Auto Light Energy Saver Kit with Raspberry Pi Zero + DHT22
Build an Auto Light Energy Saver with Raspberry Pi Zero, MQTT, and DHT22 – Learn IoT Energy Monitoring
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 a Raspberry Pi Zero W into the brain of an energy-saving smart room controller. You’ll run a local Mosquitto MQTT broker on the Pi, then publish temperature, humidity, and motion data from a DHT22 and PIR sensor every 30 seconds. Use that real-time data stream to automatically switch off lights when no one is around, or adjust fans based on ambient conditions — cutting energy waste in your home, school lab, or hostel room.
What You'll Build
A fully self-contained IoT sensor node. The Raspberry Pi Zero W collects readings from the DHT22 and HC-SR501 PIR, pushes them to MQTT topics every 30 seconds, and lets you subscribe from any device on the same network. You can immediately turn that data into actions — like powering down appliances when the room is empty or when temperature/humidity levels suggest no cooling is needed — directly reducing electricity consumption.
What You'll Learn
- Configure a Raspberry Pi Zero W as a dedicated MQTT broker using Mosquitto
- Interface a DHT22 temperature/humidity sensor and a HC-SR501 PIR motion detector via GPIO
- Write Python scripts to publish sensor readings to MQTT topics on a fixed interval
- Create a basic IoT dashboard or MQTT subscriber to visualize data and trigger energy-saving rules
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
Perfect for CBSE Class 11-12 students building electronics or computer science projects, B.Tech ECE/EEE undergraduates prototyping IoT solutions for Smart India Hackathon, ATL Tinkering Lab mentors running energy conservation workshops, and engineering aspirants at IITs, NITs, VIT, and BITS who want hands-on experience with MQTT, Python, and sensor networks.
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 launch our AI companion with detailed, step-by-step instructions tailored to this kit. For direct human help, message us on WhatsApp — we respond within hours.
Can I monitor energy usage remotely over the internet?
Yes. The Pi Zero W has built‑in Wi‑Fi. Once your MQTT broker is running, you can forward data to cloud platforms like ThingSpeak or Adafruit IO and check sensor readings from anywhere.
Do I need a breadboard or soldering iron?
No soldering is required; the GPIO header comes pre‑soldered. All sensor connections use jumper wires directly from the Pi’s header. You can work without a breadboard, though a small breadboard (not included) makes wire management easier.
How does this kit actually save energy?
You write the logic that links sensor data to appliance control. When the PIR detects no motion for a set period, or the DHT22 reports comfortable temperature/humidity, you can trigger solid‑state relays (not included) to turn off lights, fans, or AC, eliminating wasted power.
Energy Saving — 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