It is a simple digital voltmeter, which can safely measure input ... The voltage divider decreases the voltage being measured to within the range of the Arduino analog inputs. Code in the Arduino ...

The Arduino ... dictates how long the digital signal stays in the on and off states. The on period, known as pulse width, is modulated (a.k.a. changed) via the code, allowing you to control ...

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[Jordan] managed to cobble together his own version of a low resolution digital camera using just ... The diode is connected to an analog input pin on an Arduino. The sensor can be pointed at ...

Morse code used to be widely used ... He started out with an Arduino and a simple microphone. He wrote a basic sketch to read the input from the microphone and output the perceived volume over ...

Arduino Leonardo, Micro or Pro Micro) Arduinos have hysteresis built into the input side of digital IO pins (as does the ATtiny85 and ATtiny861A), and so can happily be used with slowly varying inputs ...