Pi Pico HC-SR04 Distance Meter
Raspberry Pi Pico Distance Meter with HC-SR04, OLED & Buzzer – Build in Hours
Every part needed, pre-tested for compatibility, with an AI build companion trained on this exact project. Shipped from Bengaluru in 3-5 days.
Step into embedded systems by building a practical distance meter that measures, displays, and warns. This kit pairs a Raspberry Pi Pico with an HC-SR04 ultrasonic module to create a handheld tool showing centimetres and inches on a crisp OLED screen, with a buzzer that sounds the moment anything comes closer than 10 cm.
What You'll Build
You’ll assemble a fully functional distance meter on a breadboard, programmed in MicroPython. The OLED cycles between cm and inches in real time, while the active buzzer gives an immediate alert for close-proximity situations. Use it as a parking aid prototype, a science fair demonstration, or a desktop tool for measuring component spacing—the outcome is tangible, responsive, and ready to extend.
What You'll Learn
- Interface the HC-SR04 ultrasonic sensor with Raspberry Pi Pico using pulse timing in MicroPython
- Convert raw sensor data into centimetres and inches with calibration constants
- Drive a 0.96‑inch I2C OLED display to show real-time distance readings
- Write conditional logic to trigger an active buzzer when distance falls below a 10 cm threshold
Kit Contents
| Component | Quantity |
|---|---|
| Raspberry Pi Pico | 1 |
| HC-SR04 | 1 |
| 0.96in OLED | 1 |
| Active Buzzer | 1 |
| 10kΩ Resistors | 5 |
| 400-pt Breadboard | 1 |
| M-M Wires | 20 |
| Micro USB Cable | 1 |
Why Buy This Kit Instead of Sourcing Parts Separately
| Factor | Sourcing Separately | Compoden Kit |
|---|---|---|
| Compatibility checks | You verify every part | Pre-tested as a system |
| Build support | Forums and scattered tutorials | AI companion trained on this exact project |
| Time to first working build | Days of debugging | Hours, with step-by-step guidance |
| Shipping coordination | Multiple sellers, multiple delays | One shipment from Bengaluru in 3-5 days |
Who This Kit Is For
This kit is designed for CBSE Class 11‑12 students demonstrating sensor‑based physics projects, B.Tech first‑year ECE/EEE mini‑project groups prototyping measurement instruments, and ATL Tinkering Lab facilitators running ultrasonic sensor workshops. Young makers aged 10+ tackling Smart India Hackathon‑style problem statements will appreciate the immediate feedback of the buzzer and display.
Built and Backed by Compoden
Every Compoden kit ships with an AI build companion trained on this exact project — accessible via a QR code on the box, with WhatsApp and email backup. We've spent 10 years building projects for makers, schools, and institutions across India. If a part fails because of a manufacturing defect, replace it free within 7 days.
What if I get stuck during the build?
Scan the QR code to launch the AI companion trained on this kit; it provides step‑by‑step troubleshooting. You can also send a WhatsApp message with a photo of your setup and get a response within hours.
Can this distance meter work as a DIY parking sensor?
Absolutely. The buzzer alerts below 10 cm, and you can easily extend the code to count down or activate an LED strip. Many students mount the assembled board on a toy car to simulate reverse parking.
How accurate is the HC-SR04 sensor?
The HC-SR04 reliably measures distances between 2 cm and 400 cm with a resolution of about 3 mm. The MicroPython code included with the kit averages multiple readings to smooth out any occasional outliers.
Is this suitable for a CBSE school science exhibition?
Yes, the kit aligns perfectly with Class 11‑12 physics curriculum topics on sound waves and time‑of‑flight measurement. The OLED display and buzzer make live data easy for judges and visitors to see and hear.
HC-SR04 ultrasonic returns distance in MicroPython. OLED shows cm and inches with warning buzzer under 10cm.
What's in this kit
Shipping Information
- Prepaid Orders: ₹75 for orders up to ₹999, FREE shipping above ₹999
- COD Orders: ₹125 shipping + ₹50 COD fee = ₹175 total
- Delivery Timeline: Dispatch in 1-2 days, delivery in 2-7 days depending on location
Returns & Warranty
- 7-Day Return: Manufacturing defects only (approval required)
- Warranty: 7 days from delivery
- Non-Returnable: Batteries, consumables, cut wires, clearance items