In the microcontroller era today, Arduino ... level is below a threshold value. Here an LDR (Light Dependent Resistor) is used to measure the light level. The alarm system is triggered when a “Logic ...

The hardware is consists of an Arduino microcontroller (here an Arduino Uno R3) and a pre-wired soil moisture sensor module. The soil moisture sensor module , built around the LM393 comparator, gives ...

A hall-effect sensor is a circuit ... to fabricate a professional-level sensor at a fraction of the cost. This build is essentially a solution for anyone needing a potentiometer that’s easier ...

hacked it in with an Arduino. The video does a wonderful job going into the details, but essentially by using an oxygen sensor with finer resolution (wide-band) and then outputting the appropriate ...

CMOS-based digital potentiometers typically cannot be u A circuit used to control the level of a video signal should have a 3-dB cutoff frequency of greater than 5 MHz for a television application ...