Arduino Smart Cane Obstacle Detection & Haptic Feedback Kit
Advanced Assistive Smart Cane with Arduino Nano, Dual HC-SR04 Sensors, and Proportional Haptic Feedback
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 a walking cane that doesn't just tap the ground but actively scans ahead for obstacles at chest and ground level, then communicates through pulses felt in the palm. This is the project you'll complete - a fully integrated assistive cane engineered for guiding a visually impaired user. The two HC-SR04 sensors create a detection zone up to 2 meters ahead, while the coin vibration motors ramp up intensity as an obstacle gets closer, delivering intuitive, proportional feedback without a single audible beep.
What You'll Build
You will assemble and calibrate a complete wearable assistive device on a standard walking cane. The upward-angled sensor catches overhanging branches and signboards. The forward-facing sensor detects walls, vehicles, and people at ground level. When an obstacle is within range, the corresponding motor vibrates with a strength that mirrors urgency - a gentle buzz for distant objects, a sharp pulse for immediate hazards. You'll solder the circuit on a compact prototype board, housing the Arduino Nano, TP4056 charging module, and LiPo battery in a slim enclosure at the handle.
What You'll Learn
- Precision ultrasonic ranging with dual HC-SR04 sensors, including echo pin timing and interference mitigation between sensors
- PWM-based proportional haptic feedback control using BC547 transistors to drive coin vibration motors without overloading Arduino pins
- Wearable electronics integration - managing weight, battery life, and durable soldered connections on a moving cane
- User-centric calibration logic: mapping raw distance to vibration intensity curves that feel intuitive under real mobility scenarios
Kit Contents
| Component | Quantity |
|---|---|
| Arduino Nano | 1 |
| HC-SR04 | 2 |
| Coin Vibration Motor | 2 |
| BC547 Transistor | 2 |
| 1N4007 Diode | 4 |
| 100? Resistors | 5 |
| 10k? Resistors | 5 |
| 3.7V LiPo 1000mAh | 1 |
| TP4056 Module | 1 |
| PCB Prototype Board | 2 |
| Walking Cane | 1 |
| Soldering Iron | 1 |
| Solder Wire | 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
Built for B.Tech ECE and EEE students tackling their capstone project, especially those targeting assistive technology themes at Smart India Hackathon or similar events. It aligns with the project-based learning goals of IIT, NIT, VIT, and BITS Pilani coursework where functional prototypes carry full weight in viva assessments. CBSE Class 12 students exploring the ATL Tinkering Lab under inclusive innovation will also find the build challenging but mapped to clear outcomes.
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 start a session with the AI companion, which has been trained on every connection, calibration step, and common fault for this cane. If you need a human, WhatsApp support is included.
How do I prevent the two ultrasonic sensors from interfering with each other?
The code and circuit layout provided use sequential triggering with a small delay between sensors. The AI companion also suggests an optimal physical spacing on the cane shaft to minimize acoustic crosstalk.
Can this cane be used in rain or dusty conditions?
The kit creates a functional prototype. The LiPo battery and exposed board are not weather-sealed. For outdoor testing, you'll need to design a 3D-printed enclosure - a common extension in B.Tech project reports that the AI companion can help you optimize.
Is this ready for trials with visually impaired users?
Once assembled and calibrated, the prototype demonstrates the core haptic feedback principle effectively. For formal user trials as part of a dissertation, you should add a padded handle grip over the motors and secure all wiring internally.
Tank Monitoring - HC-SR04 on cane detects obstacles within 2m and vibrates at proportional intensity to guide visually impaired user.
What's in this kit
- Arduino Nano
- HC-SR04 x2
- Coin Vibration Motor x2
- BC547 Transistor x2
- 1N4007 Diode x4
- 100? Resistors x5
- 10k? Resistors x5
- 3.7V LiPo 1000mAh
- TP4056 Module
- PCB Prototype Board x2
- Walking Cane
- Soldering Iron
- Solder Wire
Choose your assembly option:
- Soldering Kit - 25W soldering iron, 60/40 solder wire, flux, and small perfboard for permanent assembly.
- Breadboard Combo - 800-point full-size breadboard with 65-piece jumper wire pack for solderless prototyping.
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