Arduino Uno TFT Pie Chart Sensor Share Kit — Turn Three Sensor Readings into a Colourful 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.

Imagine turning three knobs and watching a colourful pie chart on a tiny screen update live, showing exactly how much each setting contributes. This kit brings data to life by letting you build a real-time sensor share visualizer with just an Arduino Uno and a TFT display. You’ll wire up three potentiometers that act as analogue sensors, and the Arduino draws a pie chart where each slice’s size matches that sensor’s proportion of the total reading—perfect for understanding shares, ratios, and visual feedback.

What You'll Build

You’ll assemble a circuit on a breadboard using three 10kΩ potentiometers connected to the Arduino’s analogue inputs. The code reads each value, scales them so their sum represents 100%, and uses the TFT ST7735 library to draw filled arcs and a legend on the 1.8-inch colour display. As you twist the knobs, the pie slices instantly adjust, giving you a dynamic feel for how sensor data can be transformed into a meaningful picture. Everything runs off a 9V battery, making it portable for demos.

What You'll Learn

• Read analogue voltages from potentiometers using Arduino’s ADC and understand 0–1023 range mapping
• Convert raw ADC values to percentage shares and handle edge cases where values become zero
• Use the TFT ST7735 display library to draw filled circular segments, text, and colour coding
• Translate mathematical proportions into visual elements and debug sensor-to-display logic

Kit Contents

Why Buy This Kit Instead of Sourcing Parts Separately

Who This Kit Is For

Young tinkerers exploring how numbers turn into pictures. Perfect for CBSE Class 6–10 students learning data handling and visual arts integration, ATL Tinkering Lab activities, or any curious mind above age 5 who wants to see their sensor readings in a fun, shareable format. Also ideal for B.Tech first-year projects introducing microcontroller-based data visualization, or as a rapid prototype for Smart India Hackathon challenges involving sensor dashboards. With adult supervision, even a 5-year-old can twist knobs and watch the pie move, while older builders dive into the code.

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.