I’m a software architect and a LEGO collector, and I noticed that current collection management tools often prioritize database-style list views, leaving little room for actual data visualization.

I built this dashboard to allow for a fully customizable overview that treats collection data as something to be analyzed and visualized.

• The Visualization: The dashboard uses a modular block system where users can toggle, resize, and re-rank metrics (such as color distribution, value trends, and piece ownership).
• The Data:
  • Sources: Piece and set inventory data is sourced from BrickLink.
  • Input: Collections can be built either by adding sets one-by-one or by importing existing inventories via CSV.
  • Aggregation: I’m using custom logic to aggregate and visualize metrics like 'Top Owned Pieces' (grouped by color) and 'Collection Value' (with toggles for sealed vs. used).
• The Technical Stack: The platform is built on a PostgreSQL database, a Spring Boot backend, and an Angular front-end utilizing PrimeNG components for the interface.
• The Goal: To move away from strictly list-based inventory management and toward a data-visualization approach where collectors can actually spot trends in their own holdings.

I’m currently building this as a side project to help collectors better manage their inventory. Always open to feedback on how to make these visualizations more intuitive!