Build a Precise Digital Weighing Scale with Tare and Calibration — Arduino-Based 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.

Create your own digital weighing scale that measures up to 5 kg with gram-level accuracy. Whether you’re weighing components for a project, portioning DIY ingredients, or prototyping a smart retail solution, this kit turns the HX711 load cell amplifier and a 16x2 LCD into a fully functional scale with a calibration routine and a tactile tare button.

What You'll Build

You’ll assemble a breadboard-based scale that powers on with a splash screen, allows you to tare the empty container with a button press, and displays weight in both grams and kilograms on the LCD. The calibration mode lets you store a reference weight in EEPROM so the scale remains accurate even after power cycles.

What You'll Learn

• Interfacing a load cell and HX711 24-bit ADC for precise weight measurement
• Implementing a calibration routine using known reference weights and EEPROM storage
• Controlling an I2C LCD to display real-time measurements with auto-unit switching
• Handling multiple tactile button inputs with debounce logic to trigger tare and calibration modes

Kit Contents

Why Buy This Kit Instead of Sourcing Parts Separately

Who This Kit Is For

If you’re a Class 11–12 student tackling a CBSE investigatory project on load cell calibration, a B.Tech ECE/EEE student building a mini-project for sensor lab, or a hobbyist prototyping a smart inventory scale, this kit gives you a complete, pre-validated hardware stack to focus on coding and concepts.

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.