Description
What it is
The XS9871 is a mini digital class AB power amplifier module, designed to amplify sound up to 5W. It is an ideal component for small-scale electronic audio projects, such as home sound systems or custom speakers.
Features
- Class AB digital power amplifier module
- Output power mono: 5W
- Power supply: 5V
- SKU: ARD0011961
- Price: 1.91 €
What it is for
This power amplifier module is perfect for small-scale audio projects. You can connect it to an Arduino and a small speaker to create a small sound system. You can also add simple source code to send audio signals. It is ideal for projects such as home sound systems, custom speakers, or portable audio applications.
Tutorial: How to use XS9871 mini class AB module
This power amplifier module is ideal for small audio projects such as home sound systems or custom speakers.
What you need
- XS9871 mini AB class module
- Arduino Uno or compatible
- 10kΩ resistor for the reset pin
- 8Ω speakers
Steps
- 1. Connect the 10kΩ resistor between the Arduino reset pin and GND.
- 2. Connect the VCC of the module to the 5V of the Arduino.
- 3. Connect the GND of the module to the GND of the Arduino.
- 4. Connect the audio signal to the input pin of the module.
- 5. Connect an 8Ω speaker to the output terminal of the module.
- 6. Upload the source code to the Arduino.
- 7. Check that the module correctly amplifies the audio signal.
- 8. Refer to the datasheet for further details.
Example code
void loop() {}
Mini project
Create a small sound system by connecting the module to an Arduino and a small speaker. Add a simple source code to send audio signals.
Common mistakes
- Do not connect the module correctly to the Arduino.
- Use speakers with resistance different from 8Ω.
- Omit the reset resistor.
- Do not check the specifications on the datasheet.
Recommended accessories
- 8Ω speaker
- Audio cable
- 10kΩ resistor
- Microphone for audio input
Frequently asked questions
What are the specifications of the module?
Check on the datasheet.
Can I use another type of Arduino?
Yes, the module is compatible with Arduino Uno or compatible.
How much power can the module produce?
The module can produce up to 5W.
What should I do if the module does not amplify the signal?
Check the connections and audio signal. Check the datasheet for further details.






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