This repository contains a simple Android app which talks to a home built BlueTooth device which in turn controls two 5v relays. This device is running a custom firmware. The idea is quite similar to this one, but has a somewhat different protocol and goal. On startup this application performs initial connection with the device. Relays are turned on/off whenver the user clicks on volume up/down buttons on the phone. This device and the program were specifically designed as a remote control for the standing desk in the office.
AT commands used by this app:
- AT+DIR=XXXX -- set direction of GPIO ports
- AT+PIN=XXXX -- set output value of GPIO ports
XXXX here is a decimal number representing the bits state.