First off: Hardware Upgrades (well, electronics, but close enough)
|Added an e-stop button, wired in with the e-stop circuit|
|kludgy wiring for the e-stop switch :-) when the switch is pressed,|
the 5v power is tied to the signal input line via a 100k resistor.
|Also added a key switch that connects and disconnects the PS-ENABLE|
line on the power supply. no real point to it, but it's awesome!