Home Security Motion Sensor Kit with Raspberry Pi Zero + DHT22
DIY Home Security System with Raspberry Pi Zero – Motion & Temperature Alerts
Every part needed, pre-tested for compatibility, with an AI build companion trained on this exact project. Shipped from Bengaluru in 3-5 days.
Build a self-contained home security node that detects motion and monitors room climate, then sends instant alerts straight to your phone. The Raspberry Pi Zero W acts as an on-device MQTT broker and sensor publisher, so your data never leaves your local network. Within an afternoon, you’ll have a working security system that’s fully under your control.
What You'll Build
You will assemble and program a compact security device that publishes real-time motion events and DHT22 temperature/humidity readings every 30 seconds to an MQTT broker. The published data can be viewed on any MQTT client app on your smartphone or laptop, giving you a live dashboard of your room’s security status without any cloud dependency.
What You'll Learn
- Setting up Mosquitto MQTT broker and clients on Raspberry Pi OS
- Interfacing DHT22 temperature/humidity and HC-SR501 PIR sensors via GPIO
- Writing Python scripts to publish sensor data over Wi-Fi with timed loops
- Monitoring MQTT messages using mobile apps for real-time alerts
Kit Contents
| Component | Quantity |
|---|---|
| Raspberry Pi Zero W | 1 |
| DHT22 | 1 |
| HC-SR501 PIR | 1 |
| 10kΩ Resistors | 5 |
| 4.7kΩ Resistors | 5 |
| 40-pin GPIO Header | 1 |
| M-F Wires | 20 |
| Micro USB Cable | 1 |
| MicroSD Card 16GB | 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
Ideal for CBSE Class 11–12 students building networking or IoT projects, B.Tech ECE/EEE freshers prototyping a mini home automation system, and ATL Tinkering Lab mentors running sensor workshops. If you want to move beyond basic Arduino kits and understand real-time MQTT communication on a Linux board, this project is a perfect next step.
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 access the AI companion for instant guidance, or send a WhatsApp message to our support team. You’ll get project-specific troubleshooting, not generic forum replies.
Do I need an external monitor or keyboard for the Raspberry Pi Zero?
No. The pre‑flashed MicroSD card boots Raspberry Pi OS Lite with SSH and Wi‑Fi enabled, so you can set everything up headlessly from your laptop or phone.
Can I view the sensor data on my phone?
Absolutely. You’ll install an MQTT client app like MQTT Dash or IoT MQTT Panel on your Android or iOS device, subscribe to the topics, and watch motion events and temperature/humidity readings update in real time.
What is the detection range of the PIR sensor?
The HC-SR501 motion sensor covers a 120‑degree cone and detects movement up to 7 meters away, making it suitable for monitoring a typical room or corridor.
Home Security — Pi Zero W runs Mosquitto MQTT broker. DHT22 and PIR data published every 30 seconds from GPIO.
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