While you can use a Uno with a Nextion my advice is don't as it has only one serial port, which is used by the serial monitor. Use a board with at least 1 spare serial port, for example Mega or Nano Every.
While you can use a Uno with a Nextion my advice is don't as it has only one serial port, which is used by the serial monitor. Use a board with at least 1 spare serial port, for example Mega or Nano Every.