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By Greg1978
#38253 Lol...I just realized I did the entire image using a picture of it wired up wrong. When the GND was wired up correctly it still was not working.

I even dug out the oscilloscope and noticed that the slave never responded.

Well I burned a new boot loader onto he Attiny85 to run at 8mhz instead of 1mhz and now it is working.

Any way to make it work with the Attiny85 running at 1mhz instead of 8mhz?
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By martinayotte
#38307 Looking quickly at the code found, it rely on micros() function to do the timing, but this function is in attiny85 environment itself, and probably need to be tweak for 1MHz operation.
Maybe there are already some #defines related to that.