AM-008 NS8002 Audio Amplifier Expansion Board – Compatible with Arduino, Micro:bit, BEC, Headphone Playback (3W Speaker Module)

SKU: FA1083
Operating Voltage

DC 2.0V – 5.5V

Amplifier IC

NS8002 Bridge Audio Power Amplifier

Output Power

Up to 3W (at 5V supply, 4Ω load)

Output Impedance

4 ohms – 8 ohms

Frequency Response

150Hz – 20KHz

Dimensions

Approx. 44mm x 37mm

Mounting Hole Diameter

3.2mm

Connectivity

3-Pin Header, Alligator Clip pads, 3.5mm Audio Jack

The AM-008 NS8002 Audio Amplifier Expansion Board transforms development boards like the micro:bit and Arduino into versatile music players by adding a 3W speaker module, volume control, and a headphone jack. This compact and efficient board is suitable for both individual users and business purchasing.
Long Description
The AM-008 NS8002 Audio Amplifier Expansion Board is a compact yet powerful solution for adding high-quality audio output to your electronic projects. Designed to be compatible with a wide range of development platforms, including the BBC micro:bit and various Arduino boards (supporting both 3.3V and 5V logic levels), this module is ideal for applications in STEM education, DIY audio projects, and rapid prototyping.
At its core, the board utilizes the high-fidelity NS8002 bridge audio power amplifier chip, which provides stable and efficient power output of up to 3W. This eliminates the need for bulky output coupling capacitors or complex snubber networks, simplifying your circuit design. Key features include a convenient volume adjustment knob for precise sound control, a 3.5mm headphone jack for private listening, and a switch to select the output device. The board operates on a wide voltage range (2.0V to 5.5V), making it highly versatile for various power sources, including standard 3.7V lithium batteries.

Key Features
  • High-Fidelity Audio: Onboard NS8002 power amplifier chip delivers clear, amplified sound.
  • Volume Control: Features an analog potentiometer knob for smooth and precise volume adjustment.
  • Headphone Output: Includes a standard 3.5mm jack for connecting headphones or external speakers.
  • Versatile Compatibility: Works seamlessly with 3.3V and 5V microcontrollers like the micro:bit and Arduino.
  • Simple Interface: Designed with clear pin descriptions (3V3, GND, Signal) and options for connection via crocodile clips or PH2.0 wires.
  • Efficient Power Management: Wide operating voltage range of 2.0V to 5.5V, optimized for portable, low-power applications.
Usage Instructions
  1. Connection: Connect the board to your development platform (micro:bit or Arduino) using the provided cables. Ensure the Signal pin receives the audio output from your microcontroller, 3V3/VCC receives power (within the 2.0V-5.5V range), and GND is grounded.
  2. Powering: The board operates off the power supplied by the development board or an external source connected to the VCC/GND pins.
  3. Volume Adjustment: Turn the onboard potentiometer knob clockwise to increase the volume and counter-clockwise to decrease it.
  4. Output Selection: If applicable, use the onboard switch to direct the audio output to either the integrated speaker or the 3.5mm headphone jack.
  5. Programming: For micro:bit, use the music blocks in MakeCode or relevant Python libraries. For Arduino, use tone() functions or audio libraries to generate the signal input.
Q: Does this product come with development resources or tutorials?

Yes, the manufacturer provides a complete supporting manual with graphical routines for micro:bit, Python examples, and Arduino routines to help you get started quickly.

Q: Can I use this with a 5V Arduino board?

Yes, the board is compatible with both 3.3V and 5V Arduino development boards, thanks to its wide operating voltage range.

Q: Is the speaker included with the expansion board?

Yes, the expansion board comes with an integrated speaker module

Q: How do I get the maximum 3W output?

According to NS8002 datasheets, the typical 3W output is achieved when the board is powered by a 5V supply and connected to a 4-ohm impedance speaker.

Q: Is this product suitable for business and educational bulk purchases?

Yes, its robust design, safety features (integrated amplifier protection), and comprehensive resources make it highly suitable for STEM education and business prototyping projects. Please contact our sales team for bulk pricing options.