Washing Machine Motor ROBOT is back!
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- Опубліковано 26 січ 2019
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Paypal-Email-Address: inventordonations@gmail.com
Paypal-Donation-Link:
www.paypal.com/donate/?token=...
Link to the first video about the robot and the washing machine motor:
• Drivetrain with Washin...
• Inside a Washing Machi... - Наука та технологія
Hey guys, here is a link to the first video:
ua-cam.com/video/FgkcC7BnVCQ/v-deo.html
Here is a link to the video about the motor:
ua-cam.com/video/CtulRqznbzI/v-deo.html
Here are some links for the H-bridges:
United States:
www.ebay.com/itm/Double-BTS7960B-DC-43A-Stepper-Motor-Driver-H-Bridge-PWM-For-Arduino-Smart-Car/253852056130?hash=item3b1ac2fa42:g:2yMAAOSwkV1bemru
United Kingdom:
www.ebay.co.uk/itm/BTS7960B-43A-Double-DC-Stepper-Motor-Driver-H-Bridge-PWM-For-Arduino-Smart-Car/292732679681?hash=item44283a3601:g:hncAAOSw2stbemry
Germany:
www.ebay.de/itm/Double-BTS7960B-DC-43A-Stepper-Motor-Driver-H-Bridge-PWM-For-Arduino-smart-Car/381206284364?ssPageName=STRK%3AMEBIDX%3AIT&_trksid=p2057872.m2749.l2649
All countries: Just enter "BTS7960B" into the search bar (for example on Ebay) and you'll find this item from some supplier, I',m sure.
This video is continuing the essence of the old ones, I love how detailed you describe everything
YES !!
Nice to have you back in action. I really enjoy the way you do in depth explanations on your projects and inventions.
So true, this kind of stuff is what your channel is about. Switching converters, othet power electronics... Glad to see you bringing it back. Your tutorials on switching converters gave me solid understanding of the basics, which helped me to move on further.
Nice, washing machine motor robot and chemistry lab are the projects I were hoping for would continue. One of the two made it back, thank you!
Great that you returned to this project ! I was missing this kind of videos!
You already have the H bridge in the inverter, and simply have to remove the micro from inside it to get the H bridge connections free. The primary side likely uses a 3424 or clone as driver, and this will work alone to give the 300VDC you need, and then you can drive the H bridge already in there with your own controller, making it smaller and saving building the bridge again.
I guess you could do that, but he does need 2 H-bridges anyway to drive both motors, so it´s probably not worth it.
You could also leave the inverter intact completely, and only add an output from the DC bus. That way you could even use the AC output for some other load while driving the motors.
You could centre tap the motor windings and use a half H bridge on each motor, saving the need for two h bridges. Either that, or supply a constant 300vdc to the armature and control the motor torque / speed by changing the field current 👍
@@DatsunRacingTeam If you supplied constant voltage to the armature, as I understand it, you could never actually stop the motor, right?
You´re right about the center tap, although that would mean you need less voltage (or lower duty cycle) to drive those.
I'm very glad you're back in action on this washing machine robot project. I learn a lot from your ability to take ordinary devices, like an inverter, and repurpose them to do multiple tasks that they were not designed to do but can easily be adapted. You probably only have a vague idea as to what the final device will look like but that's how great inventor's minds work. I have several works-in-progress but only a few of them actually get finished due to some road-block or two that always comes up along the way. You have a much better track record than I of completing your projects so I'm very much looking forward to seeing the final result of this one. Keep up the great work!
Interesting project.I have nowhere near your expertise,but I made two observations: 1) the difference between forward and reverse is due to universal motors being biased in one direction by shifting the brushes in one direction.You can see the effect of this in a cordless drill.It will run slightly faster and have more power in the forward direction.
2) buy putting a single swivel caster in front the floor contact of the drive wheels will always be equal , as any floor irregularities will be negated. Think of a four legged table on an uneven surface VS a three legged one
I just wanted to say I enjoy your content. Also, please stop playing the numbers game with yourself. You even cite your old video's views. Please make content you enjoy and don't worry about it being super popular or not. I know its very hard to do that but do keep in mind you'll be a lot happier if you stop looking at the numbers.
This is the best advice in the long run
317K subs...don't think he needs to worry about numbers at all
Since watching your first washing-machine-motor videos, I've finally salvaged a nice motor for my own experiments.... So I'll be spending a lot of this weekend re-watching the whole "Washing-machine-motor" series.
Chaos that's part of a bigger plan sounds like a good life-strategy to me.
