This small breakout board combines Bluetooth reception with a digital 15W stereo amplifier and can be used to power a bluetooth sound box.
Technical Data
| Item | Description |
|---|---|
| Power Supply | 8-24V |
| Speaker Impedance | 4-16 Ohm |
| Amplifier | 10W/15W/20W models available |
| Chip | TPA3110 from Texas Instruments |
| Bluetooth Distance | <15 Meter |
| Chip | AC23C0 from JL (Zuhai Jie Li) |
| Size | 50x33x12mm |
The amplifier power depends both on supplied input voltage and speaker impedance:
| Speaker Impedance (Ohms) | Supply Voltage (V) | Power |
|---|---|---|
| 4 | 12 | 2x16W |
| 8 | 12 | 2x10W |
| 4 | 16V | 2x15W |
| 4 | 20V | 2x20W |
| 4 | 24V | 2x30W |
At output levels of >20W, additional heat sinks must be added.
Power Supply
Due to its amplifier power, the board cannot be directly powered by USB. It requires a voltage in the range of 8-24V. Input voltages >26V will destroy the audio amplifier.
Make sure your power supply is capable of driving the board. It should at least be able to provide 30W.
Speaker
Two speakers can be connected to screw terminals. There is no headphone jack as this is a powerful amplifier board designed for external speakers only.
Due to the relatively high amplifier output, make sure you connect speakers capable of delivering the audio, or keep the volume low.
Bluetooth Connectivity
After power on, the board is in bluetooth pairing mode and visible for bluetooth devices such as your smartphone. The board is advertised as XY-P15W.
There is no pairing code or button press required for pairing. Once paired, the paired device can play music through the amplifier.
All Bluetooth functionality is provided by a AC… chip manufactured by Zuhai Jie Li. This company produces cheap chips for a wide variety of consumer products.
Operation
A half-round operation wheel controls volume and pause/play:
- Volume: turn the half-wheel to the right or left to control volume.
- Play/Pause: press the half-wheel to toggle between play and pause.
The screw terminals are labeled on the backside:
Data Sheets
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(content created Apr 08, 2024 - last updated Apr 13, 2024)