Home Brewing Temperature & TDS Monitor Kit with Arduino Uno

Every part needed, pre-tested for compatibility, with an AI build companion trained on this exact project. Shipped from Bengaluru in 3-5 days.

Home brewing isn't just about boiling grains—water chemistry makes or breaks the batch. This kit lets you build a handheld monitor that reads both temperature and total dissolved solids (TDS) in any water sample, then displays the values side-by-side on a clear LCD. Test tap water, RO water, mineral water, or even rainwater to see how "soft" or "hard" the water really is—exactly what brewers need to adjust mash pH and mineral content.

What You'll Build

You'll wire up an Arduino Uno with a waterproof TDS EC meter and a DS18B20 temperature probe, both submersible safely in water. The readings appear instantly on a 16x2 LCD, powered through an I2C backpack. Dip the sensors into a glass of water, press the button, and watch real-time TDS (in ppm) and temperature (in °C) flash up. Calibrate with the included standard solution and compare soft water (like rainwater, ~10-50 ppm) against hard water (like borewell water, often 300+ ppm). Enclosure ideas are shared in the build companion to turn this into a permanent brew-day gadget.

What You'll Learn

• How to interface analog (TDS) and digital one-wire (DS18B20) sensors with Arduino
• Reading and mapping sensor data to human-readable TDS ppm values using a voltage-to-conductivity formula
• Displaying multiple parameters on a character LCD via I2C, reducing pin usage
• Practical water chemistry concepts: why dissolved minerals affect brewing, plant growth, and electronics

Kit Contents

Why Buy This Kit Instead of Sourcing Parts Separately

Who This Kit Is For

Students exploring CBSE Class 11-12 physics or chemistry projects, B.Tech ECE/EEE students building sensor-based prototypes, and ATL Tinkering Lab participants will find this a practical introduction to water-quality instrumentation. Home brewing hobbyists—from IIT/NIT/BITS hostels to family kitchens—get a lasting tool to dial in their water profile. Since the build is entirely plug-and-play on a breadboard, even 10-year-olds with minimal coding experience can complete it with the AI companion's voice-guided steps.

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.