything up as shown and downloaded the code to the arduino. I've powered it up with a external PSU but all the servos (appart from the gripper servo) seemingly are fluctuating about 5-10 degrees before cylcing back. I'm guessing there's electrical noise somewhere in the setup somewhere, but I'm unsure where to look! Any ideas :)
@@mr.q1880 (bear in mind that I’m learning as I went along here) from memory, I think the scaled down version of the arm with the potentiometers in the pivot points were causing me the issues in addition the servo control module. In the end, I think I used a bog standard breadboard and linked new potentiometers straight into the analog inputs of the Arduino. From there, the robot was a lot more responsive (although I found a lot of the cables inside the arm were getting heavily strained inside the body) Hope this helps mate, and good luck
@@Svenboiii I'm very sorry if I'm disturbing your class because it's 11pm in Asia. I printed the 3D files and started working on this project. Finally, can you please provide more details about the 3 gears used, like diameter size, number of teeth and hole size because with 58 gears I don't know which one to use? - What 4 types of servo motors are there (180 degrees or 270 degrees or 360 degrees)? Thanks a lot.
Is it safe to share ground pin of servo driver board and Arduino board? Could there be potential ground loop? (I don't know much about circuit designs)
Hello! I used an adjustable power supply in this video with terminal connectors. However, the T-Plug can certainly be soldered directly to the 7V power supply.
I finally got it all hooked up but i'm having an issue with the gripper.. when i push the button it will open up but when i release it it just stays open forever, any idea what could be wrong? in the serial log it prints released and pressed correctly but it just doesn't move the servo
That's strange.🤔 I would double check the switch and servo wiring in relation to the Arduino. You may also want to redownload the code incase any lines were changed accidentally. Hope this helps!
You use two power supplies. One for the Arduino and one for the servo controller, right? What would be their voltage and amps? Can anyone help me with this question?
hello i have been wanting to make a robotic arm but i always find it so complicating thankfully this video has been very helpful but i have no idea how he assembled the controller can someone pls share the diagram or like explain it to me
Hello! I briefly explain the controller's wiring and assembly at the time stamp 4:45 in this video, and I have also linked a detailed wiring diagram of the arm and controller in the description. The controller's wiring can be found on the right hand side of the wiring diagram. Hope this helps!
Hi again i am sorry but i couldn't find the diagram or the controller i looked at thingyverse and it's not there (i can't find it) so may you please share the link in the comments@@buildsomestuff
@@kemal3967 The wiring diagram should be the second image to show up on the Thingiverse page here: www.thingiverse.com/thing:6313449 Let me know if you don’t see it there!
how big could i scale this to . I know loaded question but I have decent mechanical knowledge and I can fix simple issues. Any tips if i wanna make a very large one. Thanks.
Hello i like your videos so much. Can you please share the 3d robot Design because i am so fascinate of this Model. I also want to make a Robot like this but i dint have any 3d Design.
hello, i decided to make this project, and i started to buy the pieces, print the parts but icant find the code. someone help me? i cant see the code in printables(sorry for bad english, (from turkey))
Great project man. I have a question about the male T plug connector. what is that connector connected too, power wise?(battery, outlet, laptop supply, stand alone power supply). Thanks again for the concise videos.
Did you find your answer ? Bc I still looking how to power it , didnt get into Wiring process for now but advancing and I guess 5V supply should be enough
Hi! I ha e build the robot same way you did. I have a problem with power distribution. If I power the robot over the servo board, nothing is working. No lights no movement. If I power it over the arduino, lights are up, but still no movement. Wiring is correct and solid. I use a 9v power source .any ideas?
My guys doesn't care about UA-cam Meta , uplodings each week to boost your channel and hype people about projet ...; nahh he 'aint got time for that , he got to Build Some Stuff 😄
Could i use a higher voltage power supply like a 12 volt or would i be able to use a buck-down converter to make it 7 volt? also is wattage gonna be a issue if i do this?
I haven’t experimented with routines much, but it has been done before. I believe it requires some sort of storage device (such as a Raspberry Pi) to store all of the positions. You could probably find some helpful videos covering the topic in depth here on UA-cam.
I’m not exactly sure about the motor question. Adding a claw to make the controller more closely resemble the arm would definitely be possible, but would require some redesign to the last segment.
Hello, I made this and I’m getting shaking from my servos they are the 20kg ones the strong ones. I’m using a variable desktop power supply which should have plenty of power. Any thought on what’s causing this?
