Equipped with a microphone, integrated audio signal amplifier (LM386), trimmer for sensitivity adjustment, analog and digital output, LED indicator of the output signal, this module allows to detect the intensity of the sound in the surrounding environment. It can be used as a sound-activated switch, to be inserted into a robot that moves to the rhythm of the music, etc.

• Microphone sensitivity: 52dB
• Frequency range: 50 Hz to 20 kHz
• Audio signal gain: up to 200
• Power supply: from 3.3 Vdc to 5.3 Vdc

• Code and Schematic