A dust sensor is an optical electronic system to detect fine particles such ... For a quick test, I devised an Arduino Uno setup by adding the circuitry shown before (without the optional potential ...

Here is the diagram of my Arduino infrared close proximity sensor. As you can see ... and infrared receiver should be mounted side by side as in the case of the active-optical reflectance-based ...

This seems to just egg people on to reproduce it using other technologies than the optical pickup system the ... Using the SS49E linear Hall effect sensor in pairs on four sides of a square ...

[Fearless Night]’s optical theremin project takes advantage ... instrument with software that can be modified using the Arduino IDE to take it places the original Theremin design could never ...