A ping pong ball is used to make a reasonable LED diffuser by drilling a hole and inserting the LED which could make a nice system indicator using an RGB LED. The device is easy to construct due to ...
Ping-pong balls have many uses: apart from playing table tennis, they have been used for countless art projects, science experiments, and even to raise ships from the bottom of the ocean. As it turns ...
A few years ago [Brian McCafferty] created a nice big RGB LED panel in a poster frame that aimed to be easy to move, program, and display. We’d like to draw particular attention to one of his ...
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