Standalone ESP8266/ESP-12, read GPIO with pull-up resistor.

This example set GPIO12 as input with pull-up resistor. Turn ON/OFF on-board LED according to GPIO12 input.

/*
 ESP8266 Read input from GPIO12, write to on-board LED
*/

int pin_Button = 12;  //GPIO12 

void setup() {

  pinMode(BUILTIN_LED, OUTPUT);
  pinMode(pin_Button, INPUT_PULLUP);
}

void loop() {

  if(digitalRead(pin_Button)){
    digitalWrite(BUILTIN_LED, LOW);   //LED ON
  }else{
    digitalWrite(BUILTIN_LED, HIGH);  //LED OFF
  }

}

Test HM-10 and AT-09, Bluetooth 4.0 Module, with Android

Test HM-10 and AT-09 Bluetooth 4.0 Module with Android BluetoothLeGatt sample project, posted on my another blogspot android-er.

- Step-by-step how to modify BluetoothLeGatt sample to Connect HM-10 (BLE Module) to Android device.

- Modified BluetoothLeGatt sample connect AT-09 (Bluetooth LE Module)


- Implement dummy Heart Rate Measurement profile using Arduino Due + HM-10, for BluetoothLeGatt sample code

- Android send data to Bluetooth LE device, using HM-10 BLE Module

4-wheel Robot Smart Car

My 4-wheel Robot Smart Car :)