Smart Doorbell Camera Kit with Raspberry Pi Zero 2W + Camera
Smart Doorbell Camera Kit – Build a Line-Following Security Robot with Raspberry Pi Zero 2W
Every part needed, pre-tested for compatibility, with an AI build companion trained on this exact project. Shipped from Bengaluru in 3-5 days.
Replace the IR sensor array with pure vision. This kit uses the Pi Camera Module 2 and OpenCV running on a Raspberry Pi Zero 2W to detect a black line—no additional line‑sensor hardware. The result is a 2‑wheel‑drive robot that can follow a patrol path as a mobile security platform or a doorbell camera that moves to preset vantage points. All mechanical parts, motors, and power cells are included in one box, ready to assemble in a single afternoon.
What You'll Build
Assemble a 2WD chassis robot with a camera that sees the line. Your code will capture live frames, threshold them to isolate the black line, compute the robot’s deviation, and steer the TT gear motors via the L298N driver. When finished, the robot autonomously tracks a black tape on any light‑colored floor, while the Pi’s camera can optionally stream video over Wi‑Fi—transforming the bot into a roving doorbell security camera that patrols your hallway or room.
What You'll Learn
- Install OpenCV on Raspberry Pi OS Lite and capture camera frames in Python
- Process images in real time to find a black line using thresholding and contour detection
- Control TT gear motors through an L298N motor driver based on the line’s position
- Assemble a robot chassis, mount a castor wheel, and power everything with 18650 rechargeable cells
Kit Contents
| Component | Quantity |
|---|---|
| Raspberry Pi Zero 2W | 1 |
| Pi Camera Module 2 | 1 |
| L298N Motor Driver | 1 |
| TT Gear Motor | 2 |
| 2WD Chassis | 1 |
| Castor Wheel | 1 |
| 18650 Cell | 2 |
| 18650 Holder | 1 |
| MicroSD Card 16GB | 1 |
| Micro USB Cable | 1 |
| M-F Wires | 20 |
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 Class 11‑12 students exploring computer vision as a school project, B.Tech ECE/EEE undergraduates prototyping for Smart India Hackathon or robotics clubs, and ATL Tinkering Lab mentors who want to teach OpenCV‑based line following without extra sensor hardware. The beginner‑friendly build and AI companion make it equally suitable for self‑learners in IIT, NIT, VIT, and BITS campuses looking for a quick, rewarding embedded vision 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.
How does the camera detect the line without IR sensors?
OpenCV processes each video frame to find the black line through thresholding and contour analysis. The Pi Zero 2W calculates the line’s centre offset and sends corrective PWM signals to the L298N motor driver—no IR emitter‑receiver pair needed.
Can I stream live video from the robot while it follows the line?
Yes, the Pi Camera Module 2 streams video over Wi‑Fi using a simple Python web server. You can view the feed on a phone or laptop, turning the robot into a mobile doorbell camera that follows the tape path and provides live surveillance.
What if I’ve never used OpenCV before?
The AI companion walks you through every step: flashing the SD card, installing dependencies, writing the detection script, and tuning the threshold values. You’ll have a working line follower even with zero prior OpenCV experience.
Can I later add obstacle avoidance or expand the project?
Absolutely. The GPIO header on the Pi Zero 2W is fully accessible. You can attach ultrasonic sensors, add a buzzer, or modify the code for more complex behaviors. The AI assistant provides modification tips too.
Doorbell Security — OpenCV on Pi Zero 2W detects black line from camera instead of IR sensors — software-defined line following.
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