Arduino Environment and Esp8266

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Arduino IDE 1.6.x or newer is needed (I tried it on version 1.6.8).

  • Open the Arduino IDE and go to "File -> Preferences"

Esp8266 arduino 00.png

Esp8266 arduino 01.png

  • Then go to "Tools -> Boards -> Boards Manager" and in the box "Type" select “Contributed”. Select the “esp8266 by ESP8266 Community” package and click the “Install” button.

Esp8266 arduino 02.png

  • Now you can select the board for developing from "Tools -> Boards->ESP8266 Modules" and choose the board you want to program.

Esp8266 arduino 03.png

Test Programs


This example makes the led attached to pin 16 (D0 of the NodeMCU 1.0 board) blink and prints the number of iterations done in the serial terminal. For the pin mapping see NodeMCU#Pin_Mapping_for_Arduino_IDE

 1 int pin = 16; // D0 pin in NodeMCU
 2 int i = 0;
 4 // the setup function runs once when you press reset or power the board
 5 void setup() {
 6   Serial.begin(115200);
 8   // initialize digital pin 16 (D0) as an output.
 9   pinMode(pin, OUTPUT);
10 }
12 // the loop function runs over and over again forever
13 void loop() {
14   Serial.print("Line ");
15   Serial.println(i);
16   i++;
17   digitalWrite(pin, HIGH);   // turn the LED on (HIGH is the voltage level)
18   delay(100);              // wait for a second
19   digitalWrite(pin, LOW);    // turn the LED off by making the voltage LOW
20   delay(900);              // wait for a second
21 }

Connecting to Wifi Access Point