These aren't Raspberry Pi based, but may be what you want: https://news.ycombinator.com/item?id=36347706 https://news.ycombinator.com/item?id=36347706 https:/

These aren't Raspberry Pi based, but may be what you want: https://news.ycombinator.com/item?id=36347706 https://news.ycombinator.com/item?id=36347706 https://news.ycombinator.com/item?id=36347805 https://news.ycombinator.com/item?id=36347805