Answer two questions. We'll show you the right controller, the hardware you'll need, and direct links to the relevant documentation. Nothing else.

Ships as a bare board—enclosure not yet included.
Drives your rotation motor directly and, with a second Caterpillar board for the shutter, controls the dome opening—the two connect to each other automatically over WiFi. Handles encoder-based azimuth positioning, home sensing, and safety interlocks in one integrated system.

Connects to your existing button-operated drive through relays, with no rewiring of the motor system itself. Adds full software control, encoder positioning, and home sensing on top of whatever mechanical setup you already have running.
Both Caterpillar roof controllers offer ASCOM and INDI support and run standalone over USB or WiFi, or alongside Dragonfly or Starling.

Ships as a bare board—enclosure not yet included.
Dedicated stepper-motor roll-off controller. Drives motors up to 2.7 A directly, with precise step positioning and limit switch support.
Planned variant for DC and AC motor drives. If your roof uses a motor we don't yet support, reach out; we develop these to order in a realistic timeframe.
Already using Dragonfly or Starling? Both are fully supported alternatives for roll-off roof automation. If your system is already built around either of them, they may be a better fit than adding a Caterpillar SSR. Dragonfly · Starling