📻 DIY Digital FM Radio With Arduino + 3D Printed Case

Build your own digital FM radio using an Arduino Uno, a TEA5767 FM module, and a custom 3D printed enclosure. This radio:

* 📡 Receives FM stations digitally

* 🎛 Tunes using a button

* 🎧 Works with headphones

* 🔊 Connects to vintage radios or external speakers

* 📲 Can transmit to Bluetooth audio receivers

* 🖨 Has a fully custom 3D printed case

Perfect for beginners and makers who love audio projects!

Downloads

📻 DIY Digital FM Radio With Arduino + 3D Printed Case : 8 Steps - Instructables.pdf

Supplies

Electronics

* Arduino Uno

* TEA5767 FM Radio Module (choose an already wired, to avoid soldering the small module)

* Push button

* OLED display

* LM386 Audio Amplifier module (or similar)

* 3.5mm audio jack

* Optional: Bluetooth audio transmitter module

* Optional: Vintage radio or powered speaker

* Jumper wires

* Breadboard

* Power, I used a cable converting 220V to 5V.

Tools

* 3D printer .. or ask a friend :)

* PLA filament

* Soldering iron

* Computer with Arduino IDE

⚙️ Upload the Arduino Code (DO THIS FIRST)

Before wiring everything permanently, upload the code.

Install Required Library

In Arduino IDE:

* Go to **Sketch → Include Library → Manage Libraries**

* Search for **TEA5767**

* Install a compatible TEA5767 library

Arduino Code

Download the latest version on GitHub

Important : change the frequency of the radios according to your location :) You can preset 10 different radios and frequencies.

Upload to your Arduino Uno. If it uploads successfully, you’re ready for wiring.

🔌 Wiring the FM Module, OLED Display, Etc

TEA5767 Wiring

| TEA5767 Pin | Arduino Uno |

| VCC | 3.5V |

| GND | GND |

| SDA | A4 |

| SCL | A5 |

The TEA5767 communicates using I2C.

LCD Screen Wiring

| LCD Pin | Arduino Uno |

| VCC | 3.5V |

| GND | GND |

| SDA | SDA Uno |

| SCL | SCL Uno |

Push Button Wiring

* One side of button → Pin 12

* Other side → GND

We use Arduino’s internal pull-up resistor.

🔊 Add the Audio Amplifier (LM386)

The TEA5767 outputs low-level audio, so we amplify it.

Connections:

* TEA5767 Audio Out → LM386 Input, mine was jack to jack

* LM386 VCC → 5V

* LM386 GND → GND

* LM386 Output → 3.5mm jack OR speaker. In my case it was cable connections

Now your radio can drive:

* Headphones

* External speakers

* Vintage radio AUX input

🎧 Audio Output Options

This is what makes the project unique and clickable.

Option 1: Headphones

Directly plug into 3.5mm jack.

Option 2: Vintage Radio

If your vintage radio has AUX input, connect the output.

If not:

You can connect to a small FM transmitter module and rebroadcast the signal locally.

Option 3: Bluetooth

Connect output to:

* Bluetooth audio transmitter module

* Then pair with Bluetooth speaker

Now your DIY radio is wireless.

🖨 3D Print the Case

Download the stl file from GitHub : LINK

Transform to a gcode file with Cura, steps for both .stl files :

Open in Cura
Change XY to X=80mm, Y=80mm
Slice and Export to .gcode file
Transfer to the 3d printer and print

Print settings:

* PLA

* 0.2mm layer height

* 20% infill

* No supports if designed properly

Mount components with:

* M3 screws

* Hot glue (if needed)

🧪 Final Testing

Power the Arduino.

Plug in headphones or speaker.

Press the button

If you hear static:

* Adjust antenna wire length (75cm works well)

* Keep wires short

* Avoid USB noise

🎯 Why This Project Is Awesome

* Beginner friendly

* Mixes electronics + audio + 3D printing

* Expandable

* Great gift idea

* Can be modern OR retro

Keywords

Digital FM Radio

Arduino UNO

3D Printed Case

Modern Radio

Retro Radio