Hmm. That’s strange. The first thing I’d do is double check the wiring. If everything is correct, it may be that the 20 kg servos are drawing too much current from the servo driver board. If you are still experiencing jitter, I’d recommend checking how much current the servos are drawing when they all move at the same time, and how much your power supply is capable of producing. If the current drawn from the servos is higher than what your power supply is capable of producing, you may want to consider upgrading the power supply or replacing 3 of the 20 kg servos with the cheaper 12 kg servos as shown in the video. Hope this helps!
Hello! The print time can vary quite a bit depending on your 3D Printer. With the QIDI X-Plus3 shown in this video, the print time was only around 6 hours for all of the parts. However, with a standard printer this time may be closer to 15-20 hours.
thanks for the speedy reply i have been looking around for cheap beginner robotic arm projects and yours is by far the most affordable for entry level participants. @@buildsomestuff
I’m at the step where you have to put the button into the controller. But it seems my button has… well… prongs on the back? I can’t fit it in there, as you don’t show it in the video. The prongs make it impossible to fit in there. Do I have the wrong button? Do I bend the prongs? Does the button need a depression? Please tell me, me and my friend are so confused. 5:07 Sorry if Im being stupid, but we are new to this. We don't really have any background knowledge of electronics.
so your diagram is ground to ground on the pots, but it looks like on your mini arm, your ground wrist goes to vcc on the elbow? am i missing something, cause it looks like your diagram doesnt match the physical robot.
Hello! While the material cost is relatively low at around $60. The total cost to purchase everything upfront is much higher at around $200. However, this is assuming that you have none of the suggested parts and would need to purchase everything. And, most of the purchases included in this total have more parts than what is required for this project. For example, the linked micro servo pack comes with 4 servos, but only one is needed. Hope this helps!
@@WarreRaes Not quite. I’m feeding 7V into the servo driver’s main input terminal, then running the V+ pin on the servo driver board to the VIN pin on the Arduino. So, the servo driver is powering the Arduino. I’ve linked a detailed wiring diagram in the description. Hope this helps!
@@WarreRaes All together, the servos draw about 1.5 Amps. 30 Volts is probably a bit much for this application, unless you can regulate it down to something under 12V.
Thanks for this tutorial.. I have got one problem..the MG996R servo doesn’t stop after move the Controller and keeps rotating in the some direction of the potentiometer..? But the servos stops after return the controller to start position! I tried to change the code and control each servo separately but the same problem..However,the Micro servo motor works just fine and follows the potentiometer.. Can you help please.. With All Thanks 🙏🏻
I program UR Robots at work and I have to say that your controller concept is genius. Having a scaled model that you can actively move makes so much sense. Yes, Freedrive mode is helpful, but it's so awesome to be able to move it in real time like that while also being out of the way. Really awesome project, I'd really like to build it soon.
Interesting that you work with UR robots. I've got some questions if you'd like to connect.
Awesome project brother.
Qidi on the other hand are a different story. They offered to donate a used printer to me last year as i lost mine in a hurricane. I was starting a channel to do video lessons for the local makerspace and they lead me on for over 3 months. Then one day said no. I asked them for a discount as i had donated thousands of dollars worth of arduinos and such to the makerspace . I have severe social anxiety due to ptsd from being a first responder, i have a software engineering degree i never used and found that getting back into coding and building stuff helped me so i wanted to help others and help myself at the same time as I've barely left the house in a decade and figured it would help me get over the anxiety. They crushed me and i gave up on the whole thing, they could've said no or just give me a discount or not have lead me on for so long. I was looking for a good printer and had enough to buy a crappy one or a decent xmax (i was 200 short of the retail price) and i wanted to buy proper recording gear.
I ending up being soured on 3d printing for 6 months and bought a new guitar and oscilloscope instead and donated the rest.
I send arduino learning kits anywhere in Canada or the US for free. I include a decent multimeter, soldering station, aalong wirh a ton of other stuff. All i ask is that the person be genuine with not having the means to get it themselves and if they dont like the hobby to let me pay postage for the dmm and soldering station as i spend over 200 on those two items alone. Ill help people if they want to learn but there are no strings attached.
Seeing them sponsor people triggers me hard because of the dishonesty. Every video wouldve mentioned them and i was just looking for a discount. I respect the fact if someone said no as well. I havent solicited any companies for charity since. I spend half my disposable income on helping others. Enabling others is a better way to look at it as i dont even need to know the person's name. Being a good, honest person is no better than being a criminal these days. Being honest is more important and saying what you're thinking (while treating others in a way youd like to be treated) seems to stop the most outspoken person in their tracks if it means they have to say no to something when asked. I could see if it was in person and i put them on the spot.
