I recently had to build an infrared close proximity sensor that could tell if something was dropped in a parcel delivery drop box. After some searching, I ended up using a microcontroller and a piece ...
Sensor‑based currency counter using an IR sensor and a colour sensor with an Arduino and 16x2 LCD. Notes are detected as they pass, their denomination is identified from colour patterns, and the ...
Overview This project implements an IoT-based IR sensor system using ESP32, which measures distance and transmits the data to AWS IoT Core via MQTT. The system continuously reads data from the IR ...