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AVRISP -> AtTiny Communication Problem

2010-01-15 by Kenny M

Sorry this post is a bit long.
I'm new to all this so be gentle LOL :)

I'm working on my first project, which I've built and is working.
All that's missing is the chip to control it.

I've got a few AtTiny15's and an AVR-ISP v2 (usb)

So built a target board and connected all the programmer pins to the appropriate pins on the chip.
I also connected my 5V+/Gnd to the chip.

Now this is where I get confused,
I've found so many different schematics on the net...

1) This one just says connect everything as above and program
2) Run a 4.7kohm between reset and vcc.
3) Run a 4.7kohm & 10uf between reset and vcc.
4) Run a 4.7kohm & 22pf between reset and vcc.
5) Run a 4.7kohm & 10uf between reset and vcc, and an 800ohm resistor to all the other connections.

I've only tried 1 and 2, since I don't have the caps I'm trying to figure out what I need before I head to the store.


Right now AVR Studio does see something, because it can read/write the speed of the unit. But everything else is just says an error occured.

I'd appreciate any help.

Thanks,

Kenny

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