Posted in Arduino Hacks, Musical Hacks Tagged blue pill, optical sensor, optical theremin, stm32, theremin Optical Sensor Keeps Eye On Wandering Saw Blade May 24, 2021 by Tom Nardi 17 Comments ...

Here is a design concept for a cheap single point optical liquid sensor that can detect the presence or absence of certain colored liquids inside a transparent tube. It can be tailored to output a ...

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

It should come as no surprise your optical mouse contains a very tiny, very low resolution camera. [Franci] decided to take apart one of his old mice and turn that tiny optical sensor into a webcam… ...