Hi, these are exactly the same symptoms I was experiencing.
I gave up looking at the code in the end, and compiled the grozzie V1.0 driver from source as I knew it worked ok(ish) and th
E slaving works fine. It's still a bit flakey and not as good as Tim Long's V3.x code, but slaving works at least. If the issue really is in the Base class you would think the v1 driver would be affected in the same way. If you do decide to use the old driver don't forget the firmware on both shutter and rotator need to be flashed to match the driver. I also had to clear the eeprom and re-program the xbees as Tim uses a different method to program these from the previous drivers.

If it is ever resolved I would go back to the new drivers though.

Mark

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