Description
Microphone Unit is a sound sensor with a built-in omni-directional electret microphone. The signal is amplified and output by microphone preamplifier max4466. The amplifier can effectively suppress power supply noise and common mode noise, and the output signal has high sound recovery and can be used in noisy environments. The unit can not only output analog signals, but also output digital level signals. The built-in LM393 double voltage comparator can set the comparison voltage threshold by adjusting 10K adjustable resistance. The sensor is very suitable for acoustic electrical conversion, audio recording / sampling, FFT acoustic feedback, voice switch and other projects.
Features
Audio record/sample
Built-in microphone preamplifier MAX4466
Omnidirectional, 52dB sensitivity
Digital output and analog signal
Built-in dual independent precision voltage comparator and adjustable resistor, threshold adjustable
Development platform:Arduin, UIFlow (Blocky, Python)
HY2.0-4P interface
2X LEGO compatible holes
Package Included
1x Microphone Unit
1x Grove Cable
Applications
FFT Spectrum Display
Audio Sample / Record
Voice Switch
Specification
Resources:Parameter
Microphone sensitivity / SNR:52dB/40dB
Output Signal:Analog / digital
Working Voltage:3.3V
Net weight:5g
Gross weight:16g
Product Size:32*24*8mm
Package Size:67*53*12mm
Datasheet
MAX4466
LM393
Schematic:click to open
Pin Map
M5Core(PORT B:GPIO26:GPIO36:5V:GND
Mic Unit:26:36:5V:GND
Example
1. Arduin IDE
To get complete code, please
Additional information
| Weight | 0.017 kg |
|---|
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