Similarly, one BS170 mosfet was used in my prototype to drive the 3 x White LEDs strip. This part number (and ofcourse the LED type) is not very critical. If you want to use a bi-polar transistor, don ...

A 2N2222 NPN transistor is responsible for connecting the ground rail of the LED strips mounted under each shelf. The base of that transistor is held high with a pull-up resistor.

[Schuyler Sowa] has been hard at work on his own version of LED strip Pong. We’d say his work has really paid off. The game is robust and full of features. Unlike the original Pong video game… ...