why don't you add an 120R resistor between reset and +5V or a capacitor between reset and GND ?
What I found to work, 10k resistor between attiny RST and +v AND 22nF cap between attiny RST and Arduino reset pin. No modification/parts added to arduino. Don't remember where I found these instructions. Let us know.
I think that with the resistor I have disconnected the auto reset. Led associated to pin 13 does not blink during upload, and now the error is different:
Quote from: ProfePaco on Dec 23, 2011, 01:20 amI think that with the resistor I have disconnected the auto reset. Led associated to pin 13 does not blink during upload, and now the error is different:Or, the Arudino ISP sketch has been erased.Connect an LED to pin 9. When the ArduinoISP sketch is idle, does the LED on pin 9 slowly get brighter then dimmer?When you try to upload to the ATtiny, does the LED on pin 9 blink?
I have good news, annoying news, and good news.First the good news. I've reproduced the problem and I know what is wrong.Now for the annoying news. Arduino 1.0 and the ArduinoISP sketch are not compatible. There are some problems with the ArduinoISP sketch and Arduino 1.0 surfaces at least one of those problems.And, finally, the good news. I have an update for the ArduinoISP sketch that works correctly with Arduino 1.0. If you'd like a copy, send me a Personal Message with your email address.