Hello, World!

Every new thingsSDK project starts with a Hello, World! example. The "Hello, World!" of electronics is a blinking LED (light).

Each ESP8266 has a blue LED that's connected to a the D2 pin. Pins can be programatically triggered. In this example the digitalWrite function gets called which will either switch the LED on or off.

The following code will switch the LED off and on every 0.5 seconds.

var isOn = false;
var interval = 500; // 500 milliseconds = 0.5 seconds

function main() {
  setInterval(() => {
      isOn = !isOn; // Flips the state on or off
      digitalWrite(D2, isOn); // D2 is the blue LED on the ESP8266 boards
  }, interval);
}