big7seg

By PaulStoffregen

2 layer board of 3.17 x 0.50 inches (80.6 x 12.8 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!

http://www.dorkbotpdx.org/blog/paul/big_7segment_countdown_timer

(photos, assembly instructions, Arduino code)

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


big7seg

By PaulStoffregen

2 layer board of 3.17 x 0.50 inches (80.6 x 12.8 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!

http://www.dorkbotpdx.org/blog/paul/big_7segment_countdown_timer

(photos, assembly instructions, Arduino code)

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