BLE Proximity Badge Kit with ESP32 – Build a Wireless Attendance Logger in 2 Hours

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

This kit turns two ESP32 boards into a real-world BLE proximity badge system. One board becomes a compact beacon you can carry in a pocket or wear on a lanyard, advertising a customizable UUID. The second board acts as a base station that lights up an LED the moment it detects the beacon within range. It’s a brilliant way to demonstrate contact tracing, automated attendance, or child proximity alerts while learning core IoT concepts.

What You'll Build

You’ll wire up two independent circuits on breadboards: a battery-powered beacon (simulated with USB power) that constantly broadcasts its presence, and a receiver that scans for that exact signal. When the beacon comes within a few meters, the receiver’s LED blinks, proving the connection