The Farmbot goes offline (on page my.farmbot.io) when Pi3 and Arduino connected by a USB cable.
Individually, both boards work normally, Pi3 goes online while haven’t connect to the Arduino, and Arduino success move steppers while haven’t connect to the Pi3 (I’m uploadable test sketch for the RAMPS, then I’m again upload firmware for Farmbot).
What could be the problem?
I’m tried different power supplies, USB cables, and Arduino MEGA2560 boards, nothing has changed.
Now Farmbot goes online (message “Farmbor is online and running” and “RoboFarm-APIK synced!” means that the device is online?), but no control commands for steppers does not work (the motor does not rotate).
I have also encountered the same situation, Manual control steppers via https://my.farmbot.io/app/controls, but X,Y,Z motor just Jitter…
Use Marlin code base to verify HW and it’s work.
check your jumpers for the endstops as seen on the picture below. I also had this issue and noticed that I unplugged those earlier. Maybe there was an update which made those necessary for movement.
The reason why you need the endstop jumpers is because the firmware has the endstops enabled by default. If you don’t actually have physical endstops hooked up to your RAMPS shield, then it is possible for the Arduino to think the endstops are being pressed when they’re not (because they don’t exist). This instructs the Arduino to not move any of the motors because it thinks it is at the end of the tracks or something. The fix is to add the jumpers so that the Arduino knows for sure that the non-existent endstops are not being pressed.