I am currently soldering a few AtTiny based boards, when I realised I didn't know something.
The required size of the decoupling caps and wether those should be ceramic or electrolytes. Now, since they are both dirt cheap and I've got a whole bunch of the boards lying around, I've tried building them with both. Both work.
O have a 0.1 Uf Cap on the reset (according to the Atmel note that was correct) and a 10 Uf Cap on the VCC.
My questions are; are those values sensible? And should I use ceramics or electrolytes?
By the way, all this board does is register a button and flash leds. Still hobby'ing around.