These simple components are essential for us to get started on building our own Arduino speed sensor system. Arduino Speed Detector Circuit Diagram. A simple breadboard based circuit diagram is shown ...

It’s a fairly simple project, too: just hook an Arduino Uno up to a motion sensor and an electronic switch called a relay, then plug in your fan, and you’re good to go.

Move everything off the breadboard and wire up a permanent solution; Complete documentation and images; Use and LED to indicate setup() mode until the PIR has warmed up (hardware dependent mod) Create ...

At first, the state of the PIR sensor is set to LOW. it means that no motion is detected. When a motion will be detected by the PIR sensor, it will send a signal to the microcontroller. The ...