by PaulStoffregen.

2 layer board of 3.17x0.50 inches (80.59x12.78 mm).
Shared on July 30th, 2013 21:23.

Big 7-Segment driver. A ‘595 shift register lets you chain any number of these to build a large display.

Perfect for keeping Open Mic talks at hackerspaces on time!

(photos, assembly instructions, Arduino code)

For the check 7-segment digits, search Ebay for “3inch 7 segment Red LED display common anode”.

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