Pi 4 Digital Twin Sensor Shadow Kit with Raspberry Pi 4 + DHT22
Master Industrial IoT: Raspberry Pi 4 Digital Twin AWS IoT Shadow Kit with DHT22 & Relay
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 advanced kit transforms a Raspberry Pi 4 into a cloud-synced edge device that mirrors real-world sensor states in AWS IoT Device Shadow. You’ll program the Pi to publish DHT22 temperature and humidity readings every half-second, while an AWS Lambda function writes a desired relay state back to the GPIO pin. Perfect for prototyping industrial IoT gateways, honing your cloud integration skills for hackathons, or demonstrating digital twin concepts in your B.Tech project.
What You'll Build
You’ll deploy a local IoT node that continuously syncs twin DHT22 sensors to AWS Device Shadow. A cloud Lambda function listens for shadow updates and toggles a physical 5V relay on the Pi, creating a bi-directional control loop. The result is a fully functional digital shadow of a sensor-actuator system, ready for Industry 4.0 demos.
What You'll Learn
- Design an edge-to-cloud data pipeline using MQTT and AWS IoT Core
- Implement device shadows to synchronize sensor state with desired cloud state
- Write AWS Lambda functions that trigger GPIO changes on a Raspberry Pi
- Troubleshoot real-time IoT communication delays and shadow document conflicts
Kit Contents
| Component | Quantity |
|---|---|
| Raspberry Pi 4 Model B 4GB | 1 |
| DHT22 | 2 |
| ACS712 5A | 1 |
| 5V Relay Module | 1 |
| 4.7kΩ Resistors | 5 |
| 40-pin GPIO Header | 1 |
| M-F Wires | 20 |
| MicroSD Card 32GB | 1 |
| USB-C PSU | 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
Advanced B.Tech ECE/EEE students building final-year IoT or industrial automation prototypes. Ideal for Smart India Hackathon teams needing a reliable AWS-connected sensor system, and IIT/NIT/VIT/BITS research assistants working on digital twin demos. Also suits ATL Tinkering Lab mentors upskilling in cloud-based control loops and professionals exploring edge-to-cloud MQTT architectures.
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 included in the box to access the AI companion, which is pre-loaded with every step of this digital twin project. You can also reach us on WhatsApp for human backup if the issue persists.
Do I need an AWS account, and is there a cost?
Yes, you’ll need a free-tier AWS account. The kit guide walks you through setting up IoT Core and Lambda within the free usage limits so you incur no charges during testing.
Can I modify the Lambda function for different actuator logic?
Absolutely. The AI companion provides the Python code, and we encourage customisation. The relay module can respond to any shadow desired state condition you define.
What if I want to add more sensors later?
The kit’s breadboard-friendly design and spare GPIO pins make it easy to integrate additional I2C or analog sensors. The AI companion can suggest compatible modules and code snippets.
Pi 4 syncs GPIO sensor state to AWS IoT Device Shadow every 500ms. Lambda reflects desired state back to 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