Qidi sent a friend their most expensive printer and he gave it a 2 minute review and threw it away. (It was too expensive to ship as i was going to buy it). Theyd rather that then to be known as caring about the community, even the ones who keep us safe at night and now suffer from illnesses that will never go away. Another creator friend threw their printer out a 2 story window in a short after an interview. He was moving and lived too far away to ship it as well.
I hope they read this. Im disappointed more than anything. I still plan to purchase a printer off them as well. But anonymously with my wife's Amazon account.
If you know anyone who wants to get into the hobby or would like a robot arm kit like the awesome one you shared, just email me. I have all the parts. It can go through you if you want. Ill laser engrave the acrylic too and add leds to the kit haha.
Thanks for the content.
Hey man, I'm a graduate in product design but I would like to learn some more electronics and mechatronics etc.
I have arduino, 3d printer etc already.
Would you be willing to give me some lessons?
Respond with your username on Discord or something and I'll add you.
Or alternatively add mine: tom99999_
Just finished building this and the only major improvement I could suggest would be to make all the clamshell pieces have locating features (pins and holes, tung and groove, etc) to make the pieces fit and stay together better.
Great idea! Thanks for sharing!
did you set the potentiometer to any particular position before attaching to body?
Looks really good! Can't wait to get the parts and build this.
WHO TF ARE YOU? BECAUSE YOU'RE A GENIUS! THANKS!!
It's amazing!!! Congrats!!! Beautiful and useful project!! I'll use with my postgraduate students!!!
This is a really nice project, and I am in the process of building it. There are many such projects on UA-cam, but I've yet to see anyone who has then used the arm for a revenue-generating practical purpose.
Just finished building this amazing project and helpful tutorial you are a really guineas thank you
printing as we speak looking forward to build this project
Awesome build and tutorial! Well done! I'm looking forward to see the next project!
Awesome Video Man. Thank you so much for making such a detailed video. Go Engineerrs Baby !!!!
this is a late comment so I'm not sure if you'll see it, I was wondering what you did for power, other than "connecting it." I think I understand and am capable of building everything else, as you layed it out quite nicely! I'm excited to build this as my first project with my new printer, thank you!
Great job!! Awesome build for a simple robot. The tutorial was great too. Thanks!
Love Beastiarum! Even better to see the models painted and played with!
Can you please make a mini tutorial for the controller, so that I know I am doing everything right.
if you do find one can you put the link under this comment, please and thank you.
Really cool project nearly finished mine myself, one of my servos going the opposite was to the potentiometer controller and just figuring out how to fix, any ideas would be amazing thx
@@bradleywood-i2x Swapping the two outer-most wires on the corresponding potentiometer should do the trick!
Your tutorials are easy to follow and the quality of the movement is great! congrats on doing this w/ only a single arduino file ha! outstanding intro for any makers w/out a ton of programming experience. i2c w/ the PCA9685 is great and scalable. I'm curious if you have any upgrade vids planned. I don't see signs of filtering the servo data in adafruit's default driver code - I imagine that could be a great technique for folks too. I'd also consider capacitors and sharing the STEP files? Eliminating glue and adding inset hex nuts to the main parts would make this extremely serviceable
Hello! Thanks! Unfortunately, this is most likely the last video I will publish for this robot arm. Great ideas regarding the upgrades, though! If you'd like to experiment with the design a bit, here is the link to the old designs and Fusion 360 files: drive.google.com/drive/folders/1x4P8AquQILwCp8e5CiRJLfVJiJn2U4cF?usp=sharing
@@buildsomestuff Thanks for the reply! Stoked to see what you make next. Is there any chance you could add STEP or IGES files to that gDrive folder? It'd be easier to mod w/ those in addition to the fusion360 files
@@planckstudios Certainly! I have now added STEP files for both the new arm and new controller designs to the Google Drive folder!
@@buildsomestuff so cool! Thank you!
@@planckstudios No problem!
Just excellent!... Thanks.
Liked... already Subscribed.
AWESOME project! the best robotic arm I've ever seen on UA-cam. The description contains a file with 25 3D elements is that all that is needed to build it?
and what the hand is powered by
Could you be fixing that you could be programming the moves?
So it actually memorise the moves? And you could just lean back meanwhile the robot are doing the preprogrammed things?
For example adding some more buttons.
Button one: You are moving the arm direction Z, X, Y
When you are not pushing the button anymore, it stops.
But you could also be pushing second button for the gripper and memorise that too?
First of all i wanted to thank you for the thorough walk through and the detailed explanations. This is my first "big" project in electronics i am doing. I have a small question that might come off a bit unknowledgeable. For this project i need a power source/supplier. How do i pick my power source? Do i get a battery? an adjustable power supply (that seems the best choice but also most expensive). How do I know what Voltage and current i need to supply in this type of project? Thank you very much!
