BusyPizza 🍕
Writing, and notes from building things. The tools themselves live at busypizza.bond.
Recent
- Forza Horizon 4 on a Mac: a crash that is not in any patch
Notes from a debugging session: a random startup crash, a sign-in window that takes minutes to load, and the three hypotheses that turned out to be wrong.
- 一只水瓶为什么能在空中翻过来，还稳稳站住？
用一个可调参数的二维模型，看水怎样改变转动惯量，让瓶子在空中转得更慢。附可交互模拟。
- 桌足球里的「空当」是怎么出现的
从击球、借墙到防守站位，再看单打和双打为什么像两种游戏。附两段物理示意视频。
- Badminton tracker: measuring three detectors, then choosing the one that needs no labels
Tracks a shuttlecock on screen during a livestream. The deciding step was comparing three detectors on contiguous clips.
- BetterNotes: nearby sync, and a release that has not happened yet
An iPad and Mac notes app on PencilKit. The sync design is settled; the TestFlight and App Store dates have not been met on the evidence in the repo.
- How busypizza.bond and this blog fit together
A one-file landing page with a subdomain per tool, and a blog whose publishing path is a schema, a build and a script.
- D7000 robotic camera: the software ran before the hardware existed
A pan-tilt rig that scans a scene, scores frames and triggers a Nikon D7000. The control stack has run on a real Pi and camera; the parts are not yet ordered.
- Delivery Simulator: a game built against a frozen data contract
A driving game about delivery-rider economics that cannot tell real data from synthetic, because the interface was frozen before either side existed.