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INMP441 MEMS omnidirectional microphone module
INMP441 MEMS omnidirectional microphone module with I²S digital output, low noise, and high sensitivity—ideal for ESP32, Raspberry Pi, and voice-enabled projects.
The INMP441 MEMS Omnidirectional Microphone Module is a high-performance digital microphone based on MEMS technology, designed for accurate and low-noise audio capture. It features an I²S digital output, eliminating the need for an external ADC and making it ideal for modern microcontroller and processor-based systems.
This microphone offers excellent sensitivity, low power consumption, and wide frequency response, ensuring clear voice and sound recording. The omnidirectional pickup pattern allows it to capture audio uniformly from all directions. It is fully compatible with ESP32, Raspberry Pi, Arduino (with I²S support), STM32, and other I²S-enabled platforms.
Common applications include voice recognition, smart assistants, IoT devices, audio recording systems, sound monitoring, and AI-based projects. Its compact size and digital output make it a reliable choice for professional and DIY audio applications.

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Text to Speech TTL Module (Serial to Speech)
- Single row 0.1″ header for easy connection to a host system
- Power requirements: +5 VDC
- 30 mA idle
- 46-220 mA active (depending on speech parameters and output load)
- Communication: Asynchronous 9600 bps serial (8N1)
- Dimensions: 1.25″x1.5″x0.37″
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Text support rate is better
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Interface operation is simpler
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5V single power supply.
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Output directly connected to the speaker, can drive 4 ohms 3W / 8 ohm 2W speakers
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Busy status output, can be connected to the microcontroller IO or indicator light, no need to be left floating.
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Voice effect optimization
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Module miniaturization and easy integration
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Dimension: 33*27.5mm
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With mounting holes

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