Last Updated on January 7, 2022 by technoreview85
It is a very easy & simple project. You can convert your old wired headphone to wireless Bluetooth headphones. It produces good quality stereo sound.
![DIY Bluetooth headphone](https://technoreview85.com/wp-content/uploads/2022/01/IMG_20220106_200153-min.jpg)
You can connect it to any smartphone, laptop or computer via Bluetooth & can listen to audio from a connected device.
So it is a very good system to convert your old wired headphone or earphone to wireless Bluetooth headphones.
You need to make
- A small plastic container
- Any earphone or headphone
- Stereo EP socket.
- Tp4056 charging module.
- Small on/off switch.
- Small 3.7 volt battery
- Bluetooth Audio receiver module
![Bluetooth audio module](https://technoreview85.com/wp-content/uploads/2022/01/Bluetooth-audio-module-min.jpg)
How it works
The main component of this project is the Bluetooth Audio Receiver module. You can connect it to your smartphone.
After it is successfully connected to a smartphone you can hear smartphone audio from the L & R output pin of the Bluetooth module by using a headphone. ( Follow circuit diagram)
The charging module for charging the battery.
Connection
Its connection is very easy
![DIY Bluetooth headphone circuit](https://technoreview85.com/wp-content/uploads/2022/01/bluetooth-circuit-copy-min.jpg)
Bluetooth audio receiver module’s VCC & GND is connected to the battery positive and negative.
![Bluetooth audio receiver module](https://technoreview85.com/wp-content/uploads/2022/01/Bluetooth-audio-receiver-module-min.jpg)
Bluetooth audio receiver module’s L,R out & GND is connected to Stereo Ep socket.
![stereo EP socket](https://technoreview85.com/wp-content/uploads/2022/01/stereo-EP-socket-min.jpg)
Charging
You can charge it using any smartphone charger with a micro USB.
![3.7v battery](https://technoreview85.com/wp-content/uploads/2022/01/3.7v-battery-min.jpg)
![TP4056](https://technoreview85.com/wp-content/uploads/2022/01/TP4056-min.jpg)
Connect with smartphone
You have to connect it to your smartphone via Bluetooth
![Bluetooth connected](https://technoreview85.com/wp-content/uploads/2022/01/IMG_20220106_195911-min-min.jpg)
Project Video
For more details please watch the project video.