Features:
1. Efficient power amplification: It can provide 5W output power, suitable for driving small speakers or portable audio devices.
2. Easy to use: Supports 3.5mm audio input, supports TWS connection, and enhances the flexibility of use.
3. Low power design: The low power circuit design can maintain low energy consumption even when running for a long time.
4. Small size: The decoder board is compactly designed, which is easy to integrate into various audio systems or devices to save space.
5. Stability and compatibility: After rigorous testing, it ensures stable operation under various audio signal inputs.
Product Description:
After getting the Bluetooth board, refer to the wiring diagram below to solder the speaker and 3.7V lithium battery, and then check that the battery is not connected reversely. You can turn on the power test. Turn on the switch and the blue indicator light should light up. If it does not light up, you should quickly turn off the power to check whether the battery is installed correctly. When the indicator light is on and there is a ding-dong prompt sound, you can turn on the mobile phone Bluetooth to refresh the Bluetooth name, find “DAU Audio” to connect and play the music on the mobile phone.
Regarding TWS pairing, if you buy two DAU Audio Bluetooth modules, they can be paired in stereo. You need to turn off the Bluetooth of your mobile phone first, then turn on both boards at the same time, wait for a few seconds to hear the prompt tone, then the blue indicator light of one module is always on, and the indicator light of the other module is still flashing, indicating that the TWS pairing is successful. Then turn on the mobile phone to connect Bluetooth, and you will have a stereo wireless speaker. It is recommended to use a 500mAh-2000mAh capacity 3.7V lithium battery, and a 5V 1A-2A charger, and use a USB2.0 to Type-C cable for charging.
Product parameters:
Working voltage: DC3.5V-5V
Speaker: 2-4Ω (3W-10W), can connect one 2Ω speaker or two 4Ω speakers at the same time
Charger: 5V/1A is recommended
Charging interface: Type-c
Headphone jack: 3.5mm
Battery: 3.7V polymer lithium battery or 18650 lithium battery (customers need to prepare their own batteries)
Size: 28.5mm*17.3mm
Product list:
1X decoder board module
Note:
*The battery and speaker interfaces of this Bluetooth module are both solder pads, which need to be soldered when used. Please prepare soldering tools by yourself. Welding damage caused by personal reasons does not support return and refund.
The following situations cannot be used normally:
1. Type-C direct power supply cannot be used. The Type-C charging interface has power limit and is only provided for battery charging. If you want to use DC power supply, you need to solder it at the battery interface.
2. Directly connecting headphones to the 3.5mm headphone jack cannot be used. This interface is an audio wired input interface.
3.1.5V batteries and lithium batteries of too low quality cannot be used. The battery needs to be a 3.7V lithium battery with a protection board current of 4A (ampere) or more, otherwise the machine cannot be turned on or restarted at a high volume.
4. Do not pull the speaker wire and battery wire hard after welding, otherwise the welding pad will fall off and cannot be used.
