if in range the LED will automatically turn on, and if out of reach the LED will automatically turn OFF by utilizing the HC05 module’s automatic connection function with a smartphone. Reply saua Is possible that the arduino sent the data permanent to phone? like this: int LEDState; ...
// Basic bluetooth test sketch. HC-0x_FC-114_01_9600// Uses hardware serial to talk to the host computer and software serial for communication with the bluetooth module/// Pins// BT VCC to Arduino 5V out.// BT GND to GND// Arduino D3 to BT RX through a voltage divider// Arduin...