The ESP8266 microcontroller is a favorite among makers for creating affordable, Wi-Fi-enabled sensor projects. Pairing it with a DHT22 temperature and humidity sensor is one of the easiest ways to get ...
void setup() { // Start Serial2 at 4800 baud // RX = 16, TX = 17 Serial2.begin(4800, SERIAL_8N1, 16, 17); } Serial2.begin(...): initializes secondary serial ...
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