We set the potentiometer pin as 0 (A0 on the Arduino Uno board), the CONTROL variable is the voltage that is used to cotrol the led brightness of the speed of the fan. In the setup() function the ...

This DIY gas leakage detector is designed for educational and basic monitoring purposes. For critical safety applications, ...

This is just a fun Arduino project that uses leds connected in circle as a ring to produce a rotation effect. ... You will need an Arduino board, a potentiometer ... (#21). Then store this value ...

The biggest use-case scenario is when the function of this knob is software-defined, and/or must be adjustable from multiple locations (e.g. a remote control panel). Putting the LEDs around the ...

He ended up using multiple 74138 decoder/multiplexer IC’s to control the LED’s. Since the columns have inverted outputs, he couldn’t just hook them straight up to the LED’s.