MAX9812L Electret Microphone Module

Description

What it is

The MAX9812L microphone module is an electret amplifier with voice detector designed to be used with programming boards such as Arduino. It improves the quality of recorded audio by amplifying sounds captured by the integrated microphone.

Features

• Electret amplifier with voice detector
• SKU: ARD009388
• Price: 2.83 €
• Category: Audio / Voice / MP3, Shield and Modules

What it is for

The MAX9812L module is ideal for audio and voice recording projects. You can use it to create a simple voice recorder by connecting the microphone to the module and then the module to the Arduino. The source code can be used to record sounds on a serial port.

Tutorial: How to use MAX9812L

The MAX9812L microphone amplifies and records sounds. Useful for audio and voice recording projects.

What you need

• MAX9812L
• Arduino
• 10kΩ resistor
• Audio cable
• Arduino microcontroller

Steps

1. Connect the MAX9812L to the Arduino via the VCC and GND pins.
2. Connect the 10kΩ resistor between VCC and GND.
3. Connect the microphone to the MIC pin of the MAX9812L.
4. Connect the OUT pin to the A0 pin of the Arduino.
5. Download the source code.
6. Upload the code to the Arduino.
7. Check the datasheet for the sampling frequency.
8. Test the audio with an audio player.

Example code

void setup() {  Serial.begin(9600);}void loop() {  int soundLevel = analogRead(A0);  Serial.println(soundLevel);}

Mini project

Create a simple voice recorder. Connect the microphone to the MAX9812L and the MAX9812L to the Arduino. Use the source code to record sounds on a serial port.

Common mistakes

• Audio loss: check the resistance and connections.
• Distorted audio: check the sampling frequency.
• No audio: check connectivity and polarity.
• Power supply issues: check the power supply current.

Recommended accessories

• Arduino Uno
• ESP32 Microcontroller
• Condenser Microphone
• 3.5mm Audio Cable

Frequently asked questions

Which pins of the MAX9812L should I use?
Use the pins VCC, GND, MIC and OUT.

Does the MAX9812L work with Arduino?
Yes, but make sure the power supply is compatible.

Can I use a microcontroller other than Arduino?
Yes, but check for compatibility and power supply.

Does the MAX9812L work with batteries?
Check the datasheet for the power supply voltage.