SparkLumina

Blog

Insights, updates, and stories from the SparkLumina team.

—

Introducing SparkLumina v1.0

Five core features ready: collaborative whiteboard, AI smart drawing, AI step-by-step teaching, Board Agent (ExAgent), and session recording — all built on Excalidraw with real-time Socket.IO sync.

2026-02-285 min read

—

How AI Drawing Works: From Text to Canvas

A deep dive into streaming ExcalidrawElementSkeleton generation, audio-visual sync with TTS, and how AI-drawn elements are sanitized and applied to the shared canvas in real-time.

2026-02-255 min read

—

Building ExAgent: A Chat-Driven Canvas Controller

How we designed a streaming AI agent that creates, moves, resizes, and styles Excalidraw elements through natural conversation — with context-aware actions and undo support.

2026-02-206 min read