Hardware Device: 1. Arduino/ any DIY board. 2. HC-05/HC-06. 3. Relays. Software: 1. Arduino IDE. 2. BlueHome. Commands: 1 - Turn on A. 2 - Turn off A. 3 - Turn on B. 4 - Turn off B. 5 - Turn on C. 6 - Turn off C. 7 - Turn on D. 8 - Turn off D. For full code and tutorial check www. ebots. ml.