How to break out an extra serial port on 4.2.7 board?
Hi I would like to add a touchscreen to my Ender 3 pro. I installed a 4.2.7 board thinking this is the best course towards my goal. Of course I didn’t read enough info and found that I need a serial port for the touch features to work. Duh! I’m wondering if anyone could point to a way of breaking out a serial port from the existing board? Thank you for your hard work and time.