Tech Insights & Tips

Real engineering experiences, deep technical analysis, and practical solutions for EdTech challenges.

FEATURED ARTICLE

Building VBS: How I Created a Quiz System That Handles 400 Players

A firsthand account of engineering challenges, hardware failures, and the breakthrough moment that led to creating the Viet Bell System. Includes technical details and lessons learned from real classroom deployments.

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QUIZ GUIDE

Mastering the Three Quiz Game Modes

Deep dive into Buzzer, Quiz, and Auto modes. Why each mode exists, when to use it, and how the AI automation saves educators hours of work every week.

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AI TECHNOLOGY

How AI Built 200 Quiz Questions in 12 Minutes

Step-by-step breakdown of our document parsing pipeline. See exactly how PDFs become interactive quizzes, including the prompt engineering that makes it work.

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EDUCATION TECHNOLOGY

Why 400 Players Need a Special Architecture

Deep technical analysis: WebSocket optimization, connection pooling, and latency reduction techniques that make VBS scale to 400 simultaneous players.

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BUSINESS SOLUTIONS

Firestore vs Google Sheets: Which Data Backend for Your Quiz System?

Real comparison of implementation complexity, cost, and scalability. Includes code examples for both approaches based on actual client projects.

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CASE STUDY

SkillsUSA Competition: How VBS Handled 287 Participants

Lessons learned from the largest deployment to date. Technical challenges, user feedback, and the 14 hours AI saved the organizing team.

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