Pinewood Derby Timer (PDT Timer)
www.dfgtec.com/pdt


Revision history:

Ver 3.10 - 12 Dec 2020
- New: Added ability to drive Adafruit 8x8 matrix displays to show finish order (up to 4 lanes)
- New: Added new serial message to query timer configuration

Ver 3.00 - 31 Oct 2016
- New: Added HW test modes for lane detectors and start gate
- New: Added feature to resend results when requested
- New: Added ability to drive two displays per lane (front/back) for up to 4 lanes
- New: Added ability to drive large 1.2" Adafruit displays
- Fix: Optimized time display routines
- Fix: Removed compiler warnings

Ver 2.50 - 10 Mar 2013
- New: Timer precision increased to 4 decimal places (0.0001) 
- New: Option added where timer can be reset by closing start gate
- New: Timer and displays routines modified to handle finish times > 9.999 seconds
- Fix: Racing state loop, finish detection routines optimized
- Fix: Timer now goes into finish state if powered-up with the start gate open
- Fix: Code clean-up

Ver 2.00 - 2 Dec 2012
- New: Timer modified to drive Adafruit displays
- New: Timer modified to utilize RGB status LED

Ver 1.10 - 23 Jan 2012
- Fix: Serial communications improved

Ver 1.08 - 6 Jun 2011
- Initial release to public