This high-frequency signal is crucial for detecting metal objects, as it changes when the detector passes over a metallic object. The Arduino plays a pivotal role in this setup. It processes the ...

[Dzl] and his rather serious looking son are metal detector enthusiasts ... is constantly measured by the Arduino. When metal enters the coil it alters the frequency, which is immediately picked ...

Effective water management involves supplying water according to the real requirement, and thus measuring water is very essential step in water management systems. There are many water flow ...

This build comes to us from [mircemk] who built this metal detector around an Arduino Nano and uses a ... the coils and determining their resonant frequency is the most important part of this ...

Here is the diagram of my Arduino infrared close proximity sensor. As you can see ... receiver IR1 is only sensitive to light modulated with a specific (38kHz) carrier frequency, so it is insensitive ...

Computer engineer Thiery Guennou based in France has created a new Arduino compatible precision frequency counter 5 or 120 MHz. The inspiration behind the Arduino board was to build an open ...