No.
Just for an experiment, I removed as much from my breadboard as I could. Now I have one Attiny85, two zener diods, two signal resistors, pull-up resistor for D-, two caps between power and ground, and pull-up resistor for reset pin of the Attiny (I am not sure if I really need it, but I wanted to err on the safe side). I connected the three unused pins of Attiny to LEDs.
Even this minimal device has the same problem - it works fine until I touch the computer case.
Does it matter how far the caps are located on the breadboard from the Attiny or from incoming cable connection? Could it be the quality of some components? (if so, which ones are the like candidates?)
I'll also try to reassemble it on another breadboard - this one is a super-cheap board and I have some doubts about the connections' quality.
Just for an experiment, I removed as much from my breadboard as I could. Now I have one Attiny85, two zener diods, two signal resistors, pull-up resistor for D-, two caps between power and ground, and pull-up resistor for reset pin of the Attiny (I am not sure if I really need it, but I wanted to err on the safe side). I connected the three unused pins of Attiny to LEDs.
Even this minimal device has the same problem - it works fine until I touch the computer case.
Does it matter how far the caps are located on the breadboard from the Attiny or from incoming cable connection? Could it be the quality of some components? (if so, which ones are the like candidates?)
I'll also try to reassemble it on another breadboard - this one is a super-cheap board and I have some doubts about the connections' quality.