I need to control a BrightSign HD224 with a simple button. The button like this:
https://www.digiverse.co.uk/product/illuminated-vandal-proof-steel-push-button-2-metre-lead/
It just needs to start a video. I know this is via the GPIO but don't know how to wire it or program the player. Is there any service or engineer nr London that could provide this?