OpenAstroTracker GPS upgrade
Pre-soldered and wired GPS addon, compatible with OAT Kits and MKS 2.1, 2.0, 1.0.
Automatically determine local sidereal time on OAT and automate the HA time step. You can also sync your local coordinates from OAT to compatible ASCOM programs, such as NINA.
For installation instructions, see this page.