I am playing with the indi focuser simulator, which is absolutely awesome because the camera simulator also simulates the defocus/blurring accordingly
At some point, I'd like to implement the solution that runs with the simulator in real life. Unfortunately, I realized that, on the contrary of the simulator, getting /setting absolute position on off-the-shelf focuser is usually impossible due to the absence of encoder on commercial solution.
Even a low resolution encoder would be fine, or even a homing sensor with the hability to set home position (much like on the common 3d printers) would be nice to control a remote telescope, but it looks like there is no such solution currently available.
Please tell me if there are solutions available to get to know the absolute position of the focuser
With the recent integration of Robert Brown's Myfocuser Pro2 into Indi and being a DIY kinda guy it would be my top pick. It has the option for a home switch and when installed works perfectly.
Only downside is If you want the nice looking cube form factor of the Pegasus or EAF then you will be out of luck with the naked stepper motor.
If electronics is not in your skill set Robert also offers fully assembled PCB leaving you to connect the motor of your choice and mount it. Or even the option to cobble off the shelf modules with no soldering required.
In terms of features and options offered I know of no commercial unit that comes close and should you have a question or problem he is readily contactable and ever helpful.