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Sound Sensor

WAVESHARE Electronics Ltd.
Sound Sensor User Manual Waveshare Sound Sensor User Manual 1. Features Audio power amplifier LM386 (amplification factor chip of 200) Operating voltage 3.3V-5.3V Dimensions 39.0mm*21.0mm Fixing hole size 2.0mm Operating principle: LM386 is an audio power amplifier with features of low power consumption, adjustable voltage gain, wide voltage power supply, less requirements on peripheral compo...
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Sound Sensor User Manual Waveshare Sound Sensor User Manual 1. Features Audio power amplifier LM386 (amplification factor chip of 200) Operating voltage 3.3V-5.3V Dimensions 39.0mm*21.0mm Fixing hole size 2.0mm Operating principle: LM386 is an audio power amplifier with features of low power consumption, adjustable voltage gain, wide voltage power supply, less requirements on peripheral components and minimum total harmonic distortion. LM386 can be applied to the consumer products with low voltage requirement. To minimize the number of the peripheral components in used, the voltage gain should be set to 20. Connecting a resistant and a capacitor externally between the Pin1 and the Pin8, it is able to configure the voltage gain to any value within the range of 0-200. 2. Applications This module can be applied for detecting sound and judging audio intensity. 3. Interfaces Pin No. Symbol Descriptions 1 2 3 DOUT AOUT GND 4 VCC Digital output Analog output Power ground Positive power supply (3.3V-5.3V) 4. How to use We will illustrate the usage of the module with an example of sound detection by connecting a development board. ① Download the relative codes to the development board. ② Connect the development board to a PC via a serial wire and the module to the development board. Then, power up the development board and start the serial debugging software. Here is the configuration of the connection between the module and the development board. Port STM32 MUC pin DOUT AOUT GPIOA.4 GPIOA.6 1 PDF
Документация на Sound Sensor 

Дата модификации: 18.09.2014

Размер: 25.3 Кб

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