Recently I bought this wifi adapter for my IOT projects that I connected to my arduino uno that seems to not working. I have tried with the arduino ESP8266WiFi library with RX connected to pin 0 and TX connected to pin 1 I have also tried the softwareSerial and still the same result that is, in the serial monitor i always get "error" or I get nothing Thank you in advance and sorry if I made a mistake in the post, I am new to StackExchange :)

edit (added code to question):

#include <SoftwareSerial.h>

SoftwareSerial ESPSerial(10, 11); // RX, TX

void setup() {
  // Open serial communications
  // set the data rate for the SoftwareSerial port
  // if this doesnt work you for you then try different baud rate
  ESPSerial.println("Ready to take AT commands");

void loop() { // run over and over
  if (ESPSerial.available()) {
    // reads input from serial console and writes to esp8266
  if (Serial.available()) {
    // reads input from esp8266 and writes to serial console

Esp adapter


  • 1
    Please add your source code as text to your post and what is your expected output? Also please tell us for which board the shown code is. – Tarick Welling May 20 '19 at 11:29
  • did you set in Serial Monitor the line ends? – Juraj May 20 '19 at 17:54
  • 1
    @TarickWelling I am using arduino uno and I was expecting to enter some at commands. – NekoJustice May 21 '19 at 18:13

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