Idk what i did, but nothing but the LED on the arduino works. It's definitely something with the wiring i did, which is just barely holding together, but everything is pluged into the correct stuff (i think)
im in the same boat have rewired everything and cant get the code to do anything
I've been speaking with the electronics engineers at my work and it looks like for standard two-prongled LEDs, you need a resistor in series with the wiring, otherwise the LED either will pop or, after a short period of time, die out (which mine did). I've added a resistor and it looks like the LED is back on.
amazing cant wait to build it !!! 😛
Hi @build Some Stuff. Nice projects and thanks for sharing. One quick question, why is the wrist potentiometer wired differently?
Based on the video (5:14) the positive and ground wires are swapped compared to other potentiometers. This is different from the schematic.
Would appreciate your help on this. thanks.
Thanks! Sorry for the confusion: I made the controller a little while back, so, unfortunately, I can't remember exactly why I did this. I believe that when I was testing the controller with the servos, the last servo was rotating in the opposite direction and was not correctly mapping the potentiometer. I am not exactly sure why it would have done this. By swapping the 5V and GND wires on the potentiometer, one can essentially reverse the direction of the servo rotation in relation to the controls. However, it may have just been a mistake that I compensated for later in the code. I would suggest trying the way they are shown in the schematic first. Then, if the wrist servo moves in reverse, you can swap the two wires. Hope this helps!
Thanks a lot. You are right the wires need to be swapped as the wrist turns in the opposite direction
nice work👍
nicely done
Beautiful work.. from an 'old' maker to a 'new' one! The only thing I would add, use silicone grease on all gears and moving 'sliding' components. I was planning on making a third hand for my bench like this. I may use your arm. Currently, I have a modified Inmoov arm helping out but while it looks cool, this is much more practical. Thank you for sharing this! subscription well earned! I am curious, what made you blow 3 servos? programming over limit or load issue?
Thank you so much for this video! I've learned so much and you are amazing for keeping this open source. I'm super new to electronics so I ran into an issue with the micro servo for the gripper. When I press the button the servo doesn't move. It will move the 90 degrees to close at the beginning (line 28 of the code) but won't move beyond that. When I switched it out with a regular servo (MG996R) everything ran fine and the button opened/closed the gripper. Plus the pin 13 test light turns on/off when the button is pressed, so I'm confused. Wiring isn't the issue either since when I connect the micro servo to the pins controlled by a potentiometer, the micro servo runs perfectly. I've tried to troubleshoot: I've assigned the micro servo to different pins on the driver board, re-copied the code over, and, checked the voltage with a multimeter (it was within the correct range for the servo), but I'm still sort of stuck. Any help would be appreciated. Thanks!
Congrat! awesome project, I will do it, question: why one of the servos is hi torque 20kg? can i use only Mg 996R? and at the time to upload code from arduino, how must to be the potenciometers? what position? you showed the position of mini arm controler, and said in started position, but we can't see the position of the potenciometers. Thanx so much!
I’m doing a similar project like this(I’m a beginner) but I have learned a solid foundation during the first semester of school. What exactly do micro controllers help with. I’ve seen tutorials using potentiometers without microcontrollers but when I try, the servos will work for short periods of time until they start stuttering, moving on their own, or not moving at all. Any ideas if a micro controller could help this or even something else?
Thank you for sharing this video, It looks great. Could you tell which weight it can lift?
Great project, how come the ground and 5v on the top potentiometer are wired opposite to the other 4 ?
Thanks! I made the controller a little while back, so, unfortunately, I can't remember exactly why I did this. I believe that when I was testing the controller with the servos, the last servo was rotating in the opposite direction and was not correctly mapping the potentiometer. I am not exactly sure why it would have done this. By swapping the 5V and GND wires on the potentiometer, one can essentially reverse the direction of the servo rotation in relation to the controls. However, it may have just been a mistake that I compensated for later in the code.
@@buildsomestuff does that mean if i'm following this guide i should switch the wiring also? or is the code corrected?
I believe all should be correct now. However, if you do experience a mirrored output on the last segment, swapping the wires mentioned above should do the trick.
Im new to 3D printing and this is amazing!
How did you manage to screw your 3d parts in? Did you just brute force them through the holes?
El primer problema que tube al armarlo es la sensibilidad de los potenciómetros los cuales se me arruinaron demaciado rápido y los tenia que cambiar muchas veces, algo recomendable para esto?
Hello! I'm not exactly sure what this issue would be, but it may be caused by your potentiometers' resistance rating. I'm using 10k pots for the controller. I've linked my exact potentiometers in the description.
