Your best bet is to contact Stellarmate directly. This is a somewhat custom system based on Raspberry Pi control and proprietary software, hence unless someone is familiar with it, there won't be that much help here. The control over your K-70 flows via USB (as opposed to simple shutter release control) so it's hard to determine what's going on there without a good knowledge of the USB interface. Stellarmate should have technical help for their product and would be the primary source of help (unless, of course, one of the Pentaxians out there is a Stellarmate user and is familiar with the system).
https://optcorp.com/pages/contact-us