I'm new around here and I own a AVR dragon that arrived a week ago, I really didn't want my first post to be about this and even after scanning through most of the thread posts with precautions on what NOT do with it, something happened that might have damaged it I'm not sure the forum post warnings covered this one.
I configured the dragon to do ISP and operated my circuit with an external power supply, however there was a short and the external power supply (which is a cheap Chinese 5v, 3.3v breadboard power supply regulator from eBay) didn't survive the abuse, it actually didn't't go open circuit and instead sourced +12v and took all the 5+ logic circuit with it destroying the Atmel 328.
My question is as a result of this the dragons level shifting logic received +12 volts and its acting strange, (its drawing 160mA) of power when I connected it again, I measured between VTG and ground on the dragon and it measures 30 ohms is this normal? Can the level shifting take up to 12v externally ? Have I destroyed my dragon ?? :cry:
Thank you in advance.