Can you make a tutorial on how to model this beast?
Hello very well made design. I have only one question about power supply so I read 7V power supply enough but what current works well. I have two options 5A and 10A?
thanks in advance
Thanks! Either should work fine, as this arm only draws around 3 Amps.
can u explain the DOF for each motor & the mathematics of the project ?
If you have a gaming laptop - would be very interested to see if you could replicate Mobile Aloha style training.
Me and a couple friends managed to assemble this whole thing for a school project, however we're running into an issue where when we upload the code, none of the other servos move as the potentiometer does. We tested all of the potentiometers' connection without plugging into the servo driver and it reads, but as soon as we hook everything up to the driver only the microcontroller for the gripper functions properly. Some help would be greatly appreciated, thanks for the great tutorial!
Same problem
Got the same issue, try to move slowly and gently, got some issue to find the right control interval of the potentiometer !
Thinking of creating an Discord to talk about the arm issues
@@TheBoss64340 ye probs the best idea. I would've thought the creator would've made one but nah. Let me know if you make one I'll join
@@sterling4680 struggling to let you know the server link or my username with youtube how could I provide you my username
Hello, great project and I’m very interested in building it, however I am struggling to find the wiring diagram on the link you have in the description
@@555amry Hi there! Wiring diagram should be available through the Printables link in the description.
@@buildsomestuff yes I did notice that link in the description, however it shows 26 files, 25 of which are 3D printing models and 1 which is the ino code. I’m sure the diagram is there somewhere and I’ll feel stupid upon finding it but right now I genuinely can’t figure out where it is.
@@buildsomestuffguess what I just found… thank you
@@555amry Awesome! No problem!
It still doesn't work, if I only plug in the Power the driver doesn't turn on, but I've tested it with an LED an there is power, but the driver doesn't turn on. But if I plug in the Arduino the driver turns on but the voltage is missing an the servos do nothing. Could anyone help me 😢
I would recommend checking the wiring. I'm going to build this soon so I will have more of a understanding of the robot and possibly help you if you still have the problem
Hey creator, it’ll be a awesome idea if u made a 6+ axis robot, I might improve on this design as well
I got this working, but my hand servo doesn't move and the smaller arm with the pentiometers doesn't move the bigger arm unless I hold the button down, when the button should control the smaller servo for the hand. Any ideas where I went wrong?
I got the same problem, I litterally just built it
do you think you can build a car with robot arms on the sides?
BRAVISSIMO 👏👏👏👏👏👏👏
Hello, I'm from Spain and I find all your videos very interesting. I have a 3D printer and some Ardyino parts to be able to assemble it, but I don't know how to program it. Is there a way to copy your program?
Hello! Yep! You can find the code on the Thingiverse page linked in the description.
Ok so i built it but a bit of issue. My servo keeps spinning instead of stopping at a position of the potentiometer. Any help?
This is only happening with my mg 996 servos. All 3 of them keeps spinning at forward or reverse direction, Just noticed these are 360° servo. I am so dumb. Anyway to fix it or i am just gonna have to open it up and start again?
nice moves!
Great video, and beautiful robot! But I'm curious ... why you are using the library from Adafruit? Why not do something more straightforward with built-in Arduino functions (such as using map() to connect the inputs to the outputs)?
Thanks! It wasn’t visible in the video, but I do make use of the map() function later down in the code. However, I believe I needed to include some sort of library capable of communicating with the Adafruit PCA9685 Servo Driver Module to control the PWM of the servo motors. If I only used the map function without including a library for the PCA9685, I’m not sure I would be able to correctly control the servos.
@@buildsomestuff Thanks for clarifying. Have you ever tried driving servos directly off the pwm pins on the Arduino board?
No problem! Yah, I’ve run servos directly from the Arduino before. While it is less complicated, it can become impractical when controlling more than just a couple servos. Since I need to power 5 servo motors for this arm, it would draw too much current through the Arduino’s 5V pin and possibly fry the board altogether. The PCA9685 Module supplies power directly from an external power supply to prevent this from happening, which allows me to control up to 16 servos without worrying about burning up the micro controller.
@@buildsomestuff Too true. Power is always the hard check on reality. Thanks for the reply
@@androofroo No problem! :)
Great video!
I only have one question, how many Volts and Amps do i need to use it?
Have a nice day!
Do you have like a list of bom for all nuts and bolts used?