This video felt like reconnecting with an old friend, and I really enjoyed it. Thank you for this! Great work.
Glad to see this project coming back. Great work as always, sir!
Beautiful new shop! Great to have you creating again. Congrats on landing the design gigs!
Nice to have you back with that project! I´ll give it a few more minutes to convert in 1080p before I watch it. By the way, that is a beatiful blacksmith vice you got there!
So, you mentioned using the boost converter from the automotive inverter, but that's already hooked to a high voltage high current h-bridge. Just cut the control lines and use your own to make one of those inverters a full high voltage motor driver. you probably also get current sense feedback somewhere in there too and a 5v logic supply
Thank you! This is for what I subscribed! Keep this direction, great.
Great video!! The best for a long time. Much appreciated. I look forward to your converter build
Cool project!!!! Taking us through the design of such an inverter circuit would be the cherry on the cake.
Ive wanted to try this so bad im glad someone has finally posted a video of their experience
Wow, thanks mate! nice project.
New subscriber here!
That robot looks awesome!
Very best of luck!
There is a ton of useful hacks in your video. After watching this, I know I will be a better maker and UA-camr. Thanks a million!!
Finally!! I have been waiting for so long... this is one of the coolest ideas ever..
good to see the project going again!
Gotta say the new shop is a major plus to your videos.
Great video!!
Great video! I love your new lab.
Love your channel bro..lots of awesome idias👍..i built a carnival ride for my kids with wheelchair parts..salvage iron..and snowmachine parts..we called it the magnetron..working on a new one called the tumbler..will be asking for some pointer when i start .thanks 4 ur knowledge-sharing
Excellent project 👍
I can predict that the peak motor operation will be whats on the label of the motor as the manufacturer designed it lol
Interested in seeing the rest of this project
Very interesting. Thank You
I really like your chaotic and complex bigger plans !!
Good luck to you sir!
I love you vids there so cool
You might also be loosing traction because of no suspension. 3 points of contact would likely give you more traction on a "flat" surface.
Good thinking. Yeah, the drive wheels need to be able to stay in contact with the ground.
You will be the best tech. video producer soon. Wow, keep this up. This is exciting. Thank you.
Good video.
I think it needs a bit more gearing otherwise your motors are going to spend too much time at stall where they are inefficient. Nice to see you doing this kind of work!
I would love to see you hook up with the bike guys you're sharing a space with now. It would be great to see a dual motor cargo bike! I know you mentioned this before and IMO it would be the culmination of your efforts to create such a utilitarian form of personal transport by such utilitarian means with salvaged parts.
i actually smiled when i saw your video, GreatScott and you uploaded a video today, it's the day
I love this man and his plan.
Good 2 see you with your Robotics projects. Hope there will be a video on your DIY OPTICAL ENCODERS..
0:09 Thought you are drilling the can.
You make very good videos and they are very useful and interesting, thanks very much. I will follow you.
I believe the traction issue is more to do about the rigid framed 4 wheeled design. One of the 4 wheels can lose traction if the floor is uneven, or one of the wheels runs over an object. Switching to one caster wheel would solve this. Or, put the cross member that the caster wheels are attached to, on a pivot so that the cross member can tilt keeping the casters on the ground independent of the frame.
It's getting interesting. Keep it up.
I love the washing machine robot
Nice content. subscribed!
The theory is extremely exciting. It may eventually be strong enough to carry a significant weight. Good job. Keep it up. Awsome.
Your channel and that of "Jan Beta" are my favourite german UA-cam-Channels with english videos.
DC motor. Volts = speed, amps = power. Increase the size of your wires (not enough copper for the amps needed) to get more amps to the motor for more torque. Increase field amps to get more starting torque, lower amps to get more speed.
You might be interested to look into using car alternator as universal motor, drop the diode pack out and connect the 3 phase leads to a ESC Electronic Speed Control from Radio Control Equipement to give you variable 3 phase supply, and use a PWM dc variable supply between 1 to 6 volts on the field coil and you can have complete fine tuning for torque and speed control. Alternator would make ideal motor for Robot. Bare in mind the more voltage in the field coil will slow motor down because of magnetic lock up (drag) as not been used to generate power with external source to turn it.
TPAI is back! The new space definitely works for you bro.
Fancy doing some old school stuff and drawing some diagrams explaining the functions of a few common inverters to us normies who don't have your understanding of power electronics?
I was wondering if you would rig some crude track rods onto the casters and then control their direction with a stepper motor recovered from somewhere.
looking good . id work with one motor coupled to a reducer mechanism instead of two motors. im following this project , its inspirational.
