The 16 Edge LED TinyShield allows some cool and easy LED indications using only five I/O signals. The 16 LEDs are mounted around the outside of the board, and can easily be seen even when the LED board is in the middle of a TinyShield stackup. The LEDs are arranged using Charlieplexing, which is a technique to allow for control of multiple LEDs using fewer I/O signals. Available with Red, Green and Amber LED color options.
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If the top connector is not needed, there is also the Circle LED TinyShield which has LEDs that circle the entire board.
The LEDs are hooked up using Charlieplexing, a technique for driving many LEDs with only a few IO signals. See the tutorial to learn more about this and use our free library to control these easily.