The “void setup()” section only runs one time, at setup, when it sets the pin with an LED connected to it (pin 13) as an output, meaning the pin controls the light instead of receiving input ...

Running out of GPIO pins? Learn how to connect multiple buttons to just one Arduino pin using clever wiring and resistor ...

You can read the state of a button using Arduino and a few lines of code. The actual state is shown in the Serial Monitor window as 0 or 1, 0 meaning the button is not pressed and 1 that the button is ...

This is a random oscillogram from D5 of Arduino Uno. During experiments, I powered my Arduino setup with a Li-ion 9V/600mAh USB battery. Quick note: Arduino UNO has three timers – D5-D6 on Timer 0 ...

Los Angeles-based Strange Electronic has launched a Kickstarter for a new kind of Eurorack synth module that doesn’t make any sound at all. Called Lightstorm, it controls full-spectrum LED ...

There was a point in time, excruciatingly brief, in which desktop computers often had a large “TURBO” button on their front panel. Some even featured an LED display that would indicate … ...

Sure, the physical build itself looks great, but it’s what [Michael] did with the firmware that impresses us the most. He’s using an Arduino Mega to drive the 7x7x7 cube and manages to … ...