Secure Industrial Sensor Node with TrustZone
Secure Industrial Sensor Node with Arduino Portenta C33 TrustZone & MQTT over TLS
Every part needed, pre-tested for compatibility, with an AI build companion trained on this exact project. Shipped from Bengaluru in 3-5 days.
You will construct a field-ready environmental monitoring node that transmits temperature, humidity, pressure, and CO₂ readings to any MQTT broker over a TLS-encrypted channel. Crucially, the node’s Wi-Fi credentials and cloud keys are stored in an isolated secure world powered by the Portenta C33’s Arm TrustZone, completely inaccessible to the main application firmware — exactly as demanded in modern industrial IoT deployments where credential theft could compromise an entire sensor network.
What You'll Build
A fully enclosed, waterproof sensor node capable of continuous environmental data logging and cloud upload. The onboard OLED displays live readings, while the MQTT client securely publishes JSON payloads to your chosen broker (e.g., AWS IoT Core, Mosquitto). The hardware-enforced isolation ensures that even if your application code is compromised, the network credentials remain protected, making this a blueprint for security-conscious Industry 4.0 prototypes and research demonstrations.
What You'll Learn
- Implementing Arm TrustZone on the Arduino Portenta C33 to partition secure and non-secure worlds
- Configuring MQTT with TLS 1.2 mutual authentication for industrial sensor data transport
- Interfacing multiple I²C sensors (DHT22, BMP280, MH-Z19B) and managing calibration routines
- Designing a robust power supply with a buck converter and building a soldered permanent prototype on PCB board
Kit Contents
| Component | Quantity |
|---|---|
| Arduino Portenta C33 | 1 |
| Portenta Mid Carrier | 1 |
| DHT22 | 1 |
| BMP280 | 1 |
| MH-Z19B CO2 | 1 |
| LM2596 Buck Converter | 1 |
| 0.96in OLED | 1 |
| 4.7kΩ Resistors | 5 |
| 100nF Caps | 10 |
| PCB Prototype Board | 2 |
| Waterproof Enclosure | 1 |
| 5V 2A PSU | 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
This advanced kit is purpose-built for final-year B.Tech (ECE/EEE) students pursuing industrial IoT or embedded security projects, research scholars at IITs/NITs working on secure sensor networks, and participants in Smart India Hackathon challenges that require a hardware root-of-trust. It also suits professionals prototyping secure Industry 4.0 nodes or ATL Tinkering Lab mentors who want to demonstrate real-world security concepts with production-grade components.
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?
Our AI companion, trained on this exact project, will guide you step-by-step from wiring to TLS certificate generation. If you need human help, WhatsApp support is just a message away.
Can I use this node outdoors for long-term monitoring?
The waterproof enclosure protects the electronics from dust and light rain. For extended outdoor deployment, ensure proper sealing of cable glands and consider a solar charge controller (not included).
Do I need prior experience with Arm TrustZone?
Familiarity with embedded C/C++ and basic IoT concepts is expected, but the AI companion will guide you through setting up the Trusted Execution Environment. The code examples are pre-configured for the Portenta C33's secure world partition, making the learning curve manageable.
How do I integrate with a specific cloud platform?
The kit uses standard MQTT over TLS, so it works with any broker supporting MQTT (AWS IoT, Azure IoT Hub, HiveMQ, etc.). The AI companion includes endpoint configuration steps for the most popular platforms, and you can customize the publish topics and JSON schema.
C33 TrustZone isolates sensor credentials and keys from application firmware. MQTT over TLS to cloud broker.
What's in this kit
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.
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