Create a 6-Zone Capacitive Proximity Detector Using 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.

From contactless gesture recognition to touch-free object detection, capacitive proximity sensing drives modern interface design. This advanced kit places six copper pads at calibrated distances from an MPR121 touch controller, turning subtle capacitance changes into six distinct proximity zones. An OLED display shows your hand’s zone in real time — no physical contact, no complex calibration.

What You'll Build

You will construct a linear proximity detector that interprets your hand’s position along a graded scale of copper electrodes. As your palm approaches the sensor array, the OLED transitions through zones 1 to 6, giving instant visual feedback of how near or far you are. The finished assembly distinguishes a light hover from a close approach and a direct touch — a robust foundation for touchless human-machine interfaces, interactive art, and short-range safety systems.

What You'll Learn

• Calibrate MPR121 electrode sensitivity and compensate for parasitic capacitance in real circuit layouts
• Integrate I2C communication between an Arduino Uno, MPR121 touch IC, and SSD1306 OLED display
• Write firmware logic that translates raw capacitance values into meaningful proximity zone thresholds
• Prototype a repeatable sensor strip using soldered copper pads on a PCB, ready for enclosure and field testing

Kit Contents

Why Buy This Kit Instead of Sourcing Parts Separately

Who This Kit Is For

This kit is built for B.Tech ECE and EEE students prototyping touchless HMIs for their final‑year major project or Smart India Hackathon entry. It suits research scholars at IIT, NIT, VIT, or BITS exploring capacitive sensing techniques, as well as advanced hobbyists who want to move beyond basic touch switches into spatial interaction. If you have solid Arduino coding experience and are comfortable with soldering, you will finish this build confidently within a day.

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.

Choose your assembly option:

• Soldering Kit — 25W soldering iron, 60/40 solder wire, flux, and small perfboard for permanent assembly.
• Breadboard Combo — 800-point full-size breadboard with 65-piece jumper wire pack for solderless prototyping.