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 ... as a voltage divider ...

Putting a custom designed electronic lock on your space seems like a geek right of passage. For our latest workspace, we decided to skip the boring numbered keypad and build a custom RGB backlit ...

It uses Arduino Duemilanove microcontroller board. Two wires placed in the soil pot form a variable resistor ... I love all about electronics, circuit diagrams and crazy projects that can help us ...