Overview

The Analog Test Board is an accessory board includes an onboard Audio Power Amplifier LM386M, and two high-precision adjustable resistor used for adjusting input voltage level (0-3.3V, 2 channel), and a speaker for indicating the output voltage level by sound volume (1 channel).

The board is ideal for testing AD/DA function that integrated in the MCUs, it also supports MP3 output, music playing, etc.

Features

LM386M, speaker, high-precision adjustable resistor × 2, analog input/output

Photos

Downloads

Development resources: demo codes, schematic, datasheets, etc.
Wiki: www.waveshare.com/wiki/Analog_Test_Board