Gosh, Sean.

I don't mean to be rude but I'd think that 5 minutes with a power 
supply or 9V battery and a 1k resistor would give you that information.

Its really easy!  Just clip one side of the battery to a corner 
pin.  Brush the resistor lead (other side of the resistor goes to the 
other side of the battery) along all of the other pins.

If nothing lights up (probably won't), move the battery clip to the 
next pin along and repeat the brushing procedure.

Fairly quickly, a LED segment will light.  Keep track of what lights 
up with which pin.

You will find that it takes not much more than 5 minutes to identify 
all of the anodes and cathodes.  You can then figure out if the 
display is common anode or common cathode.

dwayne


At 09:25 PM 11/30/2009, Sean Breheny wrote:
>Hi all,
>
>I have two 7-digit multiplexed LED display modules that I'd like to
>use for a project but I do not know the pinout. I tried some Google
>searches but couldn't find any data. The part is marked
>"LS-2072YKB-93R05" Can anyone point me in the right direction?
>
>Thanks,
>
>Sean


-- 
Dwayne Reid   <dwayner@planet.eon.net>
Trinity Electronics Systems Ltd    Edmonton, AB, CANADA
(780) 489-3199 voice          (780) 487-6397 fax
www.trinity-electronics.com
Custom Electronics Design and Manufacturing

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