I am looking forward to your controller videos. As I shall need a controller to supply 240V DC to the 8 washing machine motors in my family electric car. That I am building from scratch. Your videos have always inspired me to do more. Thank you very much my good friend. Have a great day tomorrow.
Nice to see you back. Hope you are doing well. Wish my German was 1/2 as good as your English. I enjoy your videos.
Hi Guys, Why didn't you start with a wheelchair (NOT scooter) with a joystick, I use one all the time & it does the same as your washing machine robot straight out of the box. You can always pick up old ones as disabled people (Except me) can't usually do repairs on them, such as changing the batteries. All the controller equipment is in the joystick, It's easy. I hope this is helpful for you.Keep up the good videos. Regards, Ian.
10:09 that freaking side panel fan on the computer its fucking huge
Are the drive motors going to have optical encoders? In my experience casters have a problem with the deadband required to turn them in the correct direction, the encoders might be able to compensate for that, and tell which direction the robot is moving without external sensors, because one wheel would be going faster than the other, if the caster got stuck sideways. BTW I love your vids too, keep it up 🤓.
Hello!! I always follow your video, savege electric components and power electronics are my passions;) I also look forward to arc welder. Anyway here I'm asking for some parameters you used for powering the engine, which current and voltage are you using for the rotor and stator? Thank you so much and all the best!!
Cooles Projekt, ich bin gepsannt!
Genau!
Would be wonderful if you could get your hands on a new washing machine motor that has a controller with it. Just scrapped our old washing machine and it would seem there is a separate controller that just gets ac and some signals to control the speed and probably direction.
It all depends on what your plans for the robot are, but I'd have gone for a forklift-like steering rather than for caster wheels. The problem with these is that no matter how precise you control both motors, you'll always have an error proportional to the distance between the caster-wheels' contact-point and it's rotational axis' center, and this will cause it to hit everything around when maneuvering in tight or confined spaces. Another solution for the driver you didn't mention or contemplate is using AC out of the inverter with triacs, which would be much more efficient than rectifying it's output back to DC. Also, if you have the lathe operational, you might want to rebuild those hubs, which besides rotating off-center, might need some rotary encoding implemented for motor control.
Tig, nice
Not complaining but you know us old people sit in hover rounds motorized wheel chairs thier every where just saying.glad your back😎
You're a brave man, putting a workbench against single pane glass windows. I'd be too worried about accidentally breaking one. Do you have any tough clear plastic that you could use as a window guard?
I was looking for a comment about the WINDOW! Yes. Do NOT put sparks on glass!!! Metal sparks stick melt into the glass and can rust.
A sheet of Poly-Carbonate will fix that problem.
don't bother rectifying the inverter output, just remove the pwm! inside the inverter is a step up circuit that produces the ~300v dc, which is then fed through a pwm H-bridge to give chopped AC
edit: oh i'm an idiot i commented before watching further -.-
Let me say it in my native language: Einfach nur geil! :-D
Great video. Question. Why not driving the filed coil and rotor in series, you would save significant amount of current when the motor are stopped ?
I need this set up for my sons pram. It could rock him to sleep for me!!
Could you use an adjustable current source for your fields to give more control of your motor torque / speed? For instance, even just a two stage "high / low" current source where there is more field current for high torque requirements, and lower field current to allow a higher top speed?
A complicated engineering plan. That is very surprising from a German. I look forward to seeing the result.
I was just watching the previous episodes recently as I've got a broken washing machine 😂
Great you re on it again. If you want to use it with 12V from a car battery couldnt you just use an electric car starter? I know they draw a lot of current but unless you dont want to start a motor I think thats something that can be regulated smoothly.
TPAI Motor and controller from electric wheel chairs would be great if you could find such. Save all the work to change AC to DC etc. Whatever thanks for letting us see the work. I think the 4 wheel robot you chose will be a lot steadier than a 3 wheel one.
HES BACC
Now if you could make it with a modular attachment system, you could make it into a universal gadget that could sweep, vacuum, mop, mow, walk the dog, etc.... :D
hey bro, thanks for this helpful video, i just wanna ask how much weight of kilograms this washing motors can handle and can move with.
I would love to see a video to tell how you learned all that you know about electronics. Did you go to university or are you self taught?
easier fix is do a multiple taps on the motor armature coils! and use the one more convenient to a lower voltage..
Would it not make sense to have the weight of the motors closer to the driving wheels?
