Has this work been postponed indefinitely? I too would be interested in this driver as I have to purchase either the ESATTO or a Moonlight focuser, and the ESATTO is much less expensive. Thanks for any update.
The Esatto driver is part of the Sesto Senso 2 driver. I have used the Esatto with the Sesto Senso 2 driver, before the Esatto support was added, and I now have the newer Sesto Senso 2/Essato driver but haven't had a chance to try it under the stars, as its the cloud snow and rain festival here .
The Esatto is a very nice and solidly built focuser. I use it with my C8.