Re: Vixen GP-DX motorization for Mak 180 #drv8825 #tmc5160 #esp32 #ds3231


hitosi sato
 

Hi.
To calculate the focuser setting, CFZ is calculated from the distance the tube moves in one rotation of the focus knob and the F value of the optics.
You need to have about 10 steps within the CFZ distance to get a precise focuser setting.
I used the "Myfocuserpro" document as a reference.
If Crayford Focuser has a fine knob, 28BYJ-48 might work.
In any case, you need to find the required number of steps from CFZ.

Hitoshi

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