/diy/ - Do It Yourself

>>1770129
>is the MCU's reset supposed to be pulled down (active) for 140ms

When all else fails, read the spec. I'll hook up my logic analyzer and see what avrdude does for me, and post the output in a bit. I'd suggest that you stay away from all that pullup pulldown testing and very carefully analyze your setup. And, just because the led is on does not mean all is well. You can power an AVR through just about any pin. If it's not too hard, I'd pull all the jumpers off the usbasp and provide independent power to the target.