HC-SR04 Ultrasonic Distance Sensor Starter Kit Kit with Arduino Uno
HC-SR04 Ultrasonic Distance Sensor Starter Kit with Arduino Uno – Build Your Own Contactless Measuring Tool
Every part needed, pre-tested for compatibility, with an AI build companion trained on this exact project. Shipped from Bengaluru in 3-5 days.
Imagine pointing a small device at a wall and instantly seeing the distance in centimetres and inches, with a live bar graph filling up as you move closer. This kit turns that idea into a working project in a single afternoon. It is a complete, ready-to-build system for anyone curious about how smart sensors work in cars, parking assist systems, and industrial measurement tools.
What You'll Build
Your finished project is a portable ultrasonic distance meter powered by a 9V battery. The HC-SR04 sensor sends out invisible sound pulses and measures the time they take to bounce back; the Arduino Uno calculates the distance and drives a 16x2 LCD, where both centimetre and inch readings appear clearly. A custom bar graph runs across the bottom of the display, growing or shrinking as objects move in front of the sensor. Point it at a desk, a door, or even your hand, and you get instant distance feedback without touching anything.
What You'll Learn
- How ultrasonic pulses travel and how to measure time-of-flight precisely
- Connecting and programming an I2C LCD backpack to reduce wiring complexity
- Converting raw sensor data into centimetres and inches with calibration tricks
- Creating a visual bar graph on a character LCD using custom bitmaps
Kit Contents
| Component | Quantity |
|---|---|
| Arduino Uno R3 | x1 |
| HC-SR04 Ultrasonic | x1 |
| 16x2 LCD | x1 |
| I2C Backpack | x1 |
| 10kΩ Resistors | x5 |
| 400-pt Breadboard | x1 |
| M-M Wires | x20 |
| 9V Battery Snap | x1 |
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
Designed for CBSE students in classes 5 through 10 who are taking their first step into electronics, and for ATL Tinkering Lab participants who need a quick, satisfying sensor project. It also fits into B.Tech ECE introductory labs at NIT or VIT, and parent-child maker sessions on weekends. The code is simple enough for a 10-year-old to modify, yet the learning depth scales up for a 15-year-old exploring how autonomous systems perceive surroundings.
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 on the box to open the AI companion, which guides you step by step through wiring, code upload, and calibration. You can also message us on WhatsApp for personalised help.
Can the display show both centimetres and inches?
Yes. The provided code has a simple switch — just change one line to toggle between cm and inch display. The bar graph adapts automatically to the selected unit.
Does this project need any soldering?
No soldering at all. Every connection is made on the breadboard using the included male-to-male jumper wires, so it is completely reusable and safe for young hands.
What can I do after finishing this distance meter?
Once you understand how the HC-SR04 works, you can turn the same kit into a basic obstacle-avoiding robot, a water-level indicator for a tank, or a parking sensor — all with the components you already have.
Measure distance from 2cm to 400cm using ultrasonic pulses. Display cm and inches on LCD with bar graph.
What's in this kit
Other projects you can build
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