@Paul-Cousins said in Nextion NX3224T024 - Generic 2.4'' TFT Intelligent LCD Touch Display: @Edwin-Ascencio It doesn't look like have any level shifting circuitry on the serial tx/rx so the 3.3v from omega might not be high enough to drive the 5V uart on screen. You are also feeding back 5V into the omega via the rx pin so could possibly do some damage over time. OP's circuit is OK - level shifting is not needed between Omega2(+)'s serial port and Nextion NX3224T024 - Generic 2.4'' TFT Intelligent LCD Touch Display. See also NX3224T024_011 datasheet.