Hi man, I appreciate the help up until now. Finally I have assembled Nybble completely and also gotten around to set up the FTDI connector via raspberry's wifi. I can log in via ssh completely without problems. However, I don't know how to proceed from there. I have chmod +x 'd ardSerial.py but trying to send ./ardSerial.py kcr as you explained in your howto just throws me the following error: pi@nybble:~/Petoi/OpenCat/SerialMasterPython $ ./ardSerial.py kcr Traceback (most recent call last): File "./ardSerial.py", line 14, in <module> timeout=1 File "/usr/lib/python2.7/dist-packages/serial/serialutil.py", line 240, in __init__ self.open() File "/usr/lib/python2.7/dist-packages/serial/serialposix.py", line 272, in open self._reconfigure_port(force_update=True) File "/usr/lib/python2.7/dist-packages/serial/serialposix.py", line 326, in _reconfigure_port raise SerialException("Could not configure port: {}".format(msg)) serial.serialutil.SerialException: Could not configure port: (5, 'Input/output error') so probably what that means is that the port is not correctly set. How do I do that? Since it is not really documented I would love to have an explanation up until the point where I can sent complete sketches to Nybble. I am willing to help with cleaning it up afterwards so it is worth adding it to the official guide. Thanks for your help.

Hi man, when I try to compile the writeinstinct.h file via arduino IDE on Ubuntu 18 (either via root or as normal user) I get the following error: .../arduino-1.8.10/hardware/tools/avr/bin/avr-gcc: permission denied Tried already to google the problem, but nothing turned up really.