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HackYeah 20262026

Trash Fairy

Plans the collection of street bins by how full they are, not by a fixed schedule.

Trash Fairy start page on a phone with an illustration of bins and a demo scenario button

Outcome: Jury score 5.85/10 against an average of 4.66. Fill forecast and collection routes, built solo in 24 hours.

My role: Everything – solo

  • Requirements
  • Route optimisation
  • Data model
  • Python
  • Flask
  • PostgreSQL
  • OR-Tools

Demo is upLast code change:

Key decisions

  1. Rules in code make the decisions, AI only explains them
  2. A button press is not a report: presses are merged within 15 minutes
  3. A bin is collected when it would not last until the next run, not when it is full

Full decision log (Polish)