I undestand, why are number 1 - 255 for the fan speed. (8 bits :). ). And I believe, that is it not a problem for any maker/geek/programmer. But it makes kiri:moto more complicated in education. Spend the time on explaining why 127 means 50% is just waste of time and can lead to the unwanted errors in the fan speed setting.
It is common, that the fan speed is specified as a % in range 0 - 100%.
Would be possible to change it in the Kiri:moto?
It is a small detail, but the “devil is in the details”. :).