Here is a simple Arduino Camping Light project. In this design, only one push button switch is used to control the light output ... OUTPUT); pinMode(switchPin, INPUT); digitalWrite(switchPin, HIGH); / ...

The isolated analog input module presented ... was conducted with a green LED (with its current limiter resistor) in lieu of the optocoupler component, wired to observe what’s actually taking place ...

Because the switches are analog, they are bidirectional. That is, it isn’t really connecting one output to 32 inputs. It is more like a 32-position switch that connects a single pin out of 32 to ...

Input devices that can handle rough and tumble environments aren’t nearly as varied as their more fragile siblings. [Alastair Aitchison] has devised a brilliant way of detecting inputs from ...

which is attached by copper threads to an Arduino Nano’s analog input pin. When a finger is curled, the light is then switched on and off again when straightened. While an LED is interesting ...