Topic: send command to external device
Hello. Hope everyone is of good health..
I am trying to get something to work that I believe will work, but I haven't done before.
I want a button on the 180HD screen to send a simple 'power on' command to a projector, and another button to 'power off' the projector. I can do the buttons, but how to send the command eludes me, as well as where it transmits from.
Can someone point me in the right direction of this- do I use the 232 as an output? or the 422/485