MyCobot 280 Robotic Arm - Elephant Robotics

[burnt pine]

Hi,

Has anyone used one of these robot arms or is there a similar enough build for it?

Regards.

[zinc hawk]

Hello @burnt pine 👋 I actually started building out a module for this exact arm, this MyCobot 280 Pi. https://github.com/HipsterBrown/viam-mycobot

I need to publish my latest updates, but the module currently supports controlling the gripper and setting the joint angles. I was adding the move to position support but one of the joint servos burnt out and I’m in the middle of fixing it.

What kind of project did you have in mind for it?

[burnt pine]

Hi @zinc hawk. Yes, move to position and also back-drivability.

[zinc hawk]

Back drive is an interesting feature that is technically possible since the joint angles can be read correctly after moving them manually, but that’s not something strictly supported by Viam arm API at the moment. You would need to continually read the joint angles from the API for your use case.

I’ll let you know when I publish the latest version.

[burnt pine]

Hi, should my setup look something like this?

[zinc hawk]

The components look correct to me. What errors do you see in the Logs tab?

[burnt pine]

5/15/2025, 9:25:50 PM error rdk.resource_manager.rdk:component:board/Rpi4_in_the_MyCobot   resource/graph_node.go:297   resource build error: unknown resource type: API "rdk:component:board" with model "viam:raspberry-pi:rpi4" not registered   resource rdk:component:board/Rpi4_in_the_MyCobot  model viam:raspberry-pi:rpi4

[zinc hawk]

Looks like RPi 4 board module is having issues starting. Can you share more of the Logs or look for a more specific error?

[burnt pine]

Can I copy and paste in a config you have already made for this if there is one?