Hardware Geek: Programmable capacitor...

Hardware Geek: Programmable capacitor...  Are you a hardware hacker?  If so, I'm sure there have been times when you needed a capacitor with some particular value that you didn't have on hand – and had to put your project on the shelf until you obtained it.  I've spent some time with a calculator in the components aisle at the local electronics store, desperately trying series/parallel combinations of capacitors they happened to have in stock to come up with the value I needed.

I never thought of making a “programmable” capacitor, but now that I see it, the idea seems obvious.  This Kickstarter project is just 32 capacitors that can be individually switched in or out of a parallel combination.  The sum of the “on” capacitors is the value of the programmable capacitor.  The board has values down to 0.1pf, which I suspect is swamped by the parasitic capacitance on the board (and wiring), but never mind that – for the higher values, I can think of many times when this would have been a very handy beast to have around!  I've made my $29 pledge...