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Old 08-08-2008, 02:15 PM   #1
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Default Want to log higher than 215*F?

Pretty simple fix.

Since the 8-bit cpu can only read 255 lines of clt data, and some smart guy at B&G though we'd want to read from -40*F, that gives up a max of 215.

Granted we shouldn't ever run close to 215*, but if you want to see if you are, you certain can. The MS will have no clue it's running greater than 215*, but who cares, you will.

The MS reads the raw ADC voltage from the sensor...but MS and convert off a conversion chart. So open up your thermfactor.inc file in the project folder.

you'll have a long line a data points....you should also notice that 255 repeats a whole bunch of times....this is because Easy Therm still continues the resistance values of the sensor beyond 215*. So simply change the numbers above 255 to read 256 257 258 etc...

example, change this:

Code:
    DB    255T    ;    16    273.27
    DB    255T    ;    17    267.81
    DB    255T    ;    18    262.72
    DB    255T    ;    19    257.95
    DB    255T    ;    20    253.47
    DB    255T    ;    21    249.23
    DB    255T    ;    22    245.23
    DB    255T    ;    23    241.42
    DB    255T    ;    24    237.80
    DB    255T    ;    25    234.35
    DB    255T    ;    26    231.05
    DB    255T    ;    27    227.90
    DB    255T    ;    28    224.87
    DB    255T    ;    29    221.96
    DB    255T    ;    30    219.16
    DB    255T    ;    31    216.46
to this:

Code:
    DB    270T    ;    16    273.27
    DB    269T    ;    17    267.81
    DB    268T    ;    18    262.72
    DB    267T    ;    19    257.95
    DB    266T    ;    20    253.47
    DB    265T    ;    21    249.23
    DB    264T    ;    22    245.23
    DB    263T    ;    23    241.42
    DB    262T    ;    24    237.80
    DB    261T    ;    25    234.35
    DB    260T    ;    26    231.05
    DB    259T    ;    27    227.90
    DB    258T    ;    28    224.87
    DB    257T    ;    29    221.96
    DB    256T    ;    30    219.16
    DB    255T    ;    31    216.46
You'll be able to now see when you ever hit >215*F. See my screen catpure...I made a record of when my OEM gauge hit 12 'o clock, just before I hit 218*F.

enjoy.
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Old 08-08-2008, 02:17 PM   #2
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Woot! Thanks again for testing this out. Silly silly B&G....
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Old 08-08-2008, 03:09 PM   #3
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awesome. Thanks.
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Old 08-08-2008, 03:16 PM   #4
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Wasnt there a huge discussion on this a while ago and someone said it was a code problem?
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Old 08-08-2008, 03:19 PM   #5
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Quote:
Originally Posted by Saml01 View Post
Wasnt there a huge discussion on this a while ago and someone said it was a code problem?
You probably mean with the MS itself. Which is still stuck seeing upto 215.

This merely alters a reference file that MT uses... allowing you to see higher in the gauge display and datalogs.
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Old 08-08-2008, 03:38 PM   #6
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Quote:
Originally Posted by Saml01 View Post
Wasnt there a huge discussion on this a while ago and someone said it was a code problem?

215 is the max in the embedded code. but you can see display it on your laptop and in MLV. so if you were at 250* you could see it, but the MS would still think it's 215. that's it.

in the same discussion i said you could do this...i just went out, go the car warm, remove the fans and logged it to show you guys how.
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Old 08-08-2008, 05:24 PM   #7
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good stuff hopefully i never get that far, anyone ever determine what exactly is the point of danger?
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Old 08-08-2008, 05:50 PM   #8
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Had mine to 235 and the only effect was a funny smell out of the A/C. compression is fine. no coolant / oil exchanging places or getting out.
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Old 08-08-2008, 08:08 PM   #9
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cool except my Thermfactor data points skip like this:

DB 240T ; 21 199.82
DB 236T ; 22 196.39
DB 233T ; 23 193.13
DB 230T ; 24 190.02
DB 227T ; 25 187.05
DB 224T ; 26 184.22
DB 221T ; 27 181.50
DB 219T ; 28 178.89
DB 216T ; 29 176.38
DB 214T ; 30 173.96
DB 212T ; 31 171.63
DB 209T ; 32 169.38
DB 207T ; 33 167.20
DB 205T ; 34 165.09
DB 203T ; 35 163.05
DB 201T ; 36 161.07
DB 199T ; 37 159.14
DB 197T ; 38 157.27
DB 195T ; 39 155.45
DB 194T ; 40 153.68
DB 192T ; 41 151.96

Does that matter?


and why all the sudden do your values change for the same ADC value Scott?

DB 255T ; 30 221.77
DB 255T ; 31 219.05

DB 256T ; 30 219.16
DB 255T ; 31 216.46
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Old 08-08-2008, 08:51 PM   #10
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Man, I should look at mine.

I have bigger issues, though, my temps have never read right. Best I can do it make them linear over a small region, and try to run there. It's on my long, long list.
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Old 08-08-2008, 09:40 PM   #11
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Scott's values are much different than mine too. Aren't you running standalone Scott?

look how high mine go in temp:

DB 271T ; 1 510.41
DB 270T ; 2 418.55
DB 269T ; 3 372.21
DB 268T ; 4 342.05
DB 267T ; 5 320.01
DB 266T ; 6 302.81
DB 265T ; 7 288.78
DB 264T ; 8 276.99
DB 263T ; 9 266.84
DB 262T ; 10 257.96
DB 261T ; 11 250.08
DB 260T ; 12 243.00
DB 259T ; 13 236.59
DB 258T ; 14 230.72
DB 257T ; 15 225.33
DB 256T ; 16 220.34
DB 255T ; 17 215.69
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Old 08-13-2008, 05:03 PM   #12
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i was looking at two different thermfactor files when i posted...the one that's edited is what i'm using.

all i did was simply change the last (15) 255s with increments of 1...

and no i'm not standalone...my bias is 1250 iirc.
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