veyepar: It's All About Timing

Author(s):	Dave Chinner
Location	Room 8
Date	jan Wed 15	Days Raw Files
Start	15:45	First Raw Start	error-in-template
Duration	0:45:0	Offset	None
End	16:30	Last Raw End
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https://lca2020.linux.org.au/schedule/presentation/44/
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Before you can run a timed motorsport event, you have to have a timing system. But what do you do when the requirements for the timing system are severe enough that the only off-the-shelf solutions are so excitingly expensive the event does not have the budget to obtain access to such a system? You guessed it:

"Dave, can you build a timing system for us?"

In this talk I'll walk through the challenges of designing and building a millisecond accurate timing system using open source sfotware and tools that has timing points far enough away that running cables is not practical, is in terrain that makes radio comms largely impossible, has to be set up on site in less than 60 minutes by one person and include safety systems integrated into race control protocols.

This timing system involves Beaglebones, designing and building custom hardware capes and the software to interface with them, as well as all the software to control the system and handle all the timing logic and safety procedure interlocks. It involves python, C, MQTT, wide area networking, highly accurate distributed time synchronisation and, of course,  fast cars.

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