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A low-cost RFID-card reader with LCD display to monitor and allow machine usage in a Fab Lab environment (e.g. 3D printers, lasers, CNC). This repository includes Firmware + Hardware projects You can ...
A Simple Beginner Arduino Code for sensing the presence of humans using PIR Sensor with a time limit. Here, We have used a 20 by 4 LCD Display and a PIR Sensor.
Build a Speed Sensor using Arduino with IR speed sensors to accurately measure the speed of moving objects. This tutorial covers circuit design, sensor calibration, speed calculations, and optimized ...