Well the only capacitors I see specified in the instructable (I can't seem to open the schematic without paying, so I'm not going to bother) are 22pF. This doesn't sound like a value that was calculated, but just picked.
Typically you'll see 33µF or 47µF on the input and 0.1µF on the output. Spend some time doing the math and you'll see these are usually large enough, or even overkill, for more applications.