So what i don't want is... ether the board or Arduino to be lacking supply amperage or to provide to much voltage. Since the 24 and GND will be attached to a power source i do not have to worry about them. However the CW/CCW, ON/OFF, and LOCK pins which will be connected to the arduino should not exceed a supply voltage of 5 volts if they supply at all and demand more amperage then the arduino can supply (in order to prevent Arduino failure). I assume these pins are 5 volt activated. Would you happen to know the amperage rating for an Arduino Mega.