{"product_id":"max4466-microphone-amplifier-module-with-agc-for-arduino-projects","title":"MAX4466 Microphone Amplifier Module with AGC for Arduino Projects","description":"\u003ch1\u003eMAX4466 Electret Microphone Amplifier Module with AGC\u003c\/h1\u003e\n\n\u003cp class=\"product-lede\"\u003eThe MAX4466 module is a compact electret microphone amplifier with adjustable gain and built-in AGC, providing clean audio output for Arduino, ESP32, and other microcontroller projects.\u003c\/p\u003e\n\n\u003ch2\u003eKey Specifications\u003c\/h2\u003e\n\u003ctable class=\"specs-table\"\u003e\n  \u003ctbody\u003e\n    \u003ctr\u003e\n\u003ctd\u003eSupply Voltage\u003c\/td\u003e\n\u003ctd\u003e2.4 V to 5.5 V DC – Confirmed from manufacturer datasheet\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eGain Range\u003c\/td\u003e\n\u003ctd\u003e25× to 125× (adjustable via onboard trim pot) – Typical for this component category\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eOutput Type\u003c\/td\u003e\n\u003ctd\u003eAnalog, AC‑coupled – Confirmed from manufacturer datasheet\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eFrequency Response\u003c\/td\u003e\n\u003ctd\u003e20 Hz to 20 kHz – Typical for this component category\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eSignal‑to‑Noise Ratio\u003c\/td\u003e\n\u003ctd\u003e\u0026gt;60 dB (A‑weighted) – Typical for this component category\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eOnboard Microphone\u003c\/td\u003e\n\u003ctd\u003eElectret condenser, omnidirectional – Confirmed from manufacturer datasheet\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eModule Dimensions\u003c\/td\u003e\n\u003ctd\u003e22 mm × 14 mm (approx) – From user reports and common usage\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eCurrent Consumption\u003c\/td\u003e\n\u003ctd\u003e\u0026lt;3 mA – Inferred from similar module designs\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch2\u003eWhat You Can Build With This\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/kit-sound-activated-led-kit\"\u003e\n\u003cstrong\u003eSound‑activated LED:\u003c\/strong\u003e Create a beginner‑friendly Arduino project that lights up LEDs when you clap or speak.\u003c\/a\u003e\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWi‑Fi noise monitor:\u003c\/strong\u003e Use an ESP32 to stream live sound levels to a Blynk dashboard for smart room monitoring.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eAudio visualizer:\u003c\/strong\u003e Connect to a Raspberry Pi (with external ADC) and run a Python script to plot real‑time waveforms.\u003c\/li\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/clap-switch-kit-with-arduino-uno-learn-pattern-detection-and-debounce\"\u003e\n\u003cstrong\u003eClap switch (CBSE Class 11‑12):\u003c\/strong\u003e Build a practical physics investigation demonstrating sound‑triggered circuits, perfect for ATL Tinkering Labs.\u003c\/a\u003e\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSmart India Hackathon project:\u003c\/strong\u003e Integrate into an assistive device that recognizes alarm sounds for hearing‑impaired individuals.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eCompatibility\u003c\/h2\u003e\n\u003ctable class=\"compat-table\"\u003e\n  \u003cthead\u003e\u003ctr\u003e\n\u003cth\u003ePlatform\u003c\/th\u003e\n\u003cth\u003eCompatible\u003c\/th\u003e\n\u003cth\u003eConnection\u003c\/th\u003e\n\u003cth\u003eLibrary \/ Method\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n  \u003ctbody\u003e\n    \u003ctr\u003e\n\u003ctd\u003eArduino Uno R3\u003c\/td\u003e\n\u003ctd\u003eYes\u003c\/td\u003e\n\u003ctd\u003eOUT → A0\u003c\/td\u003e\n\u003ctd\u003eanalogRead()\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eArduino Nano\u003c\/td\u003e\n\u003ctd\u003eYes\u003c\/td\u003e\n\u003ctd\u003eOUT → A0\u003c\/td\u003e\n\u003ctd\u003eanalogRead()\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eArduino Mega 2560\u003c\/td\u003e\n\u003ctd\u003eYes\u003c\/td\u003e\n\u003ctd\u003eOUT → A0\u003c\/td\u003e\n\u003ctd\u003eanalogRead()\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eESP8266 NodeMCU\u003c\/td\u003e\n\u003ctd\u003eYes with condition\u003c\/td\u003e\n\u003ctd\u003eOUT → A0 (0‑1 V input)\u003c\/td\u003e\n\u003ctd\u003eanalogRead(); may need voltage divider\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eESP32 Dev Board\u003c\/td\u003e\n\u003ctd\u003eYes\u003c\/td\u003e\n\u003ctd\u003eOUT → any ADC pin (e.g., 34)\u003c\/td\u003e\n\u003ctd\u003eanalogRead()\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eRaspberry Pi Pico\u003c\/td\u003e\n\u003ctd\u003eYes\u003c\/td\u003e\n\u003ctd\u003eOUT → GP26 (ADC0)\u003c\/td\u003e\n\u003ctd\u003eMicroPython ADC\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eRaspberry Pi 4 \/ 5\u003c\/td\u003e\n\u003ctd\u003eNo\u003c\/td\u003e\n\u003ctd\u003eN\/A\u003c\/td\u003e\n\u003ctd\u003eRequires external ADC (e.g., MCP3008)\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch2\u003eWiring and Interface Notes\u003c\/h2\u003e\n\u003cp\u003eConnect VCC to a 3.3 V or 5 V supply, GND to ground, and OUT to the analog input of your microcontroller. The onboard trim potentiometer lets you adjust gain from 25× to 125× — turn clockwise to increase sensitivity. For best results, keep wires short and use the onboard voltage regulator to avoid power‑supply noise in your audio signal.\u003c\/p\u003e\n\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cdiv class=\"faq\"\u003e\n  \u003cdiv class=\"faq-item\"\u003e\n    \u003ch3\u003eMy MAX4466 output seems noisy, how do I fix it?\u003c\/h3\u003e\n    \u003cp\u003eEnsure a clean power supply and use short, shielded cables. Adjust the gain trim pot to avoid clipping and keep the module away from noisy components like motors.\u003c\/p\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"faq-item\"\u003e\n    \u003ch3\u003eCan I use this module for voice recognition with Raspberry Pi?\u003c\/h3\u003e\n    \u003cp\u003eYes, but you’ll need a USB sound card or an external ADC since the Raspberry Pi lacks analog inputs. The module provides good analog output for sampling.\u003c\/p\u003e\n  \u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cscript type=\"application\/ld+json\"\u003e\n{\n  \"@context\": \"https:\/\/schema.org\",\n  \"@graph\": [\n    {\n      \"@type\": \"Product\",\n      \"@id\": \"https:\/\/compoden.in\/products\/max4466-microphone-amplifier-module-with-agc-for-arduino-projects#product\",\n      \"name\": \"MAX4466 Electret Microphone Amplifier Module with AGC\",\n      \"description\": \"MAX4466 electret mic amp module with AGC for Arduino, ESP32, Raspberry Pi audio projects. Low noise, adjustable gain. 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