Hey, I'm sure this is a really nooby question, but I've got a Duinotech ATTINY85 (Duinotech ATTINY85 Micro USB Development Board | Jaycar Electronics) and I'm wondering whether I could power this using two AA batteries through the vin and 5v ports?
Thanks.
The webpage you linked to says:
Power can also be provided directly via 5V, or by using the integrated 5V voltage regulator from a 7-35VDC supply (12V or less recommended).
2x AA batteries at a nominal 1.5v each will give you 3v, which isn't enough. You could use a battery holder that takes 6x AA batteries that would give you around 9V.
I've not looked at the TINY85 datasheet, but it can probably run fine off 2x AA batteries directly without the voltage regulator circuitry that your board has. TINY85s are available in a nice big 8-pin DIL package which you can prototype with on breadboard.
Nope
Thanks guys, so if I'm understanding correctly, I can't run the board on just 2 AA batteries, I would at least need 6 to equal 9V, if so, could i use just 1 9v battery instead?
Probably
Look at the spec of the ATTiny on that board, they come in many flavours some can use very low voltage some cannot. You have overpriced knock off of Digispark boarl, which also has regulator that is designed to be used 7V+ supply IIRC. I doubt it will be low power version. It might work from 2.7v to 5V pin but only at 1MHz as it has no external crystal.
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