Nextar hand controller reverse engineering - by: broadcastyourseb

I'd like to share with you my work around my Celestron Advanced GT mount and its Nexstar hand controller.
This is on old one with firmware version 4.21.

I simply heard communication between my laptop and the Nexstar by playing the man in the middle. I used all buttons on the controller, NexRemote software and PEC software and here is the final result, a spreadsheet.

I'm not a programmer, and I will take ages to modifiy the actual driver but it will be great to add new features to Celestron driver.

Of course, I will be glad to help for it.