Observed arrival · 2026-10-23
LessonInk: a teaching whiteboard that runs circuits
LessonInk is a browser-based whiteboard for teaching, combining handwriting, diagrams, code, circuit simulations, and presentation slides.
○Open
⊠Login
$Paid
†Ads
✦Pretty
●Pro
◎Niche
◉Human
⚑Risk
ƒJS
- For
- Teachers, tutors, and students learning technical subjects
- Worth noticing
- The homepage lists syntax highlighting for 17 languages and circuit features including burn-out warnings and repair suggestions.
Field notes
The feature inventory includes Mermaid import, connectors that stay attached to shapes, and automatic tree layouts in either top-down or left-right orientation. For presentations, users can mark frames, zoom through them full screen, and export a paged PDF; the page also lists PNG and JPEG exports. It says work is saved in the browser as users go, with boards also saved and opened as .lessonink files.
Observed signals
Read the marks
Editorial observations of this landing page, not a rating.
○OpenPublic substance visible
✦PrettyNotable craft visible
●ProPolished or operationally mature
◎NicheUnusually specific use
One card from the complete issue