Guest thefishman65 November 28, 2011 November 28, 2011 IMHO don't worry about dimming yet. Bypass that with a constant voltage and figure out why the LEDs don't light.
hypertech November 28, 2011 November 28, 2011 If you decide to come by on Saturday, I have a signal generator that can be used for testing. Its been a while since I've brought it out, but I think it has standard settings for a pulse width modulated signal. It'll do a square wave for sure so at a minimum we could test 50% and 100%.
Chad November 28, 2011 November 28, 2011 IMHO don't worry about dimming yet. Bypass that with a constant voltage and figure out why the LEDs don't light. I agree with this. A 10Vdc power supply will do the trick.
Guest thefishman65 November 28, 2011 November 28, 2011 Just turn the pot down or use something that can take 1.3 amps. FYI: You will eventually have to turn them down for PWM control.
jason the filter freak November 29, 2011 Author November 29, 2011 So if I use a ohm meter to test each LED, should I see flow/low resistance + to -, or - to + its neg to pos right...?
Guest thefishman65 November 29, 2011 November 29, 2011 No, it should light up just barely with red on plus and black on minus.
Guest thefishman65 December 6, 2011 December 6, 2011 He had a small wiring problem and was too lazy to work on it yesterday. I mean he had the day off and everything. Obviously I am not the only one hanging on his results and in utter panic because he won't get it done. However, I feel much better knowing I am not the only one
OldReefer December 11, 2011 December 11, 2011 I had this happen once. It droveme nuts until I realized I had flipped one of the LEDs around accidentally. It is easy to do, and kills the whole series when you wire one "+ to +".
hypertech December 11, 2011 December 11, 2011 (edited) That'll do it. LEDs are Light Emitting Diodes. A diode is the electronic equivalent of a check valve. Current only flows one way through a diode (yeah yeah, I know this isn't completely accurate and that they will flow backwards, but for the most part, this is true). If you hook it up backwards, no current can flow and nothing in the string will light because that is no path for current. Edited December 11, 2011 by hypertech
sheac12 December 13, 2011 December 13, 2011 (edited) Jason, If you are still having problems, I am not too far from you in, I am in Columbia too. If you still need help PM me and we can work out some time this week/weekend. Colin PS - be good to utilize the degree's in Electrical Engineering I can also help you out with the dimming utilizing the reef angle. Edited December 13, 2011 by sheac12
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