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Drawing with feltPen via ZeroMQ API

Posted: 01 Dec 2025, 08:49
by dat.nguyen500
I want to draw using FeltPen through the remote API of CoppeliaSim, but I am not sure how to make it work. I have extracted the robot coordinates from a DXF file and used simIK to move the tip of the feltPen to the desired coordinates. However, it seems that nothing is being drawn on the cuboid.

How can I correctly draw on the cuboid using the FeltPen in CoppeliaSim? Here is my project folder (Python code + scene + DXF): Link. I have a main script called test_1.py, and other files contain the necessary functions to run test_1.py.

Re: Drawing with feltPen via ZeroMQ API

Posted: 02 Dec 2025, 06:52
by coppelia
Hello,

you say that nothing is being drawn on the cuboid.
  • Can you draw onto e.g. the floor?
  • Is the pen tip touching the cuboid?
  • Is the cuboid detectable? (remember that the felt pen is using a proximity sensor to detect surfaces to draw onto)
Cheers

Re: Drawing with feltPen via ZeroMQ API

Posted: 02 Dec 2025, 17:39
by dat.nguyen500
Thank you! I enabled the detectable property of the cuboid and it worked!