Hello, I am going to be sending power to some contact points on a 3ds system of mine. The end goal is being able to control some buttons with an Arduino UNO.
Obviously, the UNO uses 5 volt logic. The 3ds, however, uses 1.8 volt logic.
Does anyone have any suggestions on the best way to safely send 1.8 volt logic from the UNO to the system?
My first thought was a voltage divider, but I'm unsure if this is stable and I'm concerned with heat?