[Arduino Enigma] recently posted a tutorial on how to design custom PCB shapes for Fritzing. Yes, Fritzing is no longer limited to rectangular PCBs with sharp corners. You can make PCBs in any ...

After sending off the design ... Arduino world; the segments need +1.5 volts with reference to the common connection to turn on, and -1.5 volts to turn off. His clever solution is to use an ...