Looks interesting if you need something really really small.
But if you want something that small, you may as well just use the ATTiny on its own and program via an ISP.
I bought a few ATTiny's a few years ago, but never found a use for them that needed something that small. Arduino Mino or Micro from eBay suppliers are much more versatile, although a bit bigger. ie I just measured and Arduino Micro and it was 18mm x 32mm.
But I've yet to come across a project where that size is too big.
Hi Roger, thanks for your reply..
I also had loads of ATTiny85's and 45's which I program by ISP too
I found ISP programming a bit of a pain (probably my own fault) and when I saw this I thought id give it a go, its really simple, just a shame the PCB layout for the input/output pins doesnt line up with a standard 8pin DIL package, if they did then the OLIMEXINO85 would be directly retrofittable with a ATTiny85.
I love the simplicity and obvious lack of versatility (no uarts etc), but that makes it more fun to try and squeeze every last drop out of such a tiny device
I have loads of 8's and 328's etc, but sometimes find them overkill for simple applications