The most recent raspberry pi image can be downloaded here: [
drive.google.com]
You can flash the image to the SD card using a free tool like Balena Etcher.
There will soon be a new branch of software versions -- we had been releasing software to run on the Intel Edison -- which is what the latest version on github is. With the edison being discontinued, we've switched to the pi. It's a nice step up in performance, but requires a different build of the software.