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Home > Electronics Tutorials > Electronics Engineering Hobby Projects > Bluetooth Device Control > 89c2051 Microcontroller and HC-05 Bluetooth Android Project
Android Controlled Projects
using 8051 Micro-controller and Bluetooth

Simple Android Bluetooth Remote Controlled Relay Project using 89c2051 Microcontroller
and HC-05 Bluetooth Module

Here is a simple project to turn ON/OFF relay using Bluetooth Module HC-05 & 89c2051 Microcontroller with your Android mobile device.

Circuit Diagram of Android Controlled Relay using 892051 and HC-05 Bluetooth Module

Circuit Diagram of Android Controlled Relay using 892051 and HC-05 Bluetooth Module

Download HEX File
(To save on your PC, right click on file choose "Save link as...")

HC-05 Bluetooth Module

For more detail on HC-05 Bluetooth module click here
 

 

You can install FREE App on Google Play or can download by clicking on direct link here.

App Instructions:

1. First make sure your HC-05 Bluetooth Module is paired with your mobile. The default password for pairing is "1234" or "0000". Check the manual of Bluetooth module.

2. Click on Select Device to select paired Bluetooth module.

3. When you press ON button  it sends the data "A" to Bluetooth Module connected with a circuit. Microcontroller turns ON the relay when it detects "A"

4. When you press OFF button  it sends the data "a" to Bluetooth Module connected with a circuit. Microcontroller turns OFF the relay when it detects "a".

5. You can also click on Mic. icon and speak "ON" or "OFF" to turn ON/OFF device (it needs WIFI or Data Connection).

6. Click on Disconnect to disconnect paired Bluetooth module.

 


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