I have been updating the schematic over the last 24 hours as many of you have sent in bug reports. For instance, there was a missing cap on Q14 that I added recently. There were mistakes in the pin out of the arduino chip as well. so, if you had taken a print previously, maybe you should take another one now. If you download the arduino code from github, you will get a text file as well, that keeps the correct pin out. I use that file to hook up arduinos. - f