[ARC5] P.S. Programmable Oscillators.

[David Stinson]

P.S. Here's one of the little DC-DC converters.
I use these things for lots of stuff.
Had a few little birdies but nothing that caused
me any trouble.  Here's one; there are many
available and prices vary all over.
Some are less than $2.

http://www.ebay.com/itm/261078380110

They make them in "Boost" models as well.
They're ground/negative common in and out,
so not for applications where you need isolation.

If you'd rather use a linear regulator:

http://www.ebay.com/itm/361396441422

Used these with good results as well.

73 Dave S.