Want to log higher than 215*F?
08-08-2008, 01:15 PM
#1
Boost Czar
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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:
to this:
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.
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
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
enjoy.
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08-08-2008, 02:38 PM
#6
Boost Czar
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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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08-08-2008, 07:08 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
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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08-08-2008, 08:40 PM
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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
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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08-13-2008, 04:03 PM
#12
Boost Czar
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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.
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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