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Elecbee Microphone Unit LM393 Sound Sensor Built-In Omni-Directional Microphone Audio Sample/Record Voice Switch
SKU: EB0045968
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Key Features
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Description
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: Click to view
LM393: Click to view
Schematic:
Pin Map:
| M5Core(PORT B | GPIO26 | GPIO36 | 5V | GND |
| Mic Unit | 26 | 36 | 5V | GND |
Example:
1. Arduin IDE
To get complete code, please click here: https://github.com/m5stack/M5-ProductExampleCodes/tree/master/Unit/MIC_Unit
Shopping Guide
Shipping | Delivery Period | For in-stock parts, orders are estimated to ship out in 3 days. Elecbee ships orders once a day at about 5pm except Sunday. Once shipped, estimated delivery time depends on the below carriers you chose. DHL Express: 3-7 business days DHLeCommerce: 12-22 business days FedEx International Priority: 3-7 business days EMS: 10-15 business days Registered Air Mail: 15-30 business days | |
| Shipping Rates | Shipping rates for your order can be found in the shopping cart. | ||
| Shipping Options | Shipping rates for your order can be found in the shopping cart. | ||
| Shipping Tracking | We will notify you by email with tracking number once order is shipped. You can track your order using the “Track My Order” feature. | ||
| Returning/Warranty | Returning | Returns are normally accepted when completed within 30 days from date of shipment, please contact customer service for a return authorization. Parts should be unused and in original packaging. Customer has to take charge for the shipping | |
| Warranty | All Elecbee purchases come with a 30-day money-back return policy, plus 1-year Elecbee warranty against any manufacturing defects. | ||
| This warranty shall not apply to any item where defects have been caused by improper customer assembly failure by customer to follow instructions, product modification, negligent or improper operation | |||
| Ordering | How to Buy | Elecbee accepts online orders. | |
| Add to cart > Check out > Submit order > Complete payment > Delivery | |||
| Payment | PayPal, Credit Card includes Visa, Master, American Express, Bank transfer. | ||
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In-Stock:9987
Qty.
1
Unit Price
$ 6.79$ 7.99
Ext. Price
$ 6.79$ 7.99
$ 6.79$ 7.99
Can Ship in 1-3 Business Days