LM35 Arduino Kit: Build a Digital Thermometer with Real-Time LCD Display

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 a tiny analog sensor into a crisp digital readout of your room's temperature. This kit puts the classic LM35 at the heart of a live monitoring system-you'll wire it to an Arduino Uno, convert its analog voltage into meaningful Celsius values, and display them instantly on a 16x2 LCD. It's the hands-on way to grasp how microcontrollers read real-world signals and turn them into data you can see.

What You'll Build

You'll create a portable temperature monitor that refreshes every few hundred milliseconds. The LM35 sensor measures ambient heat as a voltage, the Arduino's ADC translates that into a digital number, and your code converts it to degrees Celsius and then outputs it clearly to an I2C-connected LCD screen. When you're done, you'll have a standalone device powered by a 9V battery that you can calibrate against a known standard and carry anywhere to check hot and cold spots.

What You'll Learn

• Analog-to-digital conversion using Arduino's 10-bit ADC
• Connecting and calibrating an LM35 analog temperature sensor for accurate readings
• Interfacing a 16x2 LCD via an I2C backpack to reduce wiring complexity
• Reading serial monitor outputs to debug and verify sensor performance

Kit Contents

Why Buy This Kit Instead of Sourcing Parts Separately

Who This Kit Is For

Ideal for school students (ages 10+) who have completed a basic Arduino blink sketch and are ready for a real sensor project. CBSE Class 11-12 students will recognize this as a core practical-interfacing an analog sensor and displaying data. ATL Tinkering Labs and STEM clubs can use it for introductory sensor workshops, and first-year B.Tech ECE students can build it as a quick calibration lab exercise.

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.