Installing LED questions

[LEWETHETIGER73]

Well I have a shoe box full of LED's and I wanna hook them up to my RC truck. Just wanna find out how I can do this with disposable batteries or is there an easier way. The LED's were intended for a regular car. Thanks for any help I will get.

[kornholio788]

LCD's or LED's?

LCD as in tvs?

[LEWETHETIGER73]

HA !! Yeah I was pretty tired last night and It did look wrong. I meant to say LED'S
Thanks

[LEWETHETIGER73]

I suppose there is a difference huh :alcoholic

Light Emitting Diodes
Liquid Crystal Display

:loser

[Cryptic]

fixed subject for ya

[TheRX7Project]

Do you know what voltage they are rated at?

You should be able to go to American Science and Surplus and pick up a couple battery holders and wire the LED's directly to them.

[BoosTT]

Yes, put the batterys in series to get them up to 12v. AA's are 1.5v each, so you'll need 8. With AA's you should be able to power quite a few LED's. I can't give you an number, because all leds are different. I would guess around 15.

[lilws6]

what color are they they should be any where between 3 and 4 volt led's are they 5mm? you can hook them up to a 9 volt battery with 3 in series pretty easy. then run them parralel and wam bam leds on truck i had two running of my esc on my car it only put out 6v so i could only run two in series. i say 9v and a bunch would be perfect. i can hook you up with about 1000 blue led's if you need some lol i have extra

[DocDave]

If these are plain LEDs (no built in resistors) they will require a current limiting resistor. An LED will light with a very small amount of voltage, just be sure to limit the forward current with a resistor and you should be good. The rule of thumb I typically use is 5V = 330 Ohm, 12V = 1K Ohm, 24V = 2K Ohm.

[TheRX7Project]

Or wire them in series and that will eat up the voltage. I.E. if they're 4v, wire up 2 in a series and hook it up to 5x 1.5V batteries in series.

[LEWETHETIGER73]

Wow, whole lotta things to try. These are about 5mm in size. I have hooked them up to my other car before and they worked fine with out a resistor or anything like that. Thanks for the tips.

[lordairgtar]

Don't forget that diodes are directional. Keep in mind the + and - sides. If you wire them wrong, they won't light.

[lilws6]

in a 9 volt you should be able to get 3 in series and have them light up bright with out a resistor best bet