This project is currently in Closed Beta. Hardware and software are not yet publicly available.
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The DIY Reaction Light System for Your Training

Professional reaction training for sports clubs, schools and home use. Affordable, infinitely flexible and completely app-free.

PUCK RACER Puck
Live Demo All Games Build Your Own

Discover the Games

From reaction tests to team training – tap a game for more details.

Why Puck Racer?

⚙ Affordable & DIY

Complete hardware under 20 € per puck. Open-source PCB, numerous 3D-printable adapters and a great project to build yourself.

⚡ Professional Training

Over 27 games, detailed statistics, training plans and CSV export. Developed with PE teachers and coaches.

🔒 Private & Independent

No subscription, no cloud, no app. Runs in any browser on any device. Your data stays with you.

📡 ESP-NOW Radio Technology

Over 50 m range, automatic channel selection and reconnect. No internet needed – the pucks communicate directly.

🌐 7 Languages

The interface is available in German, English, French, Spanish, Italian, Chinese, ....

🔋 4+ Hours Battery

Rechargeable 18650 battery with intelligent protection circuit. OTA updates for coordinator and pucks via the web interface.

Ready to Get Started?

Try the interactive demo or learn how to build your own system.

Launch Live Demo Hardware Guide Downloads