If you're using the Strong Boss mode, it can depend on how quickly it finds a good route.
#Looking to get into arduinos for pokemon automation, would these be okay for Amazon Germany?
tulip aspen
I'm not sure what the average is. But on my shiny Kyogre run it found a really strong route immediately and I didn't lose a single run. 
On Zygarde, I had 29 runs with 22 wins before I got the shiny.
It's all luck, really.
As far as I know, the way the Strong Boss mode works, it tries paths until it finds one with a win rate above a certain threshold (you can change the threshold), then it resets to preserve that path until either the win rate drops below the threshold, you run out of ore, or you get the shiny.
tulip aspen
I'd suspect the average is probably closer to 50% for some of the harder ones. I tend to get lucky with these things
proud meadow
It’s honestly all luck. For zygarde I never lost a path but for latios it was closer to 50%. If you let it run without the “keep strong path” option then it may have results under 50%
*I was running without “keep strong path” for both zygarde and latios
tulip aspen
@hollow mist By the way, the UART cable you've got there says "PL2303TA". The guide mentions specifically not to get these ones, as they don't work.
