"And in particular, don't be deterred from applying to Y
Combinator with a hardware idea, because we're especially
interested in hardware startups."
How are you planning on funding hardware startups? From your site: "Usually $11,000 + $3000 per founder. So $17,000 for two
founders, $20,000 for three or more. Occasionally we
invest more. The goal is usually to give you enough
money to build an impressive prototype or version 1,
which you can then use to get further funding."
A real hardware startup would require at least an order of magnitude more money than this. Unless they walk in with all the required tools, you could burn $20K just in software licenses (Solidworks, Altium Designer, Xilinx Foundation, Keil, etc.) and not have much left for other stuff. Heck, my DSO alone cost me about $20K. The computer I am typing this on probably has $50K in hardware and licenses on it.I could personally consider the idea of presenting a hardware startup to YC, but I would need to know that this is not about (with the utmost respect) finding a few starving 20-year-olds that will kill themselves for a $20K investment. From my vantage point, if you are not throwing $250K+ into a hardware startup it just isn't going to happen. Of course there are exceptions to every rule. Then again, this ain't my first rodeo.
Now, if the idea is to throw some money at a project to cobble-together a smoke-and-mirrors prototype and then go raise a few million, well, for the right project this could work.
Again, I say the above with respect for what you do. I have done a lot of hardware/software/multidisciplinary development. It's very different from pure software web/mobile startups. Very different.