Blind Stick Obstacle Detector Kit v3
Blind Stick Obstacle Detector Kit v3 – Build a Smart Assistant with Raspberry Pi Pico
Every part needed, pre-tested for compatibility, with an AI build companion trained on this exact project. Shipped from Bengaluru in 3-5 days.
This kit turns a simple walking stick into a smart sensor that detects obstacles up to 4 meters away. The OLED screen displays the exact distance in centimeters or inches, while a sharp buzzer warns when you're within 10 cm of an object. Perfect for learning how real-world assistive devices work and for building empathy-driven engineering solutions.
What You'll Build
You'll assemble a handheld or stick-mounted obstacle detector that reads ultrasonic distance and shows it on a crisp 0.96-inch OLED. The buzzer sounds an alert when objects are dangerously close, just like commercial smart canes. Mount it on a wooden stick or hold it by hand — it's a complete working prototype of an assistive technology.
What You'll Learn
- MicroPython coding for an ultrasonic sensor and OLED display
- Reading distance in both centimeters and inches on-the-fly
- Controlling an active buzzer with threshold logic — beep only under 10 cm
- Designing accessibility solutions with embedded systems and breadboard prototyping
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
Designed for school students in CBSE/ICSE/state boards, ATL tinkering labs, and young makers aged 10-15. Also a great starter kit for B.Tech 1st-year students learning embedded systems or anyone attending a Smart India Hackathon challenge on accessibility. It brings together coding and real-world impact in a single project.
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 chat with the AI companion; it walks you through wiring, code, and debugging in minutes. You can also reach out on WhatsApp for direct help from our team.
Does the buzzer sound continuously or only when something is very close?
It only beeps when the ultrasonic sensor detects an obstacle within 10 cm, so it's silent during normal walking and completely unobtrusive.
Can I mount this on a real walking stick?
Absolutely. The breadboard is compact enough to secure with rubber bands or a 3D-printed clip. Many students tape the whole assembly to a cane for realistic field testing.
What programming language is used?
MicroPython — it's beginner-friendly and lets you read sensor data and update the OLED with just a few lines. The AI companion provides complete, copy-paste ready code.
Accessibility — 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