May 302010

During Hackday I worked on a display for the Stabby ID.

I have six or so HDSP 2111 units lying around. They also come in green and red led models.

Read on for Schematic and Demo Arduino Source


1 HDSP 211x LED Display
1 SN74LS595N Low Current Shift Register
1 Arduino compatible board
1 current reference capacitor ( just for safety )



 Posted by at 7:53 pm

  4 Responses to “Working with the HDSP 2111”

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  1. dox_dropped();

  2. Just a quick note: I have one of these displays. Powering it with 5V made it go hot and unstable with the schematics above. Connecting the 3.3V out instead of 5V made it work fine.

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