https://openastrotech.com/projects/openastrotracker/
I will be be building this for an inexpensive introduction to astro photography. Standalone with keypad and LCD or ASCOM or INDI support. There is also a companion guide scope and guide camera.
I'll post something when I get it done. Can't say when that will be. I'm still fixing up a 3D printer that I bought for $50. There's not actually much wrong with it that wasn't wrong with it when it come from the factory. It's all the [needed] enhancements that are taking time.