Arduino Portenta C33 Blockchain Garden Sensor Kit
Arduino Portenta C33 Garden Monitor & Blockchain Data Feeder - Smart Garden Watering Kit v4
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 assemble a weather-resistant field station that monitors soil moisture, humidity, temperature, and light - then cryptographically signs every reading using the Portenta C33's secure element and pushes them over encrypted MQTT TLS to a blockchain-anchored agricultural data marketplace. This is not a simple watering timer; it's a full-stack system that records trusted environmental datasets suitable for smart farming research, decentralized data economies, or Smart India Hackathon prototypes.
What You'll Build
A solar-powered enclosure that hosts three capacitive soil moisture probes, an air temperature/humidity sensor, a light intensity sensor, and a real-time clock. All readings are timestamped and hashed in-hardware before transmission. The kit firmware connects to a public MQTT broker with TLS 1.3, where data is published on topics that can be ingested by a blockchain oracle or a smart contract. You end up with a live dashboard of your garden's conditions and a verifiable stream of sensor data that can be sold or shared on a decentralised agricultural data platform.
What You'll Learn
- How to generate hardware-signed payloads using the Portenta C33's SE050 secure element
- Configuring MQTT with TLS mutual authentication for Tampere-grade device-to-cloud security
- Integrating an RTC and local SD buffering to ensure data integrity during network outages
- Designing a self-sustaining solar supply with 18650 cells, TP4056, and a buck converter for stable 5V/3.3V rails
Kit Contents
| Component | Quantity |
|---|---|
| Arduino Portenta C33 | 1 |
| Portenta Mid Carrier | 1 |
| Soil Moisture Sensor | 3 |
| DHT22 | 1 |
| BH1750 | 1 |
| DS3231 RTC | 1 |
| MicroSD Module | 1 |
| Solar Panel 6V 2W | 1 |
| TP4056 Module | 1 |
| 18650 Cell | 2 |
| LM2596 Buck Converter | 1 |
| 4.7k? Resistors | 5 |
| 100nF Caps | 10 |
| PCB Prototype Board | 2 |
| Waterproof Enclosure | 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
B.Tech final-year and M.Tech students in ECE/CSE working on blockchain-IoT capstone projects, Smart India Hackathon teams prototyping decentralised agri-data infrastructures, and researchers at IIT/NIT/VIT/BITS building verifiable sensor networks. Also suits embedded engineers testing Portenta C33's hardware signing for enterprise data logging.
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 open your AI companion; it knows every wiring detail and error code. If you need human help, WhatsApp us - we respond the same day.
Which blockchain can I anchor data to?
The firmware is configured for MQTT to Hyperledger Aries or Chainlink oracles. Sample smart contracts are provided for Polygon Amoy and Ethereum Sepolia testnets, but you can adapt the publisher for any EVM-compatible chain.
Is the station genuinely weatherproof?
The waterproof enclosure (IP65) protects the electronics, and the solar panel has a three-year outdoor rating. The soil probes are sealed with epoxy; only the DHT22 ventilation port needs a Gore-tex patch (included).
Can I sell the data my station collects?
The project demonstrates how to sign and anchor data streams; integration with real data marketplaces like Ocean Protocol or IOTA Streams is covered in the advanced labs. Your data becomes tamper-proof and sellable once anchored.
Garden - C33 with hardware-signed sensor readings posts to a blockchain-anchored agricultural data marketplace via MQTT TLS.
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