Or was that a design limitation dictated by the length of the drive belts?
it's a complex project. If any of you expect that it will be like these 5 minutes heavily edited simple DIY youtube videos think again. I'm actually surprised that he did so many things in the time he wasn't posting anything.
I'm sure as the Lab becomes more equipped the pace of videos and projects will be faster. One advice I might give him .. don't open so many projects at the same time. Focus on one and if you're stuck, open 1 or 2 more .. but not much more than this
Look at amazingdiyprojects he uses mains power tools for motors in his battery powered projects. He uses multiple battery packs in series to get a very high battery voltage, high enough for the universal motors in the power tools
Great video PAI! Just a suggestion, it would be more efficient both in moving and steering if you only used one castor. It also occurred to me that converting 12V to 300+V trades current draw from battery to volts, which would mean you will need a battery with a lot of current capacity. Would it not be equally heavy and expensive if you equipped this with a bunch of batteries giving you the required volts? I can see that this second route will require balancing circuits for the battery pack, but then it doesn't need a boost converter...just a thought. Looking forward to the next vid!
Volts or amps, the importat thing is what power they can deliver. Depending on the type of battery, no balancing needed for lead acid.
@@LunaticCharade Agree Petter, but inefficiencies occur in every buck / boost stage, so reducing such stages should give slightly better run time. Mind you, this is a general rule of thumb - I don't know how efficient each stage is so perhaps its not a big deal after all.
@@BenMitro yeah, the most efficient is probably a boost converter that is also the control stage. Since a power Hbridge in pwm have much of the losses as a switching converter, and they are almost the same thing except the inductor part. Though when driving a motor that is also an inductor! Probably also the most difficult design to implement. Otherwise many series batteries are probably the most efficient.
Im guessing that he wont use the specified rpm of the motor, so the full voltage is not needed(in a crude way, volts=Speed, amps=torque). Half voltage might be Good enough. But with gearing he might use the full range so se shall see!
@@LunaticCharade - thanks Petter, that was a succinct summary of the conversion processes!
Not exactly Boston Dynamics but everyone has to start somewhere.
Boston Dynamics, pretty amazing stuff.
@@noweare1 scary stuff. Change often is not a good thing.
@@1pcfred It's when the robots start out thinking us. That's the scary stuff.
@@noweare1 I think they may only have to out run us before it begins to be a problem. Some of the critters I've seen are getting pretty fast on legs too.
Did you tried using the TDA1085 chip to control the speed of the motor for AC aplications?
Awesome work. If you connect more than one battery and H bridges in series you will get high voltage DC. Would that be an option?
What is the ultimate goal with this? For it to be autonomous with its own power source like a solar panel and some sort of sensing and ai?
Another solution might be to use some tool batteries and combine them to get the voltage you want.
What will you mount on the robot once it is controllable?
👌
Nothing wrong with wood in ya robot!
is the TIG welder scratch start?
It seems to me rather than all this screwing around one would be much better off just to buy 2 12vdc cordless screwdrivers or drills. Then hack in an H bridge or a controller. Plus I don't think your undervoltaged washing machine motors are going to have much torque when it comes to getting up hills or hauling a serious load which is what you insinuate when you show a frame that heavy duty.
Can I use one of the Washing machine motor and make an ebike
And does it able to pull 90kg load
And for that what's the Voltage required?
Moin! ^^)
If you consider making life a bit simpler for you and smack in permanent magnets, maybe having a chat with the magnet factory in Bonn might be worthwhile? Just an idea. They are around the corner from your place, after all. Nicely big Neodyniums? Sounds sexy, doesn't it? :oD
please can you make one video on replacing the projector's old Mercury lamp to LED
I will not pretended to know a lot about electronics, But wouldn't it not be easier to build a step-up DC power supply with amperage you need, then a micro controller with a Uln2003 to drive relays for the forward and revers directions ?
Supplying a constant current to the field coils seems impractical.
I think it would be better to connect the rotor and field coils in parallel and to add a bridge rectifier to the field coil, to keep the motor bi-directional.
I think that would not be a constant current making steering unpredictable.
@@MrScooter46290 Constant current does not mean constant power or rather constant speed. You'd need positional sensing and feedback for this robot anyways or else it would go off course as soon as it hit a bump. The motors already have speed sensors in them so might as well implement a more efficient drive control mechanism along with the positional sensing. This robot will be completely useless if it has to drag a cable along with it so it has to be efficient enough to operate with batteries. Otherwise the cable would get tangled around any obstacle, provided this robot is somewhat autonomous and not RC.