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So, I need to drop 12v from my moped to 8v to power this LED light.
I was thinking diodes in series but that would take a lot of diodes and they would get really hot.
Then I thought of an LM7808, but that can only handle 1A, the light will take 10-12 watts at 8v which is 1.25 to 1.5A, so that wont work unless I run 2 in parallel, but I don't know if you can do that.
Somebody said I could use a 7808 with a 2n3055 transistor, but I have no clue how to design a circuit to utilize this.
Here is a link to the light:
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/diy/, how would I go about changing the liquid in a drinking fountain? I opened one up (a wall mounted one in a dorm) and noticed that it's connected to a water source, so I guess my question is whether or not that source of water is pressurized, or if it becomes pressurized somewhere else in the system?
Would it be as simple as say, running a tube into a bottle and having the machine pump it up for me, or would I need a pressurized source of said liquid?
I'm thinking something like the hawaiian punch fountain that was seen in the movie Mr. Deeds
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So here's a story; I have a broken samsung galaxy SI. However, when I say broken, I mean to say that the only thing not working is the functional buttons (the home/back/etc. tabs at the bottom).
So, it still turns on, and works, however, you can never back space. Apparently there is a tiny filament that connects them to the rest of the device, and it was damaged and would be needlessly expensive to fix. So, I thought to myself... I have a phone, with 512mb of ram, and a 1 GHz Cortex-A8. Why, I have a raspberry pi!
So, here's what I wonder; Is there anyway I can completely get rid of the mobile operating system, and insert my own? Maybe hook it up to a screen via micro-hdmi to hdmi. What technical challenges are in my way?