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OSH Park
DerKnopf LED ring
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DerKnopf LED ring
by![](../../gravatar.com/avatar/57e8f5244c0ebb2139a5cd7abd9ca766ea98.jpeg?s=16)
2
layer board of
1.19x1.26
inches
(30.20x32.00
mm).
Shared on
November 6th, 2016 21:32.
IR receiver and charlieplexed LED ring around volume control. Used in https://github.com/hzeller/DerKnopf but can be useful for other things as well. 6-wire charlieplexing for 30 LEDs, lined up exactly with 1/32 turn for 32-detent encoder; two spacing.