I was semi-retired after successful crypto speculation - but I am working on a Lego blocks detection app (inspired by https://twitter.com/LEGO_Group/status/1112625676836880384). brickit has beaten me at being the first app doing block recognition but I am not giving up, they also don't yet do something like the original vision. A friend has joined me - so now we are two old-boy programmers learning all this ML stuff: https://zby.github.io/