OpenPlotter - PyPilot - TinyPilot

[DoubleDutch]

you just need to click the enable hardware uart button in openplotter serial settings and reboot.

Thanks - found the button and yes that's a lot simpler but it still doesn't seem to work for me. So:

• Pressed UART button to disable bluetooth etc
  
• Rebooted RPi-4
  
• Voltage divider which now supplies 3.3v from Arduino TX to PI-10 (GPIO15)
  
• Direct connection between PI-8 (GPIO-14) and Arduino RX (so that's still 5v)
  
• Installed Arduino IDE on RPI, it sees the /dev/ttyACM0 Serial Port now but when trying to upload any sketch: I get 10 errors:
  

avrdude: stk500)getsync() attempt x of 10: into in sync: resp=0x34

I really am not sure what I'm doing wrong....

Does that matter that ttyACM0 shows up as a device in the OpenPlotter serial list? I guess not as when I delete it the Arduino IDE can't find the port anymore.

Thanks again for your help.