Telescope mirror fan control

Hi friends!
I’d like to control the fans on my telescope. There is an ASCOM driver for it, but I’m not sure how to integrate that with voyager. Basically I want to set the fan speed on startup / beginning of the night, change it right before starting to image and shut them down at the end of the night.
How can I achieve this?

Voyager do not use ASCOM switch control inside directly … this kind of drivers are not reliable.
For this task we using a companion of Voyager called Viking, check if your I/O card are supported otherwise you can create an external script to call in DragScript in Voyager or ask for a custom development using the support email

this is the fan control of the RCOS TCC - As I understand this is not supported via Viking (yet?)

Is not supported by Viking.

All the best