Hello guys.
I'm very new to KStars, Ekos and Raspberry Pi4. 
​​​​​​I modded a old Eos400d a few weeks ago. Then I noticed that it's not possible to do longer Subs over 30 seconds with USB connection. 
Then I buildet a shutter cable from 2,5mm camera jack to GPIO 17 shutter and GPIO 18 focus, with 2 BC NPN transistors and a resistor between the GPIO. So the Raspberry should able to trigger the camera. 

My problem is that I have absolutely no idea with programming in python. 
Is there a simple solution for this problem? 

Have a nice day 
Nils