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Author Topic: roller coaster help.  (Read 1256 times)

Offline zbblanton

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roller coaster help.
« on: April 13, 2009, 05:42:37 PM »
ok so my school is going to a roller coaster contest, im doing the electronic part i want it to light up will lots of leds and also hav like a one neon light that is about a foot and 3inches and runs off 12volts, what i need help with is finding a good cheap battery that can run atleast 12v.

it need to be sorta small too, but can last alittle  bit
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Offline SN!P3R

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Re: roller coaster help.
« Reply #1 on: April 13, 2009, 05:52:39 PM »
car battery, or those big rectangular batteries (forget the name), or just use a wall outlet
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Offline zbblanton

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Re: roller coaster help.
« Reply #2 on: April 13, 2009, 06:02:36 PM »
car battery is too big, and i wish i could use a outlet but i dont think your aloowed
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Offline ra1n

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Re: roller coaster help.
« Reply #3 on: April 13, 2009, 06:30:30 PM »
« Last Edit: April 13, 2009, 06:55:06 PM by ra1n »
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Offline FreeK

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Re: roller coaster help.
« Reply #4 on: April 13, 2009, 06:32:43 PM »
Quote from: SN!P3R on April 13, 2009, 05:52:39 PM
those big rectangular batteries

9V batteries? i dont think those are 12V
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Offline PhenomenalDesigns

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Re: roller coaster help.
« Reply #5 on: April 14, 2009, 01:14:59 AM »


Get some A23 batterys, they are 12v, a bit hard to find though, and just get a few and put them in parrelell
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Offline Timmy

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Re: roller coaster help.
« Reply #6 on: April 14, 2009, 02:57:38 AM »
they're actually very much around, hardware store's have them....petrol stations, security places.....etc
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Offline 802Chives

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Re: roller coaster help.
« Reply #7 on: April 14, 2009, 08:55:07 AM »
Get a 12V lead acid motocycle/lawnmower battery.  just cuz there 12V doesnt mean they have to be big :winker: I use some at work that are like 5"X5"X3".  Also could hijack a 12V battery of that size out of a broken computer UPS supply.  I bought a little trickle charger for a 12V battery for $20 the other day.

you could also design it for 9V and use a lantern battery.
« Last Edit: April 14, 2009, 08:56:47 AM by 802Chives »
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