I'm using an UNO to program an ATtiny84 (SOIC) with Arduino as ISP, and I'm getting inconsistent results.
First, I was successful in programming one ATtiny with a simple blink program for testing. However, I can't seem to program another one. I get the following error: avrdude: Yikes! Invalid device signature. Double check connections and try again, or use -F to override this check.
I think I might know the problem, but before taking a ton of time to test this out I'd like to get some feedback. For the successful case, the chip was connected to a single LED. For the unsuccessful case, the chip was connected to various other components (potentiometers, amplifiers). Can these other components possibly affect the ISP process? If a schematic would be helpful, I can provide that.
Any help is appreciated. Thanks!