1. Cricket Ball Line and Length Tracker Chris Chester

2. Corridor of Uncertainty corridor of uncertainty: PitchVision (2011) Just outside the offstump Pitched 3/4 of the way down the pitch Hard to for a batsman to play

3. Issues: Bulky – would alter the trajectory of the ball Costly – Pads cost more than $40 each

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5.  Microcontroller used to detect capacitance  Uses RC time constant Set up internal clock to count ticks Internal

6.  Calibrate the Pad  Look for Change in amount of ticks  Activate feedback  Recalibrate 50100 300

7.  Effective  Cheap  Thin  Multiple Uses Better interface to the bowler Remove alligator clips

8. Conclusions  Pressure Mat had several issues  Capacitive Sheet was a cheap, thin solution.  Utilised the Capacitive sensing function of the microcontrollers  Offers several different alternatives

9. Extra Info  PIC16F1827 by Microchip  Speed = 250kHz  Cost is about $7 W/O LEDs