Are there unused data pins on the silent mainboard?
I am trying to make a messaging system for my ender 5 plus. so it sends a text to my phone when a print is ready. I saw a video on youtube of a Prusa printer having an extra unused data pin where you could send data over. I'm trying to find the same kind of pin on my ender 5 plus with a silent board. Does anyone know If my idea is even possible?