Originally Posted by BobTopofTheWorld
OMG Slothy I do believe you have solved the issue.
Firstly, lads dont plug more than a LED sized load into this port, give me a tic to look at it and report how much current is available. (unless you got another rx board that you just gotta install)
Right away I didnt see the camera plug connected to the wee transistor, I will look into this for sure. Thinking a driver transistor (to isolate input and switch more current) and a piezo will solve this.
even if you just use the signal and ground pins and get your power source from somewhere else to allow a greater load, it will give a fairly simple method of adding the on/off functionality to the stock F45