Hi Mike,
I managed to obtain the Exogal Custom Install Instruction Manual from Jeff Haagenstad, the CEO of Exogal. He was very kind and helpful. Hope this information would be helpful to you.
I have uploaded this doco to share with others, who are interested in developing their own touchscreen GUI interface to communicate with the Comet unit.
The serial communication is very reliable and it is possible to query the serial interface and achieve auto COM port selection and connection if you look for PID 0403 and VID 6001 or FTDI as the manufacturer of the USBC serial inferface (i have the latter as the secondary method to perform auto com port lookup) . I got this working reliably.
If you perform a high resolution scan on the Exogal Comet remote and map the button images to command buttons nicely, it is possible to provide a very realistic remote control for the Comet unit. Actually in actual use it much nicer IMO, because you can program single finger click for slow volume increments and double finger clicks as fast volume increments (I have the latter set to 50 by default. So in 4 clicks i can easily go from 0 to 200). It works really well on touch pad interface. Have these increments customisable as user selections and store these settings in a JSON file. I am elated with the results 😊👍 and actually prefer this over the real remote, as it shows the current volume, current state of On/Standby, Input, Output and Mute status... the real remote doesn’t 😅
Here is the link: Exogal Custom Install Instruction Manual P
This is the text URL in case the embedded version doesn't work: https://u.pcloud.link/publink/show?code=XZxb4gVZqqbVcOjmwJ4qb1MCuUtn2mHiEna7
Enjoy!
Cheers,
Damo