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Topic: Attiny85 Invalid device signature... (Read 2 times) previous topic - next topic

rptw

I've already changed breadboards and wires completely, unfortunately I have no way to test continuity though :(

Chagrin

Do you have any status LEDs on pins 9, 8, 7? IMHO the first step is to actually ensure you have ISP running.

rptw

I don't have any LEDs to use to try.  I uploaded the Blink example and it worked, would there be any reason ISP wouldn't?

Chagrin

The question is whether or not you're resetting your Uno and unloading ArduinoISP when you're trying to program the ATTiny. The capacitor you placed between reset and GND (you did that part, right?) should prevent that reset, but y'know ... it's a good idea to be certain.

rptw

Appreciate all helps you guys tried to provide.  Unfortunately my time has run out and I don't have the resources to continue to try to fix this.  It was fun while it lasted, maybe I will revisit this in the future.  Thanks again!

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