control LEDs with code, which is one use for Arduino's outputs. This circuit builds on outputs by adding an input. Your Arduino board can be programmed to listen to electrical signals and take actions ...

[Kerry Wong] comes across the coolest hardware, and always manages to do something interesting with it. His widget du jour is an old demo board for a digital RF attenuator chip, which can pad a sig… ...

The Arduino pin goes through the switch straight to ground (LOW) via a 10k ohm resistor. When the button is pressed, the value seen by the circuit changes to +5v without a resistor (HIGH). The Arduino ...

A potentiometer does not control the gain of the signal, but it forms a voltage divider and that is why the input signal gets attenuated. So in this project, I am going to show you how to build your ...

Arduino Buzzer Frequency Controller with Push Buttons. This project demonstrates how to control the frequency of a buzzer using push buttons with an Arduino. The buzzer frequency can be increased or ...

The wiring for this project is about as easy as you’d expect: the buttons connect to the digital inputs on the Arduino, and the LEDs on the digital outputs. When the Arduino code sees the button ...

Uno is one of the series of USB Arduino boards. The Arduino Uno is a microcontroller board based on the ATmega328. It has 14 digital input/output pins (of which six can be used as PWM outputs), six ...

YouTuber Alex Coover, aka Glacial Geyser, has build an awesome Arduino-powered MIDI controller to help with his budding music career. Here's a demo.

In this project we control direction and speed of a 24v high current motor using Arduino and two relays.No power switches are needed for this circuit, just two push buttons and in Potentiometer to ...