For my project, I need to boost my 5v power up 1v to 6v. What is the best way to do this?? I looked a regulators but didn't find anything that would work.
How many amps are you looking to draw?
Not sure. Probably about five amps. I have 4 6V motors and 4 6V servos.
Both the 6 volt servos and the dc motors may very well work at 5v.
I have many different motors & servos and ALL of them work over a range of voltages.
Try them out a 5V.
Joe
Yeah thanks! I've been using nine volts on them. I was just worried if they would burn up. How would I find out the amperage of all the motors and servos?
Yeah thanks! I've been using nine volts on them. I was just worried if they would burn up.
9 volts is too much. They may work a low loads but a stall at 9v may lead to an unscheduled barbeque 
How would I find out the amperage of all the motors and servos?
I stick an ammeter at the power source and run everything at once. Besure to apply some loads. For small motors & servos your fingers will suffice to apply drag. Take pacticular note of stall conditions. Stalls can dramatically increase power consumption.
If 5V doesn't work, it's generally easier (and cheaper) to regulate down than to boost-up. You'll need a switching regulator for 5 Amps. The good news is that switching regulators are nearly 100% efficient, which means 6V @ 5A out only requires (approximately) 9V @ 3.33A in. If you boost-up from 5V, you'll need about 6 Amps in.
I think as you are far exceeding the number of amps you can get from the arduino you have to look at having additional power supplies from your project. In which case you have lots of options as you are able to choose the voltage you are starting with
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voltage regulators eg drop 9v to 6v with a voltage reg.
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step down DC/DC converters
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step up DC/DC converts
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Step up/down DC/DC converters, for my self I like these the best. They convert your input voltage (within limits) to a constant output voltage. On the ones I have the output voltage is selectable and they automatical change over from step down to step up
as the input voltage changes.
Don't forget to connect your earths together.
Mark
You never mention the word battery.
DVDDoug suggests a switching regulator.
So.. have a look at something like
6V 5A 5000mA AC-DC Switching Adapter Desktop Power Supply
http://www.ebay.com/itm/6V-5A-5000mA-AC-DC-Switching-Adapter-Desktop-Power-Supply-YT-0605-PSU-2-5-2-1-/120873023134?pt=UK_Sound_Vision_Other&hash=item1c2497f69e