Professional Soccer Ball Analytics System
Powered by AI • Built by Skyler and Sahil
Real-time analytics • AI-powered coaching • Professional insights for everyone
Measure kick speed up to 70 mph with professional-grade accuracy. Track your progress over time.
Monitor RPM to perfect your curve shots. Learn the physics behind ball movement.
Get instant, personalized feedback powered by advanced AI. Improve faster with smart insights.
Track every kick, analyze trends, and identify areas for improvement with detailed analytics.
Visualize shot placement on an interactive soccer field. Perfect your accuracy.
Works on any device with Bluetooth. Train anywhere, anytime with your smartphone.
Connect your Spin Off device and start tracking your performance instantly
Connect your Spin Off device to start collecting data
Get personalized feedback and training plans powered by advanced AI
Your AI coach will analyze your performance and provide personalized feedback. Perform some kicks in the Live Tracker to get started!
The science and technology behind Spin Off
Advanced accelerometer and gyroscope sensors detect the exact moment of ball contact, measuring impact force up to 8G.
During flight, sensors continuously sample at 100Hz, capturing acceleration in all three axes and rotational velocity.
Low-pass filters remove noise while preserving critical data. Peak detection algorithms identify maximum speed and spin.
Bluetooth Low Energy transmits processed data to your device in real-time with minimal latency.
Machine learning algorithms analyze your technique, compare with pro standards, and generate personalized coaching advice.
Speed Calculation: Peak acceleration during impact is converted to velocity using physics equations v = at.
Spin Rate: Gyroscope measures angular velocity in degrees/second, converted to RPM for readability.
Launch Angle: Derived from flight time using projectile motion equations: θ = arcsin(gt/2v).
Flight Time: Detected when acceleration drops below 0.12G (near free-fall) until impact spike.
BMI270: 6-axis inertial measurement unit with ±16g acceleration range and ±2000°/s gyroscope range.
Sampling Rate: 100Hz continuous sampling ensures no data loss during rapid ball movement.
Noise Reduction: Digital low-pass filter with 0.8 alpha coefficient removes vibration artifacts.
Power Efficiency: Intelligent wake/sleep modes extend battery life to 8+ hours of continuous use.
Built with cutting-edge hardware and software
7th Grade Students | Invention Convention 2026
Passionate about electronics and sports technology. Led the hardware integration, sensor calibration, and Arduino programming. Plays baseball but loves bringing technology to the sports world.
Enthusiastic about the build. Designed ball latch system. Dedicated to making professional sports analytics accessible to everyone. Plays soccer and enjoys riding ebikes along with gaming.
We created Spin Off because we believe that professional level sports analytics shouldn't be limited to high level athletes with expensive equipment. Every soccer player deserves access to data-driven insights that can help them improve their technique, track their progress, and achieve their goals. Through combining affordable hardware with powerful AI, we're changing sports stats and making it accessible to players of all levels.
October 2025: Initial concept - "What if we could track soccer ball data like professional teams?"
November 2025: Research phase - researching what parts would be best for the build.
December 2025: Prototype 1 - Basic Arduino setup with accelerometer readings
January 2026: Final version - Added a gyroscope, a web page, integrated AI coaching, perfected algorithms. Ready for convention!