The pinout pdf here is incorrect. According to the Arduino Due Eagle files, the pins are flipped. The first pin should be on the other side. This matches with the physical board which has the white ...

The arduino R3 pinout includes an IORef pin which will be 5v on a 5v arduino but 3.3v on a 3.3v arduino. Any IC’s on the shield should run at IORef. Report comment. Reply. F says: ...

CGA monitors may not be an amazing technological advance these days, but they can generally be found very cheaply. Additionally, they have a DB-9 connector and work off of TTL ranges (0-5VDC) makin… ...