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We’ve posted a lot of 555 timer chip projects for blinking LEDs, but I really like this one, it’s like a LED player piano…Ten Men writes – “I scribbled the can with a rubber dremel wheel to remove the paint where I wanted the contacts to close the circuit, lighting the LED’s. The contacts are connected to the terminal block, and the LAN cables are connected to the other side. I jumpered the negative connection to every other block, with the positives coming in the gaps.” [via] – Link.


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Phillip Torrone

Editor at large – Make magazine. Creative director – Adafruit Industries, contributing editor – Popular Science. Previously: Founded – Hack-a-Day, how-to editor – Engadget, Director of product development – Fallon Worldwide, Technology Director – Braincraft.

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