I have a Lilypad that is hooked up to a FTDI Serial/USB device. The FTDI provides 3.3 volts (hard wired) to the Lilypad when it is hooked up. The Lilypad will wind up in a circuit that provides regulated 5v power (to both the Lilypad and other circuitry).
When I am testing the Lilypad software while connected to the FTDI, do I need to disconnect the 5V power input into the Lilypad? It would seem the 5V would conflict with the 3.3V from the FTDI and possibly damage it. I couldn't find any documentation that specified one way ore the other.
Thanks