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Arduino Uno R4 WiFi comes with built-in Wi-Fi and Bluetooth capabilities, ... shared by the USB port and the RX/TX pins. ... The VRTC pin supports anything between 1.6V and 3.3V, ...
This example uses the 4D Systems uLCD-144(SGC) serial display module, wired as follows: uLCD Pin: RES GND RX TX VIN Arduino Pin: 2 GND ...
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