The controlling framework behind Bittle is OpenCat, which I've been developing for a while. You can read more stories from my posts on Hackster.io.
It's too much work for now 🤷🏻♂️ but you are welcome to discuss it with me on the forum or through email. Good thing is, I will keep the code compatible with future OpenCat models, and even your own DIY robots! Hopefully, the documentation will be completed during the processes.