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| author | Kevin O'Connor <kevin@koconnor.net> | 2020-08-22 16:59:56 -0400 |
|---|---|---|
| committer | Kevin O'Connor <kevin@koconnor.net> | 2020-08-22 17:16:45 -0400 |
| commit | d3e41b55b796b392935da670973452febd7d2cd9 (patch) | |
| tree | 6230833e78e6a5b11bf3958c2015a8cd0ac96dea /klippy | |
| parent | 2c76f7527d030d2f975325be456883d823e907eb (diff) | |
| download | kutter-d3e41b55b796b392935da670973452febd7d2cd9.tar.gz kutter-d3e41b55b796b392935da670973452febd7d2cd9.tar.xz kutter-d3e41b55b796b392935da670973452febd7d2cd9.zip | |
adc_temperature: Calculate PT1000 temperature/resistance pairs from formula
Signed-off-by: Kevin O'Connor <kevin@koconnor.net>
Diffstat (limited to 'klippy')
| -rw-r--r-- | klippy/extras/adc_temperature.py | 10 |
1 files changed, 6 insertions, 4 deletions
diff --git a/klippy/extras/adc_temperature.py b/klippy/extras/adc_temperature.py index 87a1cac6..6e02118a 100644 --- a/klippy/extras/adc_temperature.py +++ b/klippy/extras/adc_temperature.py @@ -274,10 +274,12 @@ PT100 = [ (1000, 4.48), (1100, 4.73) ] -PT1000 = [ - (0., 1000.), (100., 1385.1), (200., 1758.6), (300., 2120.5), - (400., 2470.9), (500., 2809.8), -] +def calc_pt1000(): + # Calc PT1000 temperature/resistance pairs using formula + A, B = (3.9083e-3, -5.775e-7) + return [(float(t), 1000. * (1. + A*t + B*t*t)) for t in range(0, 500, 10)] + +PT1000 = calc_pt1000() def load_config(config): # Register default sensors |