Greenhouse Soil Manager Kit v4
Build a Blockchain-Verified Greenhouse Sensor Gateway with Arduino Portenta C33
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 kit transforms your greenhouse into a tamper-proof data source for the emerging agricultural data economy. You'll build a solar-powered sensor hub around the Arduino Portenta C33 that reads soil moisture from three zones, ambient temperature, humidity, and light intensity—then cryptographically signs each reading using the board's onboard secure element. The data is published over MQTT with TLS encryption to a blockchain-anchored marketplace endpoint, turning raw sensor streams into verifiable digital assets. Ideal for precision agriculture research, Smart India Hackathon prototypes, and agritech startups exploring decentralized trust, this project puts you at the intersection of IoT, hardware security, and Web3.
What You'll Build
You will assemble a rugged, IP65-rated outdoor sensor node powered by a solar-recharged 18650 battery bank. The Portenta C33, mounted on the Mid Carrier, aggregates data from multiple I2C sensors, timestamps it with a DS3231 RTC, and logs locally to MicroSD. Every data packet is then hashed and digitally signed before transmission, ensuring integrity from silicon to cloud. The end result is a self-contained greenhouse monitor that provides irrefutable proof of growing conditions for certification, crop insurance, or data marketplace monetization.
What You'll Learn
- Implement hardware-based digital signing with the Arduino Portenta C33's secure element—no external HSMs needed—to guarantee sensor data integrity
- Configure MQTT with TLS encryption to securely publish telemetry to a blockchain-anchored marketplace endpoint
- Design a solar-powered 18650 battery system with TP4056 charging and LM2596 buck regulation, achieving 24/7 off-grid operation
- Manage multiple I2C sensors (soil moisture, DHT22, BH1750) and integrate RTC-timestamped logging to MicroSD for offline redundancy
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 |
| 4.7kΩ Resistors | 5 |
| 100nF Capacitors | 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
Advanced B.Tech ECE/EEE or M.Tech students preparing for Smart India Hackathon, agritech startups building proof-of-concepts for decentralized data marketplaces, and researchers at IITs, NITs, VIT, or BITS Pilani working on blockchain-IoT convergence. Also fits professionals exploring AgriStack-aligned sensor networks or farmers cooperatives piloting tamper-proof crop monitoring. Prerequisite knowledge of basic Arduino and MQTT is helpful, but the AI companion fills knowledge gaps.
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 specifically on the Greenhouse Soil Manager Kit v4, provides step-by-step guidance and troubleshooting. You can also reach us on WhatsApp for human backup.
How does the blockchain anchoring work?
The kit includes code snippets that hash and sign sensor data using the Portenta C33's secure element, then publish to a demo blockchain-anchored marketplace endpoint over MQTT TLS. You can adapt it to live networks like Polygon or IOTA.
Can I power this entirely off-grid?
Yes, the included 6V 2W solar panel, TP4056 charger, two 18650 cells, and buck converter form a reliable off-grid power supply. With typical data intervals, the system runs indefinitely in Indian sunlight conditions.
Is prior experience with blockchain necessary?
While familiarity with basic IoT helps, the kit provides all the code and the AI companion explains blockchain concepts. The kit is designed for advanced learners ready to explore hardware-anchored trust.
Greenhouse — 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