SparkLuminaSparkLumina

Blog

Insights, updates, and stories from the SparkLumina team.

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SparkLumina Feature Guide

Complete guide to room creation, joining, room features, whiteboard tools, BrushGenius, DeepExplainar, Xchat, and LLM & TTS configuration.

2026-03-0614 min read

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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

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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

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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