Certified Agricultural IoT Node Pro: Build a Blockchain-Secured Data Node 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 equips you to build a solar-powered, tamper-proof agricultural sensor node that posts soil moisture, temperature, humidity, and light readings to a blockchain-anchored data marketplace via secure MQTT TLS. At its core is the Arduino Portenta C33, which uses its onboard secure element to cryptographically sign every sensor payload, ensuring data authenticity from field to marketplace. By assembling and coding this node, you'll master the hardware and software stack trusted by modern precision agriculture platforms.

What You'll Build

You will assemble a rugged, waterproof enclosure housing a multi-sensor system, energy harvesting circuit, and the Portenta C33. The finished node autonomously collects environmental data from three soil moisture probes, a DHT22, and a BH1750, timestamps it with the DS3231 RTC, signs it with hardware-backed keys, and publishes the payload over MQTT TLS directly to a blockchain marketplace. The build results in a deployable device that can serve as a trust anchor for your own agri-data monetisation project or hackathon entry.

What You'll Learn

• Configuring the Arduino Portenta C33's hardware secure element for sensor data signing
• Interfacing multiple environmental and soil

  C33 with hardware-signed sensor readings posts to a blockchain-anchored agricultural data marketplace via MQTT TLS.

  What's in this kit

  • Arduino Portenta C33
  • Portenta Mid Carrier
  • Soil Moisture Sensor x3
  • DHT22
  • BH1750
  • DS3231 RTC
  • MicroSD Module
  • Solar Panel 6V 2W
  • TP4056 Module
  • 18650 Cell x2
  • LM2596 Buck Converter
  • 4.7kΩ Resistors x5
  • 100nF Caps x10
  • PCB Prototype Board x2
  • Waterproof Enclosure
  • Soldering Iron
  • Solder Wire

  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.