Glad to hear that it works.

There's a locking safety switch in Telescope and Dome Tabs:
In Telescope Tab-> Options->Dome locks:  This prevents the mount from unparking when dome is parked. 
And in Dome Tab->Options->Mount locks:  This prevents the dome from parking when mount is unparked. 

In my remote hosting facility they provided a device for additional security: two magnet switches fixed on the RA of the mount and connected directly to the roof hardware controller.
In park position the switches close a circuit so that there's a physical check on the mount position and not just rely on software controls.  More or less the same as the laser trigger you're thinking of.

Rain / bad weather. You need to connect your rain gauge or meteo station to Ekos through an INDI driver and set safety conditions.
Then Ekos itself manages shutdown (park mount, park dome etc) if weather is not safe.

To connect your device to Ekos you can think of using a standard INDI driver or write your own.
If your rain gauge can output a text file via LAN or Serial port to your Ekos PC, as a first approach I suggest Weather Watcher driver that just need such a text file with proper information.

Ferrante

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