Hello! Unfortunately, I don't have a written BOM. However, all parts are shown in the two Assembly Tutorials.
hello I have been trying to build this robot but for 1-2 weeks but yet still can't find out why my servo motors don't move when I am ready to put it in the starter position I did unscrew all the parts like in the video and also screw them back on like 10 times just to find out the reason on why it won't work I am thinking it is because of the wire's they are probably miss placed on my end from either the control or from the boards can anyone help me out here I would really apricate it thank you.🙂
Can i use the same 20 kg servo that you use at the base for all the other servos(i didn't pay attention at the start and bought 4 of the 20kg servos in the description😂)? i have yet to complete the build but i am afraid that i may have to change the code and i don't know anything about programming. Also i love your videos.
Thanks! 20kg servos in all joints should work fine without any code changes!
I have a question, im so down because my Arm doesn't work. To what Voltage do I have to set the Adjustable Power Supply?
@@themtbcrew4029 Sorry to hear that, the arm should be set to 7V.
Thank you sooo much, I also found one soldering flaw by me. I hope this was the Problem, I will give an update and thanks for the quick reply.
Mine doesn't work too idk whats the problem when I power it servo start moving randomly@@themtbcrew4029
@@themtbcrew4029did it end up working?
I notice that when wiring the pots on the controller
you wire the left hand pin on the 'wrist' pot to the right hand pin on the 'elbow' pot. and I notice that the elbow to shoulder pots are wired left pin to left pin and right pin to right pin.
Is there a reason for the inversion of the wrist to elbow wiring? I am pretty new to wiring, just want to make sure i do it right.
Thanks again for tutorial!
@@stowjer I made the controller a little while back, so, unfortunately, I can't remember exactly why I did this. I believe that when I was testing the controller with the servos, the last servo was rotating in the opposite direction and was not correctly mapping the potentiometer. I am not exactly sure why it would have done this. By swapping the 5V and GND wires on the potentiometer, one can essentially reverse the direction of the servo rotation in relation to the controls. If you do experience a mirrored output on the last segment, swapping the wires mentioned above should do the trick.
@@buildsomestuff Ok. Many thanks for your quick reply! I've been spending the afternoon getting to grips with the wiring! going great so far!
cheers from London 👍
Hello, I’m Abo it to put everything together. Just wanted to ask, when you plug the Arduino in to upload the code, do you also plug in the power supply at the same time so the servos work, or will that be too much voltage and fry something?
I’m just a fellow 8th grader who was successfully able to make this project! I just have one query, what should we do if the servo motors just break? Could anyone help? Thank you!
question, did you move the potentiometer to any particular position before attaching to the body?
Hey, is the code that is shown in the video all the code you need? Or is there more to it? I’m sorta new to coding and I’m struggling to figure out if there is more to it or not
@@gamingscorpionindia1995 I'm having the same problem as you, did you solve it?
how are the 3 gears connected in the wrist? i have glued one gear to the gripper part but the gear doesnt potrude far enough through the side plate to mesh with the other gears if that makes sense. in part 1 that seems to be the case for you but in part 2 its no longer an issue
Hello! So that I can visualize the problem, what time stamp in part one does this issue appear?
@@buildsomestuff it is at 7:30. where the 3 gears mesh together. the one gear that is glued to the hand /gripper isn't tall enough to reach the center gear or the servo gear. thanks for your response
@@joboprecise1103I don’t seem to see the issue in Part 1 or Part 2 at 7:30, but, if you have three small washers under the middle gear, removing one of these washers or adding washers under the gripper gear to push it out may do the trick. Hope this helps!
if one were to want to record positions off of the controller to create a program and run it, what would need to be added to this design?
Heya, I'm in the final throws of the project and I've hit a brick wall of an issue and I was wondering if there's any advice available. I've wired everything up as shown and downloaded the code to the arduino. I've powered it up with a external PSU but all the servos (appart from the gripper servo) seemingly are fluctuating about 5-10 degrees before cylcing back. I'm guessing there's electrical noise somewhere in the setup somewhere, but I'm unsure where to look! Any ideas :)
I'm having the same problem as you, did you solve it?
@@mr.q1880 (bear in mind that I’m learning as I went along here) from memory, I think the scaled down version of the arm with the potentiometers in the pivot points were causing me the issues in addition the servo control module. In the end, I think I used a bog standard breadboard and linked new potentiometers straight into the analog inputs of the Arduino.
From there, the robot was a lot more responsive (although I found a lot of the cables inside the arm were getting heavily strained inside the body)
Hope this helps mate, and good luck
@@Svenboiii I'm very sorry if I'm disturbing your class because it's 11pm in Asia. I printed the 3D files and started working on this project.
Finally, can you please provide more details about the 3 gears used, like diameter size, number of teeth and hole size because with 58 gears I don't know which one to use?
- What 4 types of servo motors are there (180 degrees or 270 degrees or 360 degrees)?
