Smart Toothbrushing Timer – Raspberry Pi Pico, OLED & RGB LEDs

🪥 Smart Toothbrushing Timer – Raspberry Pi Pico, OLED & RGB LEDs

Make toothbrushing more fun with this DIY electronic toothbrushing timer, powered by a Raspberry Pi Pico!

I designed this project to help children develop better brushing habits through colorful LED animations, a countdown display, and an interactive experience.

Instead of a simple timer, this little device turns brushing your teeth into a fun daily challenge! 😁

✨ Features

• ⏱ 3 Timer Modes: Choose between 1, 2, or 3 minutes.

• 🌈 12 RGB LEDs: A WS2812 LED ring with rotating, color-changing animations during the countdown.

• 🖥 OLED Display: A 128×32 screen showing the timer information.

• 🔘 4 Physical Buttons: Three buttons to select the brushing duration and one to reset the timer.

• 🎉 Fun Completion Animation: The LEDs flash green for 5 seconds when the timer finishes.

• 🏆 Encouraging Messages: The OLED displays "C'est fini !" (Finished!) and "Bravo!" (Well done!) for 10 seconds.

• 🔄 Automatic Reset: The timer automatically returns to its ready state, with the LEDs switched off.

🔧 Electronic Components

This project uses:

• 1× Raspberry Pi Pico (MicroPython)

• 1× SSD1306 OLED display – 128×32 pixels (I2C)

• 1× WS2812 RGB LED ring – 12 LEDs

• 4× Push buttons

• Connecting wires

• 3D-printed enclosure

🔌 GPIO Connections

The buttons are configured with pull-down resistors.

🎮 How It Works

1. Choose Your Brushing Time

Press one of the three buttons:

• 🟢 1 minute – Quick brushing

• 🔵 2 minutes – Recommended brushing duration

• 🟣 3 minutes – Extended brushing

2. Start Brushing! 🪥

The countdown begins on the OLED screen.

During the countdown, the 12 RGB LEDs rotate and change colors, creating a fun visual animation.

3. Time's Up! 🎉

When the countdown reaches zero:

• The LED ring flashes green for 5 seconds.

• The OLED displays "C'est fini !" and "Bravo!" for 10 seconds.

• The timer automatically resets to the ready screen.

4. Reset Anytime

The dedicated reset button allows you to stop the countdown and return to the ready state immediately.

💻 Software

The project is programmed in MicroPython for the Raspberry Pi Pico.

The code manages the OLED display, LED animations, button inputs, countdown and automatic reset.

❤ Support My Design

If you enjoy this project, don't forget to:

• ❤ Like the model

• 📸 Share photos of your finished build

• 💬 Leave feedback or suggestions

• ⭐ Follow my profile for more 3D printing and electronics projects!

I love combining 3D printing, electronics, and programming to create useful everyday objects.

Happy printing, happy building, and happy brushing! 🪥🌈