Modifying an Arduino Mega and chipKIT Max32 for 5V Operation - EE Times

Modifying an Arduino Mega and chipKIT Max32 for 5V Operation EE Times Now, the Arduino Mega and the chipKIT Max 32 both require an external supply of between 7V and 12V. When this supply is fed into the board, it is first regulated down to give a constant 5V supply and then regulated down again to provide a 3.3V supply.