M5Stack PDM microphone (U089) – digital MEMS microphone SPM1423

A digital microphone for sound-level measurement or voice control. With ESPHome it can measure the sound level in a room or serve as the microphone for your own voice assistant.

Works with

• ESPHome (i2s_audio, microphone with pdm: true)
• Arduino
• All ESP32 controllers with a Grove port

You also need

A controller with an ESP32-S3, for example the AtomS3 Lite. Grove cable included.

Specifications

• Microphone: Knowles SPM1423, PDM
• Signal-to-noise ratio: 61.4 dB
• Current: 600 µA
• Size: 24 × 24 × 13 mm

Manufacturer and documentation

Manufacturer: M5Stack Technology Co., Ltd, Block A10, Expo Bay South Coast, Fuhai Street, Bao'an District, Shenzhen, China, [email protected]. EU representative: Success Courier SL, Calle Rio Tormes 1, Planta 1, Derecha, Oficina 3, 28947 Fuenlabrada, Madrid, Spain, [email protected].

• Product documentation (M5Stack)
• Manufacturer certifications (CE/RoHS)

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