Thanks a lot.
question, do i have to have potentiometer at a particular position when attaching to the controller body?
Hey, I have a question. Is the code that is shown on video the only code you need? Or is there more to it?
Also, since the servo motors automatically correspond to the pots, I don’t think you’d have to.
Is it safe to share ground pin of servo driver board and Arduino board? Could there be potential ground loop? (I don't know much about circuit designs)
Hi, I was wondering how you connected the male T plug to the power supply. Did you just directly solder it to the power supply wires?
Hello! I used an adjustable power supply in this video with terminal connectors. However, the T-Plug can certainly be soldered directly to the 7V power supply.
Ah I see. So you directly screwed the T plug wires into the terminal connector of the adjustable power supply. Thank you for the clarification.
@@pdog9598 Yep! No problem!
I finally got it all hooked up but i'm having an issue with the gripper.. when i push the button it will open up but when i release it it just stays open forever, any idea what could be wrong? in the serial log it prints released and pressed correctly but it just doesn't move the servo
That's strange.🤔 I would double check the switch and servo wiring in relation to the Arduino. You may also want to redownload the code incase any lines were changed accidentally. Hope this helps!
You use two power supplies. One for the Arduino and one for the servo controller, right? What would be their voltage and amps? Can anyone help me with this question?
What do you think? Any odea how to add a bluetooth tx to get it wireless?
ESP32 should do the trick
does the middle gear engage both gears left and right?
can I use micro servo motors for the wrist and hand instead of the normal ones
Bro in upcoming days can make a record and play function for this robotics arm
hello i have been wanting to make a robotic arm but i always find it so complicating thankfully this video has been very helpful but i have no idea how he assembled the controller can someone pls share the diagram or like explain it to me
Hello! I briefly explain the controller's wiring and assembly at the time stamp 4:45 in this video, and I have also linked a detailed wiring diagram of the arm and controller in the description. The controller's wiring can be found on the right hand side of the wiring diagram. Hope this helps!
Hi again i am sorry but i couldn't find the diagram or the controller i looked at thingyverse and it's not there (i can't find it) so may you please share the link in the comments@@buildsomestuff
@@kemal3967 The wiring diagram should be the second image to show up on the Thingiverse page here: www.thingiverse.com/thing:6313449 Let me know if you don’t see it there!
Hey I have rewired this 3 times now and it just cant get it to work any tips will help thank you
how big could i scale this to . I know loaded question but I have decent mechanical knowledge and I can fix simple issues. Any tips if i wanna make a very large one. Thanks.
Hello i like your videos so much. Can you please share the 3d robot Design because i am so fascinate of this Model. I also want to make a Robot like this but i dint have any 3d Design.
learn english
First of all, download the 3d model in the description? Second of all, if this is not what you are asking, please try and use better grammar.
when i plugged it in the power supply started smoking, any idea what the issue would most likely be ?
how many volts/amps should be supplying through the t plug?
many thanks
@@stowjer 7V, the arm draws roughly 3A, but I’d allow for 5A to be safe.
@@buildsomestuff nice one, thank you!
the moment of truth is getting near! Learned so much doing this!
@@buildsomestuffallot of our arms aren't working
hello, i decided to make this project, and i started to buy the pieces, print the parts but icant find the code. someone help me? i cant see the code in printables(sorry for bad english, (from turkey))
Great project man. I have a question about the male T plug connector. what is that connector connected too, power wise?(battery, outlet, laptop supply, stand alone power supply). Thanks again for the concise videos.
Did you find your answer ? Bc I still looking how to power it , didnt get into Wiring process for now but advancing and I guess 5V supply should be enough
@@TheBoss64340 hey did you figure out how your supplying power. i am also struck at that phase
@@saikrishnasaitana6929 using a PC power supply with 5V line, next Im gonna create my own battery lipo with cells, BMS etc
@@TheBoss64340 thanks alot i am also going for lipo battery.
@@saikrishnasaitana6929 only limit is the intensity be carerul about that
the servo boards in your amazon list aren't the same in the video
Hi! I ha e build the robot same way you did. I have a problem with power distribution. If I power the robot over the servo board, nothing is working. No lights no movement. If I power it over the arduino, lights are up, but still no movement. Wiring is correct and solid. I use a 9v power source .any ideas?
maybe the current is not enough so thats why youre having some issues
My guys doesn't care about UA-cam Meta , uplodings each week to boost your channel and hype people about projet ...; nahh he 'aint got time for that , he got to Build Some Stuff 😄
Could i use a higher voltage power supply like a 12 volt or would i be able to use a buck-down converter to make it 7 volt? also is wattage gonna be a issue if i do this?
yes i had this question
can you use 12 or 5 volts
5 Volts should work! The PCA9685 Module is rated for 5 to 10 volts.
@@buildsomestuff The potentiomters don't snap on to the 3d printed parts any idea how I could fix this thanks
Is it posible to change positions to do a routine?
