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How to break out an extra serial port on 4.2.7 board?

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Joined: 5 months ago
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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.

This topic was modified 4 months ago by Jmartens2