Grain Store Temperature and Humidity Array Variant 22
Advanced Grain Storage Temperature & Humidity Monitoring Array – Arduino Mega + DS18B20 + DHT22 Kit
Every part needed, pre-tested for compatibility, with an AI build companion trained on this exact project. Shipped from Bengaluru in 3-5 days.
Every year, Indian farmers lose tonnes of stored grain to undetected hot spots that develop deep inside bins. With this kit, you’ll build a six-point temperature array and dual humidity sensor system that continuously monitors a grain pile from surface to core, logging data to an SD card and displaying live readings on an OLED — exactly the kind of project that wins Smart India Hackathon agriculture challenges.
What You'll Build
A fully functional grain storage monitoring instrument that scans six DS18B20 probes inserted at different depths alongside two DHT22 sensors at the air level, records timestamped data using a DS3231 real-time clock, and displays temperature and humidity trends on a 0.96-inch OLED. The system can be deployed in a grain godown or co-operative storage facility for experimental validation.
What You'll Learn
- Wiring and reading multiple DS18B20 1-Wire sensors in parasitic mode on Arduino Mega
- Calibrating and comparing DHT22 humidity readings against ambient air conditions
- Implementing real-time data logging to MicroSD with RTC timestamps for later analysis in Excel
- Designing a field-deployable PCB prototype with noise filtering using capacitors and proper ground planes
Kit Contents
| Component | Quantity |
|---|---|
| Arduino Mega 2560 | 1 |
| DS18B20 Probe | 6 |
| DHT22 | 2 |
| DS3231 RTC | 1 |
| MicroSD Module | 1 |
| 0.96in OLED | 1 |
| 4.7kΩ Resistors | 10 |
| 100nF Caps | 10 |
| PCB Prototype Board | 2 |
| 9V Battery Snap | 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 kit is built for B.Tech ECE/EEE and agricultural engineering students working on IoT-based precision agriculture projects, Smart India Hackathon teams aiming to solve grain spoilage, and electronics enthusiasts at IITs, NITs, VIT, or BITS Pilani who need a ready-to-deploy advanced sensor array.
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 for an AI companion trained on this exact project, or WhatsApp us for human support.
Are soldering tools included?
Yes, the kit includes a soldering iron and solder wire. You’ll also need basic tools like wire strippers and a multimeter (not included).
Can this system be powered by a 9V battery for long periods?
The 9V battery is suitable for short-term testing and prototyping. For long-term grain storage monitoring, we recommend a 12V solar-battery setup (not included).
Will this kit help in preparing for agriculture hackathons?
Absolutely. The six-point DS18B20 array and SD card logging mirror the exact requirements seen in Smart India Hackathon agriculture challenges.
Six DS18B20 probes at different depths + DHT22 at air level detect hot spots in stored grain bin.
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.
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