Відео

Hi, thank you for your message :) You can find the link of the stepper motors I use in the video description. It was on stepperonline, it's also available in Germany ;)

​@@aurelguest1 Omg my bad! Thank you for pointing it out :) Have a nice weekend!

No problem, I hope it will help :)

Et aurais tu le prix de ce projet ?

Salut, je n'ai pas les ressources en français. J'ai utilisé celles en lien dans la description. De quoi as tu besoin exactement (liste de matériel, assemblage) ? Le prix du projet doit être d'environ 400€. J'ai détaillé les coûts dans un autre commentaire

@@aurelguest1 Je débute compretement dans la robotique , avant de faire ca je pense me tourner vers un plus petit que j'ai trouvé sur thingiverse ... MErci pour ta réoinse je reviendrais surement quand je ferais ce bras !

OK cool :) n'hésite pas

Hey, that's cool ! No, it's not the same thing. The "selfoil bearing" are used to hold or guide the screws and prevent play between the screws and the part. You can look at the user manual to find out. It's the first steps

approx. how many kg of pla? I must color match for my OCD

it depends on how you print it. I think i had to use between 2 and 3 kilograms for mine. try to slice every parts on Cura to have a better approx

It was a Creality Ender 3 :)

@@aurelguest1 Thanks 😎

Yes merci ! ;) Oui je connais les robots de Niryo, ils sont intéressants. Ils ont vraiment l'air bien pour prendre en main la robotique !

I tried to calculate the total cost of the project. I found a total of around 380€. There is 130€ for the stepper motors, 30€ for the fasteners, 40€ for the transmission (pulley and belt), 60€ for 3D printing parts and 120€ for the rest of the components (arduino, servo, power supply, drivers, ramps...)

I don't remember exactly the settings I used to slice the pieces, but I just tried with basic settings on cura (20% infill, 0.4mm nozzle, layer height = 0.28 mm and supports) and it takes about 2.5kg of PLA. What settings are you using ? I remember it took me a week to print everything. I updated the video description with the steppers I use. Joint 4 is a bit weak so maybe you can take a stronger one. I don't know the price of everything but the most expensive was all the electronic with 130€ for the steppers.

@@aurelguest1 My slicer settings are 35% infill, 5 walls, 0.6 nozzle, 0.4 layer hight and supports. It took me 75 hours with a speed of 150mm. Some detailed parts are printed with 100% infill with 0.4 nozzle and 0.15 layer hight. (I use a delta printer (SuperRacer) cause my ender wasn't fast enough)

@@Tomtom5893 Ok cool :) I think a 0.6 nozzle is a good idea, I always use this now ;) But if you want to save time and material, you can reduce the filling rate and the thickness of the walls. I have never used the SuperRacer printer. Is the build plate large enough for the large parts?

@@aurelguest1 I want it really sturdy so I was going with 5walls and 35 infill. In all of the videos I saw its cracking and sounds like the parts are almoust breaking. Maybe I go down to 4 walls and 30 infill. Even this with a 0.6 nozzle should be more stable. Also less material and time... The SR has a round build plate with 26 diameter. I only had to cut the the electronic box parts in half to print them but your ender 3 is also too small for them isn't it?

@@Tomtom5893 I understand, I broke the big elbow part during assembly ... but once everything is assembled, it's quite robust (despite the creaks). I didn't print the box for the electronic because I use DRV8825 drivers mounted directly on the RAMPS1.4

Yes I tried to use as much as possible the screws and bolts of the BOM but I had to adapt sometimes ;) where do you have trouble ?

@@aurelguest1 I have problems with the locknuts As they don't seem to fit. For example the M5 locknut of the rotary base (8 locknuts with 8 bearings) is bigger than the cutouts made for it. Do you have any advice? Any ideas would be greatly appreciated.

I don't remember exactly what I used, but I know you can use heat-set inserts. For the assembly I followed this guide but I had to change sometimes : www.instructables.com/Build-a-Giant-3D-Printed-Robot-Arm/

@@aurelguest1 I have a question regarding the printed parts, Did you print the official parts provided by bcn or did you print the modified ones in the previous link?

I printed the official parts ;) that's why I couldn't follow all the guide :)

Hi ! I use an Arduino Mega to control the robot :) I wrote my own program which is not optimized yet, and I use the AccelStepper library to control the motors.

@@aurelguest1 oh I see! So basically you are controlling it in Gcode?

Not exactly :) When I started, I used Pronterface software which is recommended by BCN3D guide, because the code was an adapted version of the Marlin firmware. So, we can use G-code to control the arm but it's not very convenient because it was designed for cartesian machines as 3D printers and not robotic arm (but it works). So I decided to write my own code to control the angle of each motors instead :)

@@aurelguest1 You wanna share that plz? Pronterface is so sad to control it^^ (mabey consider sell)

Hi :) I used only PLA (almost 2.5 kg with supports)

@@aurelguest1 Thanks, I'm going to start doing it, only 2.5 kg? Is it strong enough? What is the filling density of the structural parts?

​@@luislopezalegria820 Yes, it's not that much and it works well for me. I don't remember the print settings i used because I printed it in 2019 ^^ But it's maybe 20% infill.

@@aurelguest1 OK, thanks a lot. we look forward to new videos.

Yes, I think it would be better if you can machine aluminium ;) But we have to change the motors too because they are not very powerful (except for the base).

Theoretically yes, because I use the same components as a 3D printer. But I don't think it would be that precise ^^ I don't know Grasshopper but I want to use ROS to control the arm :)

I was working on recycling of plastic and I wondered about the project in this ua-cam.com/video/Vj_NGfoWRG0/v-deo.html

@@mark3dprinters150 Ok cool ! :) I don't think my robot arm is strong enough to do that, but it's an open-source project, you can improve it ;)