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.
iOptron CEM120 EC2 and CEM25P
Celestron C11 EdgeHD and William Optics Star71
ASI 1600MM Pro, ASI 462MC
Moonlight Litecrawler (C11) and Motorfocus (WOStar71)
LodeStar X2 and ZWO OAG
Nextdome, AAG Cloudwatcher
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.