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Old 06-27-2005, 02:38 PM   #21
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ok i'll have to check them out tonight. one more ? what size wire should i get?
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Old 06-27-2005, 04:20 PM   #22
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also do those light diffusers at HD block much light?
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Old 06-27-2005, 06:01 PM   #23
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awg 20 should be fine.

diffusers - are you talking about eggcrates, or those plastic panels that are used for flourascent lighting? if your talking about the panels they do block a little, but they do really remove the spot light effect very well,

if you didn't want to buy a roll of wire, what i usually do, is go to home depot, and go find their ethernet cable, and usually get about 10ft or so, its 34cents a foot, and in the ethernet cable there are 6 wires, so you get alot of wire, really cheap.
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Old 06-27-2005, 11:55 PM   #24
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RS diidnt have what i needed, digikey has a bunch of differnt kinds of pots, will they all work?
sorry for all the questions, there sure is alot of stuff on thier site.
http://rocky.digikey.com/WebLib/Cherry/Web%20Data/LR%20SERIES.pdf
hows that for a switch?
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Old 06-28-2005, 01:03 AM   #25
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and does it matter what wattage the resistors are?
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Old 06-28-2005, 02:02 AM   #26
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a switch is a switch, and as long as you don't exceed its amp/voltage (usually max ratings for switches are 120v-240v / 2 - 20amps) ratings you can use it with no problems, that switch seems a bit overkill to me, having quick connectors but yeah it would work just fine.

wattage does play a role, but i did the the math a few days ago and the wattage generated by each led is under 1/4 watt (250mW) and the most common resistor wattages are 1/4w (250mW) or 1/2 (500mW) so it doesn't really make a difference. using a larger wattage resistor won't harm anything, and it does offer a small cushion of protection if something unforeable was to occur. my final opinion use
1/2watt resistor.

and what kind of radio shacks do you have maryland anyway? they don't have a broad selection of switches, resistors or anything good. my 5 local stores are stocked to the gills with stuff, and its kind of bad i have a better idea where stuff is in the store than most employees.
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Old 06-28-2005, 02:09 AM   #27
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or they just have a few of everything. i dont think they really sell any of that stuff
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Old 06-28-2005, 02:36 AM   #28
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would this work for a pot? 3386F-253-ND POT 25K OHM 3/8" SQ CERM SL ST 0 1.29000
http://www.bourns.com/pdf/3386.pdf
and these are what i have for resistors
PPC35.7XCT-ND RES 35.7 OHM METAL FILM .50W 1% 0 0.19400

do you think i need a diffuser with 60 degree leds?
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Old 06-28-2005, 01:11 PM   #29
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http://www.radioshack.com/product.as...Fid=271%2D1716

something like this would work better, you just use your hands to turn up/down the pot, with the one in your link you will have to use a screwdriver which can be a pain in the butt.

the resistor will be fine, however if you give me your voltage source i will double check your math, just to be on the safe side.

you probably won't need a diffuser, but you might want it. i would suggest building the moonlight setup trying it on your tank, and if you don't like it, try the diffuser.
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Old 06-28-2005, 01:40 PM   #30
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4v
i'll use this for a pot
CT2255-ND POT 25K OHM 1/8W CARB HORIZ
http://rocky.digikey.com/WebLib/CTS/...6%20Series.pdf
what size knob do i need for that thing?
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