I haven’t experimented with routines much, but it has been done before. I believe it requires some sort of storage device (such as a Raspberry Pi) to store all of the positions. You could probably find some helpful videos covering the topic in depth here on UA-cam.
Hello, the maximum voltage for the pca9685 (servo driver board) is 6 volts yet you still supply it with 7, how?
One more thing, how could I make the controller have motors instead, and have a claw instead of a button, any idea on how I could do that?
I’m not exactly sure about the motor question. Adding a claw to make the controller more closely resemble the arm would definitely be possible, but would require some redesign to the last segment.
Hello, I made this and I’m getting shaking from my servos they are the 20kg ones the strong ones. I’m using a variable desktop power supply which should have plenty of power. Any thought on what’s causing this?
Hmm. That’s strange. The first thing I’d do is double check the wiring. If everything is correct, it may be that the 20 kg servos are drawing too much current from the servo driver board. If you are still experiencing jitter, I’d recommend checking how much current the servos are drawing when they all move at the same time, and how much your power supply is capable of producing. If the current drawn from the servos is higher than what your power supply is capable of producing, you may want to consider upgrading the power supply or replacing 3 of the 20 kg servos with the cheaper 12 kg servos as shown in the video. Hope this helps!
Sometimes adding a little friction at the joints can stop jitter.
how many collective hours of printing is the robot arm and mini robot arm?
Hello! The print time can vary quite a bit depending on your 3D Printer. With the QIDI X-Plus3 shown in this video, the print time was only around 6 hours for all of the parts. However, with a standard printer this time may be closer to 15-20 hours.
thanks for the speedy reply i have been looking around for cheap beginner robotic arm projects and yours is by far the most affordable for entry level participants.
@@buildsomestuff
@@TimLukeAnderson Awesome! No problem!
can i do this but without 3d printing?
i could make it out of cardboard and spray paint it but the design needs to be changed
I’m at the step where you have to put the button into the controller. But it seems my button has… well… prongs on the back? I can’t fit it in there, as you don’t show it in the video. The prongs make it impossible to fit in there. Do I have the wrong button? Do I bend the prongs? Does the button need a depression? Please tell me, me and my friend are so confused. 5:07
Sorry if Im being stupid, but we are new to this. We don't really have any background knowledge of electronics.
Hey, I have a question. Is the code that is shown on video the only code you need? Or is there more to it?
so your diagram is ground to ground on the pots, but it looks like on your mini arm, your ground wrist goes to vcc on the elbow? am i missing something, cause it looks like your diagram doesnt match the physical robot.
How much it may cost at least for all those things i need?
Hello! While the material cost is relatively low at around $60. The total cost to purchase everything upfront is much higher at around $200. However, this is assuming that you have none of the suggested parts and would need to purchase everything. And, most of the purchases included in this total have more parts than what is required for this project. For example, the linked micro servo pack comes with 4 servos, but only one is needed. Hope this helps!
how did you learn this stuff
what awg wire did you use ?
Hello! 28 AWG wire here!
will the servo's get hot?
Can you make a new tutorial just about the wireing for begineers😊
Awesome build! But how did you power the whole arm?
Thanks! I’m using an adjustable power supply (linked in description) and running it at 7 volts. But really, any 7V power supply should do.
So you are feeding 7v to the arduino uno vcc pin?
@@WarreRaes Not quite. I’m feeding 7V into the servo driver’s main input terminal, then running the V+ pin on the servo driver board to the VIN pin on the Arduino. So, the servo driver is powering the Arduino. I’ve linked a detailed wiring diagram in the description. Hope this helps!
@@buildsomestuff Do you know how much power you need to operate the arm? Would a 30V 10A 300W bench top powersupply do the job?
@@WarreRaes All together, the servos draw about 1.5 Amps. 30 Volts is probably a bit much for this application, unless you can regulate it down to something under 12V.
Thanks for this tutorial..
I have got one problem..the MG996R servo doesn’t stop after move the Controller and keeps rotating in the some direction of the potentiometer..? But the servos stops after return the controller to start position!
I tried to change the code and control each servo separately but the same problem..However,the Micro servo motor works just fine and follows the potentiometer..
Can you help please..
With All Thanks 🙏🏻
I'm having the same problem as you, did you solve it?
everything works but only 2 servos move but when they do they twitch. idk why and iv been trying to find the probem for a while now but i cant
How much power is needed from the power supply?