Show HN: Ball 2 – Use AI to build fun ball games

**Show HN: Ball 2 – Use AI to build fun ball games**

I wanted to find a way to get kids:- moving- creating- playing with othersIn the end I, and a team of 4 others, built:- a foam ball with a BLE IMU in it (moving/together)- an app that allows you to create almost any game you can imagine with AI (creating)Video of teenagers making a game: https://www.youtube.com/watch?v=-7TZXRBybOEVideo that was intended to be for Kickstarter: https://www.youtube.com/watch?v=Edy9zew1XN4 (we abandoned kickstarter, long story)For hardware we came up with a pretty awesome custom PCB, based around a Dialog DA14531, that doesnt need any charging for over 500 hours of play. The electronics are encased inside 4.5" diameter of foam. We drove a car over it and it didn't break.For the app, we are using OpenAI Realtime API (gpt-realtime-2025-08-28) to gather the game requirements via conversation. We are using voice/realtime to allow kids to do it without needing to type or read. This piece has a huge dynamic prompt that flows with the conversation...

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