Project Hub /Audio Displays & Interactive Media/Analog Audio & Amplifier Circuits/Mini FM Radio Earbud: DIY RDA5807M Receiver Circuit Project

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INDUSBOARD

₹500 – ₹1,500

3 – 6 Hours

Partial Kit

Mini FM Radio Earbud: DIY RDA5807M Receiver Circuit Project

Build a tiny, earbud-sized FM radio receiver using an RDA5807M module that fits entirely inside an AirPods-style enclosure.

Originally published on ElectronicsForU

View original tutorial

Parts You'll Need

This project is sourced from another site, not written by us — this list is our best match of their components against what we stock, not a verified bill of materials. Always check the original blog (linked above) for the actual parts list before buying.

Microphone module - Analog Sound Sensor Module for Arduino Rs. 63.00
400 Points Mini Solderless Prototype PCB Breadboard High Quality Rs. 89.00
MB102 Adjustable Breadboard Power Supply Module (3.3V & 5V) for Arduino & Raspberry Pi Rs. 139.00
Jumper Wire 10 Pin Male To Male 20cm Rs. 45.00
Jumper Wire 10 Pin Male To Female 20cm Rs. 45.00

Selected: Rs. 0.00

We don't carry yet: Battery (generic / unspecified)
Speaker / Audio Amplifier
Other Dev Board (Indusboard / Maixduino / misc)
Radio Receiver / Transmitter (RC)
Arduino Coin V2

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How It Works

The Mini FM Radio Earbud project integrates an RDA5807M FM stereo radio module with an IndusBoard Coin / Arduino Coin V2 micro-controller board to form a complete, miniature audio receiver system. The RDA5807M module handles the entire radio frequency front-end, tuning into broadcast FM radio signals, demodulating the audio, and processing stereo output. Audio signals from the radio module are driven directly into a tiny 16-ohm 7mm speaker housed within the compact enclosure. Powering the entire system is a small 30 to 50mAh TWS lithium-ion battery (such as the EEMB LP401012), which provides the necessary portable voltage rail for both the processing board and the RF module. Additionally, an FM wireless microphone transmitter module can be utilized in conjunction with the receiver setup for testing or localized transmission. Because the entire circuit must fit inside an AirPods-style enclosure, power management and space-conscious signal routing are critical to its operation.

Why Build This

Design ultra-compact wearable audio receivers that fit within strict physical constraints like AirPods-style enclosures.

Implement miniature RF receiver modules and integrate them with compact microcontroller platforms like the IndusBoard Coin.

Manage ultra-low-power systems powered by micro-scale TWS lithium-ion batteries.

Real-World Application

Miniaturized wearable audio receivers, custom covert listening devices, and compact personal electronics.

Skills You'll Learn

RF receiver integration

micro-scale component soldering

compact enclosure spatial planning

power management for wearable electronics

audio driver impedance matching

Safety Precautions

Exercise care when handling small lithium-ion batteries and soldering miniature components to prevent short circuits.

Technology Tags

FM RADIO

RDA5807M

I2C

MICROCONTROLLER

AUDIO ELECTRONICS

MINIATURE ELECTRONICS

TWS EARBUDS

Frequently Asked Questions

How can all these components fit inside an AirPods-style enclosure?

Success depends on precise spatial planning, using ultra-thin wiring, and utilizing surface-mount components like the IndusBoard Coin and the RDA5807M module alongside a tiny 7mm speaker.

What battery should I use for this project?

A 30 to 50mAh TWS lithium-ion battery, such as the EEMB LP401012, is specified because of its extremely small form factor required for earbud-sized wearable builds.

Is any software programming required?

No software is listed for this project, though your specific module setup may require basic control configurations depending on how you interface the RDA5807M with the IndusBoard Coin.

Gallery

This page is part of Kitkraft's Project Hub — a curated collection of electronics & robotics projects gathered from the maker community to help students and hobbyists discover and learn to build. Kitkraft does not claim authorship of the original project, and makes no representation as to the accuracy, completeness or safety of third-party source material. The summary and "How It Works" explanation above are AI-generated, rewritten with reference to the original tutorial — not a reproduction of it. Full credit and a direct link to the original source are provided above. If you're the original creator and have a concern about how your work is represented here, please contact us and we'll address it promptly.

Kitkraft Project Hub — curated from the maker community, credited at the source.

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