Bluetooth Relay ON/OFF Project 1.0

This project involves the development of an Android Bluetooth Remote Controlled Relay System using an 89c2051 Micro-controller and an HC-05 Bluetooth Module. The system enables users to remotely manage the operation of devices such as lights and fans through relay control.

For access to the circuit schematic and the hex file, they can be downloaded from this link.

Operational guidelines:

1. Ensure that your HC-05 Bluetooth Module is properly paired with your mobile device. The default pairing password is either "1234" or "0000." Further details can be found in the Bluetooth module manual.
2. Pressing the ON button triggers the transmission of the character "A" to the Bluetooth Module connected to the circuit. Upon receiving "A," the micro-controller activates the relay to switch on the connected device.
3. To switch off the device, press the OFF button which sends the character "a" to the Bluetooth Module. The micro-controller deactivates the relay upon detecting "a."
4. For voice command capability, click on the microphone icon and verbally say "ON" or "OFF" to control the device (requires a WiFi or Data connection).