2/10/2023 0 Comments Esp8266 serial port arduino![]() Connect the TXD pin of the Arduino to the TX pin of the ESP (green color in the picture).Connect the RXD pin of the Arduino to the RX pin of the ESP8266 (yellow color in the picture).When you ground the reset pin, the Arduino works as a dumb USB to serial connector, which is what we want to talk to the ESP8266. Connect the RES or RESET pin to the blue line.If you want to connect other components that use 5V, you can connect the 5V output to the other red line of the breadboard, just make sure you don’t connect the two. The ESP8266 works with 3.3V and not 5V, so this is necessary. Connect the Arduino’s 3v3 (3.3V) output to the red line on a breadboard. ![]() First we will connect the Arduino UNO to a breadboard: This is written for the ESP8266-01 but you can find the pinout for other models easily and use the same pins. So I’m going to give you the quick version along with the details. ![]() There are a lot of guides online on how to connect an ESP8266 to an Arduino uno but there’s too much confusion and not enough explanation. ![]()
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