This is an easy tutorial showing how you can control the brightness of an LED or adjust the speed of a DC fan using Arduino Board, a small BC547 transistor and a potentiometer. In my example the whole ...

Rather than control the voltage, it’s better to control the current passing through the LED directly. The easiest thing to do is add a potentiometer ... be used with an Arduino and I strongly ...

Also, this multiplexing technique turns the massive amount of microcontroller pins necessary to control a display into just eleven or twelve (in place of thirty-two)! The LED ... of the Arduino is ...

Arduino-fanciers Oomlout have put together a neat control box for the popular prototyping board, complete with five potentiometers and three switches. There's also a software app that can ...

Let it hit your red LED and you’ve lost a point ... Inside the cool laser-cut box is an Arduino Uno and a 9V battery, plus a current-limiting resistor and the all-important buzzer.

Remember those cheap remote control jammer toys that you could ... To get started on the project, you will need the requisite Arduino board, an Infrared LED, a cheap Infrared sensor, a USB cable ...

The SW44515 potentiometer switch provides both rotary and push-on/push-off functionality plus LED backlighting. The DPDT switch enables users to specify a value so, at the push of a button ...