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Messages - MurrayPeterson

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1
SASC Events / Re: Another YYC event?
« on: October 23, 2017, 09:57:05 PM »
If we race on Saturday, Jo can come.  It's only Sunday where we need to make arrangements.

2
SASC Events / Re: Another YYC event?
« on: October 23, 2017, 07:13:11 PM »
I don't think your truck has working a 12V outlet.



3
SASC Events / Re: Another YYC event?
« on: October 23, 2017, 06:47:22 PM »
Jo is doing something else this weekend, so the timing and hauling vehicle will be unavailable.

I can probably manage to haul the timing gear in the Miata, but we will need someone's vehicle to use for the timing.

4
Technical Talk / Re: Possible system enhancement
« on: October 20, 2017, 07:29:43 PM »
Added a poll.  Let me know if you want other options added.

5
Technical Talk / Re: Possible system enhancement
« on: October 19, 2017, 06:55:04 PM »
What about just displaying DNF and no time?

I can display "dnF" I suppose, but lots of people are probably still interested in their time, even if they missed a gate.
I'll add this to the list of suggestions -- we can have a poll later.


6
Technical Talk / Re: Possible system enhancement
« on: October 19, 2017, 12:05:14 PM »
That is an interesting idea.  I was thinking of using one of the digit circuit boards I have in stock, so adding a complete digit was my cheapest option.

However, the binary suggestion gives me an idea.  Very, very few courses exceed 99 seconds, which means that the leftmost digit of the display is free for other uses.  I could use one segment pattern to indicate a cone penalty, and a different segment patter to indicate a DNF.  Neither would look like a number, so there would be no confusion about it being a time.

I really want DNFs to be indicated, since beginners go off course without knowing.  If they have an indication of this, it would induce them to go for a ride or get a navigator.


And, yes, some penalties would be missed because they hadn't been entered before the finish beam was tripped.

So, cheapest option by far is to play with leftmost digit in existing signs.  Firmware change only.
Something like:
- middle horizontal segment means one or more cones
- All three horizontal segments means a DNF
- blank digit means no penalty






7
Technical Talk / Re: Possible system enhancement
« on: October 17, 2017, 07:34:32 PM »
Refresh rate is variable, but probably around 15-20 per second -- too low for you to get a good action video as well as getting a clear display shot.

The sign refresh is algorithm is limited by the number of control pins available on the cpu.  It has enough pins to select the active segments for a single digit, and then uses one pin to cycle that digit's power on or off.

8
Technical Talk / Re: Possible system enhancement
« on: October 17, 2017, 07:20:47 PM »
Nope -- the entire circuit board and the firmware would need to be redesigned, and the cost would double (or more).  I consider that far too high a cost just to make your camera happy.  Stop the car for a few seconds while facing the display, and you can read the digits sequentially in the video.


9
Technical Talk / Possible system enhancement
« on: October 17, 2017, 01:33:33 PM »
I was thinking about a winter project for me, and here is what I came up with:

A single digit display that plugs into an existing display, and shows any penalties applies to the car before he crosses the finish line.

0 means no penalty
1-9 is number of cones
"d" for a dnf

Since it will plug into an existing display, it doesn't need a battery or radio, so the cost should be reasonable.  I haven't done a costing yet, but I think it could be done for $150 or less.  Of course, the first one is always a pain, since I need to modify the display firmware, add wiring and a socket to the existing display, and modify MJTiming software to transmit the penalty out to the display.

Thoughts?

10
SASC Events / Re: Results for practise event of October 15, 2017 at YYC
« on: October 16, 2017, 10:01:28 PM »

11
SASC Events / Re: Results for practise event of October 15, 2017 at YYC
« on: October 16, 2017, 02:52:10 PM »
I had doubts as well, but when you can out-PAX yourself, then that has to count for something :)

12
SASC Events / Re: Results for practise event of October 15, 2017 at YYC
« on: October 16, 2017, 01:44:21 AM »
Updated due to one car's class change.

13
SASC Events / Results for practise event of October 15, 2017 at YYC
« on: October 15, 2017, 05:11:40 PM »
https://drive.google.com/open?id=0ByeFbiNdvLbGTUx2eXgzbEsxWlE

Scored as single best run, since we made no course changes at all.

The course did indeed drive much like a road course -- I liked it a lot.  Super tough to find those last few tenths, even when we had 13 runs to figure it out.

Cam took a few runs in my Miata, and on his last run, "figured it out" :)  He did a raw time of 35.803, beating my best run of 36.413.  The resulting PAX time also beat his Corvette PAX time, by .178 seconds, so I guess Cam proved a few things definitively today:
1. He is fast :)
2. Today's course was not a power course


14
Yeah, we shouldn't let this devolve into a discussion over PAX "accuracy" :)

15
Automotive Marketplace / Re: WTB : 225 45 17 RE71's
« on: October 13, 2017, 12:51:32 AM »
I have a set of 215's that probably (hopefully?) have one event left on them.  Currently mounted, so you would need to have to deal with that.

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