I don't think it really matters much, I just put a random shottkey diode I found in a drawer.

@joseph-puzzo Could it be upside-down? I finished my build awhile ago, can't remember exactly.

Did you put the 3D printed spacer on?

Does the output actually change? Can you measure 5V across the output pin? Are you using the most recent software versions? Do you have th...

@dedoky I have my robot on a 1 meter long track so I am trying to avoid any additional wires going up the arm that aren't going through the base box

@dedoky Interesting. Did you run the shielded cable all the way from the robot gripper back down to the main electronics housing? How long is y...

Yes. Before you power off its best to put the robot in the vertical rest position.

@cretan1987 Check the "Third party software" tab on this website and look at the ROS github. I'm not sure if it will run on a Pi but it might be yo...

Maybe with ROS on a Raspberry Pi (or similar) + Raspberry pi screen

I had some issues with the press fit connectors bought from aliexpress. After switching to the barbed style I have no more leaks.

The new V1.3 calibrated successfully for me. Thanks Chris.

Hello Olaf & Chris, I just finished building my arm and I get the same 'calibration failed' once I updated to AR4 HMI interface V1.2 Calib...