ESP32 audio kit with INMP441 microphone, white OLED display, 400-point breadboard and jumper wire set.

ESP32 INMP441 I2S Microphone & OLED Display Kit

Name: ESP32 INMP441 I2S Microphone & OLED Display Kit
Brand: ShillehTek
SKU: ST-KIT-05
Price: 29.99 USD
Availability: InStock

SKU ST-KIT-05

$29.99 USD $35.61 Shipping & tax calculated at checkout

In stock· Order by 3pm ET and it ships today

ESP32 audio-input kit with a 3.3V INMP441 I2S microphone, white SSD1306 OLED, breadboard and jumpers. Wiring and your own firmware are required; speaker, amplifier and voice-assistant software are not included.

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Overview

Product Overview

Prototype digital audio input with the ESP32 INMP441 I2S Microphone & OLED Display Kit. The pre-soldered INMP441 captures microphone data over I2S, while the separate 0.96-inch white SSD1306 display uses I2C for your firmware's status messages or experimental results. A pre-soldered 38-pin ESP32 USB-C board with 4MB flash, 400-point breadboard and 10cm jumper set provide the core hardware for audio-reactive projects and microphone-interface learning. Power the microphone at 3.3V and develop the wiring and firmware yourself; speaker, amplifier and voice-assistant software are not supplied.

Bundle value: Purchased separately, the included component variants total $35.61. This kit is $29.99, saving $5.62.

1 × pre-soldered 38-pin ESP32 USB-C board with 4MB flash
1 × pre-soldered INMP441 I2S omnidirectional microphone
1 × 0.96-inch white SSD1306 I2C OLED display
1 × 400-point solderless breadboard
1 × 120-piece, 10cm jumper wire set: male–male, male–female and female–female

The microphone requires 3.3V power. Wiring and your own firmware are required; connect the ESP32 beside the breadboard using jumper wires. USB-C data cable, computer, power source, speaker and amplifier are not included. Voice-assistant or wake-word software is not supplied.

Read the kit setup guide for assembly planning, required extras and component references.

Questions & answers

Frequently asked questions

How do the microphone and OLED connect to the ESP32?

The INMP441 microphone uses I2S for digital audio input. The SSD1306 OLED uses I2C for display data. Your wiring and firmware must configure these as separate interfaces.

What supply voltage does the INMP441 microphone require?

Power the INMP441 microphone at 3.3V. Follow the microphone and ESP32 wiring information when connecting the power and digital signal lines.

Can this kit play audio through a speaker?

The supplied microphone provides audio input, and the OLED provides visual output. A speaker and audio amplifier are not included; playback requires additional hardware and suitable firmware.

Does it come with voice-assistant or wake-word software?

No voice-assistant or wake-word software is supplied. This is a development kit for your own audio-input, sound-level, status-display and other custom firmware experiments.

What comes in the kit, and what else is required?

You receive a pre-soldered 38-pin ESP32 USB-C board with 4MB flash, a pre-soldered INMP441 microphone, a 0.96-inch white SSD1306 OLED, a 400-point breadboard and 120 10cm jumper wires. You supply a USB-C data cable, computer, power source and project firmware.

Have other questions?

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What's included

Features & Specs

Core ControllerIncludes 1 × pre-soldered 38-pin ESP32 USB-C board with 4MB flash.

Digital MicrophoneIncludes 1 × INMP441 omnidirectional MEMS microphone with digital I2S output.

Custom Audio FirmwareYour firmware must configure the ESP32 I2S input and process the microphone samples; a complete audio application is not supplied.

Mic VoltageThe microphone requires 3.3V power.

OLED DisplayIncludes 1 × 0.96-inch white SSD1306 OLED with 128x64 resolution over I2C.

Separate ComponentsThe microphone uses I2S and the display uses I2C; wire and configure each interface separately.

Prototyping PartsAlso included are 1 × 400-point solderless breadboard and 1 × 120-piece 10cm jumper wire set in male–male, male–female, and female–female types.

Setup ScopeWiring and your own firmware are required, and USB-C data cable, computer, power source, speaker, amplifier, and voice-assistant or wake-word software are not included.

Reference