Here are the various files etc. if you want to make your own Chronograph.
Rar file with the files required to make the PCB using Seeedstudio.com are here
A copy of the sketch I'm currently using with my PCB is here, please note it's definitely a work in progress, use at your own risk.
Please note that the connections to the LCD are not the standard ones, I have changed them to suit my PCB requirements.
8x2 LCD (16x2 can be used, just modify the code to suit) from here
5V Step-up converter from here
Arduino Mini Pro clone from here (check the pin out is the same prior to buying)
Switches from here
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