My code is available at github.com/XXgeoXX/indi. Is seems that we pretty much went the same road. I also used the MoonLite focuser code as a basis for implementing the driver. The commands you send to the focuser controller look similar to mine. My code should basically be complete, including automatic temperature compensation, selecting rotation direction as well as changing the temperature compensation sign. However, since I only own one USB_focus_v3 and have no access to other samples, it up to now has only been tested with my device, having firmware 1505 installed on it.

Best regards,
Georg

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