Home Brewing Temperature Monitor Plus Kit with Arduino Mega + Relay
Automate Your Brewing Nutrient Control with Arduino Mega – EC, pH & Temperature Auto-Dosing 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.
Transform your home brewing setup into a precision nutrient management system. This Arduino Mega‑based kit measures EC, pH, and temperature using industrial-grade sensors, then automatically triggers relay-driven dosing pumps to maintain optimal conditions. Ideal for hydroponic brewing, fermentation control, or agricultural automation projects.
What You'll Build
A fully automated monitoring and correction system that reads electrical conductivity (EC), pH, and temperature at two separate points in your reservoir, calibrates sensors with a two-point method, and activates up to four peristaltic dosing pumps via the relay module to adjust nutrient levels in real time. All data is logged to a microSD card with timestamps, displayed on an OLED screen, and can be extended for remote monitoring.
What You'll Learn
- Perform two-point calibration for pH and EC sensors for high accuracy
- Interface DS18B20 waterproof digital temperature sensors over OneWire protocol
- Design relay control logic for closed-loop dosing pump automation
- Implement real-time data logging with DS3231 RTC and SD card for analysis
Kit Contents
| Component | Quantity |
|---|---|
| Arduino Mega 2560 | x1 |
| TDS EC Meter | x1 |
| Analog pH Module | x1 |
| DS18B20 Waterproof | x2 |
| 4-ch Relay Module | x1 |
| DS3231 RTC | x1 |
| MicroSD Module | x1 |
| 0.96in OLED | x1 |
| 10kΩ Resistors | x10 |
| 100nF Caps | x15 |
| PCB Prototype Board | x2 |
| 12V Adapter | x1 |
| Soldering Iron | x1 |
| Solder Wire | x1 |
Why Buy This Kit Instead of Sourcing Parts Separately
| Factor | Sourcing Separately | Compoden Kit |
|---|---|---|
| Compatibility checks | You verify that the TDS meter, pH module, and DS18B20 sensors all operate correctly with the Arduino Mega and relay board | Pre-tested as a complete system, including voltage levels, signal conditioning, and sample code |
| Build support | Forums and scattered tutorials on individual sensor calibration | AI companion trained on this exact project, guiding two-point calibration and dosing logic |
| Time to first working build | Days of debugging sensor readings and relay chatter | Hours, with step-by-step wiring and code for automated correction |
| Shipping coordination | Multiple sellers, multiple delays | One shipment from Bengaluru in 3-5 days |
Who This Kit Is For
This kit is designed for advanced engineering students — B.Tech ECE/EEE or agricultural engineering — working on final-year projects, Smart India Hackathon challenges, or precision agriculture prototypes. It’s also suitable for serious home brewing enthusiasts and hydroponics experimenters looking to automate nutrient management with a professional-grade sensor suite.
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 inside the kit to access the AI companion trained on this brewing project. It can walk you through wiring, calibration, and code. You can also reach us on WhatsApp for human support.
Do I need to buy dosing pumps separately?
This kit includes a 4-channel relay module to control up to four pumps. The dosing pumps (peristaltic) are not included, but we provide specifications for suitable 12V DC models you can source locally.
How is the two-point pH calibration performed?
The kit uses the analog pH module with known buffer solutions (pH 4.0 and 7.0). The AI companion provides step-by-step calibration code that calculates slope and offset for accurate readings, stored in EEPROM.
Can this kit monitor multiple nutrient reservoirs?
It includes two DS18B20 sensors for dual-point temperature sensing. With the analog pH and TDS meters, you can monitor one reservoir at a time. The relay module can control dosing for one system; for multiple reservoirs, additional sensor modules would be needed.
Brewing — EC, pH and temperature calibrated with two-point method. Relay dosing pumps auto-correct nutrient solution.
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