You can add 4 pics per post, just click the more attachments text for each pic you want to add.
I will do a quick vid and upload to youtube to let you see how the brain is working.
In the vid I will just emulate an input via my keyboard and set it up in the brain to do a feedhold if it is seen. I will then look at the feedhold LED in Mach and if it is seen then it will turn on an output, that output would work your panel LED.
Hood