Home Brewing Temperature Monitor Pro Kit with Arduino Uno + Relay
Professional-Grade Home Brewing Temperature Control with Arduino Uno and Relay
Every part needed, pre-tested for compatibility, with an AI build companion trained on this exact project. Shipped from Bengaluru in 3-5 days.
For home brewers, maintaining a precise mash temperature within half a degree can make the difference between a crisp, clean lager and unintended esters. This kit lets you build a PID-driven temperature controller that reads a DS18B20 probe and switches a relay to drive a heating element, holding your setpoint with commercial-grade stability. No more checking thermometers every fifteen minutes — your beer ferments exactly as the recipe intends.
What You'll Build
You'll assemble a complete, standalone temperature monitor that displays current and target temperatures on a 16x2 LCD, accepts input from tactile buttons, and controls a relay to switch a heating or cooling device. Once calibrated, it maintains your brewing vessel within 0.5°C of the setpoint using a PID loop you'll tune yourself. The unit runs on a 9V battery or wall adapter, and the probe is waterproof for direct immersion in mash or fermenter.
What You'll Learn
- Wiring and reading a DS18B20 digital temperature sensor over OneWire
- Implementing a PID control algorithm in Arduino to maintain a precise setpoint
- Driving a 5V relay safely to switch AC loads with back-EMF protection
- Displaying sensor data and menu options on a 16x2 LCD with I2C backpack
Kit Contents
| Component | Quantity |
|---|---|
| Arduino Uno R3 | 1 |
| DS18B20 Probe | 1 |
| 5V Relay Module | 1 |
| 16x2 LCD | 1 |
| I2C Backpack | 1 |
| Tactile Button | 2 |
| 4.7kΩ Resistors | 5 |
| 1N4007 Diode | 3 |
| 100nF Caps | 5 |
| 400-pt Breadboard | 1 |
| M-M Wires | 20 |
| 9V Battery Snap | 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 suits CBSE Class 11–12 students building a practical physics or electronics project, B.Tech ECE/EEE students implementing control systems for their mini-project, and ATL Tinkering Lab members exploring sensor-driven automation. It also fits home brewing enthusiasts in India who want to nail their fermentation temperature profiles without buying a commercial PID controller.
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 the AI build companion, which has been trained step-by-step on this project. You can also reach us on WhatsApp for human backup.
Can this kit control a 1000W heating element directly?
The 5V relay module can switch up to 10A at 250V AC, so a 1000W element (about 4.3A at 230V) is well within limits, but always ensure the relay contacts are rated for your load.
Does it work with cooling devices like a fermentation fridge?
Yes, the PID algorithm can drive a relay that switches a compressor or Peltier-based cooler. You just wire the relay in series with the cooling device and invert the logic in the code.
Is the DS18B20 probe safe to immerse in beer?
The probe is stainless steel and waterproof, so it can be sanitized and immersed directly into the mash or fermenter.
Brewing — DS18B20 feeds PID algorithm controlling relay heater to hold exact setpoint within 0.5°C.
What's in this kit
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