Smart Bin Alert with Microbit Ultrasonic Kit
Build a Bin Full Alert System with BBC Micro:bit & Ultrasonic
Every part needed, pre-tested for compatibility, with an AI build companion trained on this exact project. Shipped from Bengaluru in 3-5 days.
Transform everyday waste management into a hands-on electronics project. Using the ultrasonic sensor and BBC Micro:bit, your child assembles a smart indicator that shows when a bin is nearly full - no more overflowing trash. This parking sensor kit repurposed as a bin fill monitor brings a real-use scenario alive on the workbench, teaching measurement and coding through a practical alert system.
What You'll Build
A compact sensor module that sits inside or near a bin, measures the distance to the waste level, and makes the Micro:bit LEDs display a filling bar. When the bin reaches a set threshold, the entire screen flashes to signal it's time to empty. Young makers test it with paper scraps, adjust the detection range, and see immediate visual feedback - a complete alert device they can keep using around the house.
What You'll Learn
- How an ultrasonic sensor sends sound pulses and calculates distance from echo time
- Wiring a sensor to the Micro:bit using crocodile clips and a breadboard
- Coding conditional logic in MakeCode so the display changes with fill level
- Building a self-contained gadget powered by AA batteries and interpreting real-time data
Kit Contents
| Component | Quantity |
|---|---|
| BBC Micro:bit v2 | 1 |
| HC-SR04 Ultrasonic | 1 |
| Half Breadboard | 1 |
| Crocodile Clips | 4 |
| MicroUSB Cable | 1 |
| AA Battery Holder | 1 |
| AA Batteries | 2 |
| M-M Wires | 10 |
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 curious 8-10 year olds taking their first steps into physical computing, this kit matches the curiosity of Indian students in ATL Tinkering Labs or CBSE classrooms exploring sensors. It also suits hobby parents and grandparents who want a safe, screen-free coding introduction with a tangible outcome the whole family can use.
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 inside the box to chat with the AI companion that has seen every wiring and code step for this bin alert project. You can also ping us on WhatsApp for a real human walkthrough.
Can my child test distances other than bin fill?
Absolutely. The same sensor can measure any object's distance, so after the bin alert they can try parking distance, water level in a tank, or a simple intruder alarm.
Do we need a computer for programming?
Yes, any laptop or tablet with a USB port and the free MakeCode website. The Micro:bit connects via the MicroUSB cable, and code is dragged onto the drive - no installations.
Is soldering required?
Not at all. All connections use crocodile clips and the breadboard, so fingers never touch hot metal. A child can complete the circuit entirely by clipping and plugging wires.
Parking - Ultrasonic sensor measures how full a bin is - micro:bit displays fill level and alerts when it needs emptying.
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