Trigger interface I'm designing to insert a Bluetooth receiver between the CD player and stereo in my Subaru. The stereo expects a 12v trigger to play audio from the line in. The CD outputs this trigger (the 12v switch) while playing. My Bluetooth circuit outputs a 3.3v trigger (the 3.3v switch). I needed an OR gate that would accept either a 3.3v or 12v input and output 12v.
Updated to simplify. I had converted the 3.3v to 12v, but realized that was unnecessary since the MOSFET will still trigger off of 3.3v in this configuration.
