>>In practice, I found that 4 of the green LEDs provided enough illumination, if they were put above the compass card. The problem was that I could not get them to go with a 9 volt battery. 4*2.1= 8.4 <9 and the circuit should work without a resistor, but it did not. Maybe low battery voltage was the problem, they lit with a 12 volt battery. I tried wiring the green LEDs in a mix of parallel and series and managed in one configuration to get no illumination and when I reduced the size of the resistor I toasted the LEDs. Dana Dickson >> I was wondering how bright the compass LED had to be; from what you say, it looks like about 2400 mcd. Did you have a series resistor in each leg of the circuit? Chuck Holst *************************************************************************** PaddleWise Paddling Mailing List Submissions: paddlewise_at_lists.intelenet.net Subscriptions: paddlewise-request_at_lists.intelenet.net Website: http://www.paddlewise.net/ ***************************************************************************
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