The microcontroller-based concept was chosen because I wanted to scale the sensor system later to suit other applications. Here is the diagram of my Arduino infrared close ... current (and hence the ...

The soil moisture sensor module , built around the LM393 comparator, gives an active-low (L) level ... of the Arduino. Here is the test code that indicates the soil wet/dry conditions using just two ...

You can also add audible indicators ... is an easy Arduino project for beginners to get into. It uses an ultrasonic sensor, which is placed inside the bin, to detect the trash level.

Often, the only liquid level indicator you need is your eyes, such as when looking at your cold beverage on a summer’s day. Other times, though, it’s useful to have some kind of indicator ...

Oh sure, it’s pretty cool to display your current gear selection on a little LCD screen using an Arduino ... build since he chose to use analog Hall sensors to detect the shift lever position ...

Makers, hobbyists and Arduino enthusiasts searching ... The finish spirit level and measure features an ultrasonic sensor for measuring the distance to the nearest object, an accelerometer for ...