This week I build a DIY bluetooth 4.0 audio receiver. I used the CSR8635 bluetooth module, a recycled lithium battery cell that I got out of an old laptop, a TP4056 battery charging & protection IC and a DIY PCB I made myself.
Here are links to these items if you plan to build one yourself:
- CSR8635 Bluetooth 4.0 Stereo Module
- TP4056 Battery Charging and Protection Module
- 400mAh Lithium Polymer Battery
- MCP6272 op-amp
- 3.5mm Stereo Jack
- Generic ABS Plastic Enclosure
Or you can just buy a ready-made bluetooth receiver.