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Old 05-06-2008, 12:46 AM   #9 (permalink)
dcb
needs more cowbell
 
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Update, I put a board together to hold the extra components (3 transistors, misc resistors, etc) no luck with the brightness control so far
Edit: lowering the 100k resistor to 430 ohms fixed that
Edit: I looked up the 2n3906, and it looks like extreme limit of base current would have the the minimum value for the resistor at 86 ohms. 100 ohms would give you a little safety cushion.




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Last edited by dcb; 05-06-2008 at 10:45 AM..
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