I have a RepRap Prusa with Sanguinololu electronics. We have connected it all up and had it working previously but now it won't work. Pronterface cannot connect to the printer: its says 'connecting...' and then nothing or 'Can't read from Printer'. The printer makes a squeaky noise when we try to connect. We're stuck on what to do. Does anyone have any ideas??
Edited 1 time(s). Last edit at 05/14/2012 09:29AM by simonhoughton.
Since the machine whines when trying to connect you know you have the correct serial port. And since it is a Sanguinololu I would think it is an issue with trying to communicate at 250000 which does not seem to work well on them. I have to run my Sanguinololu at 115200. So my suggestion is change the firmware to use 115200, reload it and try connecting again at 115200.