Measure rotation speed (RPM) with Optocoupler and Encoder disk and Arduino - Quick and Easy!
by Boian Mitov
Full instructions explaining how to create a digital compass using a 3.5 inch Nextion LCD and a QMC5883L compass module for the Arduino Uno.
Project tutorial by mariogianota
You can communicate your Nextion LCD with your Arduino UNO by Software serial ... a liitle tricky but not much :)
by Tamer Savaşcı
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