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.IX Title "Device::USB::PCSensor::HidTEMPer::NTC::External 3pm"
.TH Device::USB::PCSensor::HidTEMPer::NTC::External 3pm "2022-08-26" "perl v5.34.0" "User Contributed Perl Documentation"
.\" For nroff, turn off justification.  Always turn off hyphenation; it makes
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.SH "NAME"
Device::USB::PCSensor::HidTEMPer::NTC::Internal \- The HidTEMPerNTC external sensor
.SH "VERSION"
.IX Header "VERSION"
Version 0.02
.SH "SYNOPSIS"
.IX Header "SYNOPSIS"
None
.SH "DESCRIPTION"
.IX Header "DESCRIPTION"
This is the implementation of the HidTEMPerNTC external sensor.
.SS "\s-1CONSTANTS\s0"
.IX Subsection "CONSTANTS"
.IP "\(bu" 3
\&\s-1MAX_TEMPERATURE\s0
.Sp
The highest temperature(150 degrees celsius) this sensor can detect.
.IP "\(bu" 3
\&\s-1MIN_TEMPERATURE\s0
.Sp
The lowest temperature(\-50 degrees celsius) this sensor can detect.
.IP "\(bu" 3
\&\s-1INITIAL_GAIN\s0
.Sp
The initial gain value used to calculate voltage returned
.IP "\(bu" 3
\&\s-1CALIBRATION_VALUES\s0
.Sp
Values used to calculate Volt7705Calibration
.SS "\s-1METHODS\s0"
.IX Subsection "METHODS"
.IP "\(bu" 3
\&\fBnew()\fR
.Sp
Returns a new External sensor object.
.IP "\(bu" 3
\&\fBcelsius()\fR
.Sp
Returns the current temperature from the device in celsius degrees.
.Sp
The formula used to calculate value based on a calibrated key value is
created using the Eureqa tool from Cornell Computational Synthesis Lab,
http://ccsl.mae.cornell.edu/eureqa.
.Sp
Resulting in the use of this formula instead of the provided number list:
f(y)=66.7348/(66.7275/(67.8088 \- 9.70353*log(0.000251309 + y*y)) \- 0.21651)
.Sp
If you find another formula that is more accurate please drop me a line. 
The data used can be found in the source code of this file.
.SH "INHERIT METHODS FROM"
.IX Header "INHERIT METHODS FROM"
Device::USB::PCSensor::HidTEMPer::Sensor
.SH "DEPENDENCIES"
.IX Header "DEPENDENCIES"
This module internally includes and takes use of the following packages:
.PP
.Vb 3
\&  use Carp;
\&  use Time::HiRes qw / sleep /;
\&  use Device::USB::PCSensor::HidTEMPer::Sensor;
.Ve
.PP
This module uses the strict and warning pragmas.
.SH "BUGS"
.IX Header "BUGS"
Please report any bugs or missing features using the \s-1CPAN RT\s0 tool.
.SH "FOR MORE INFORMATION"
.IX Header "FOR MORE INFORMATION"
None
.SH "AUTHOR"
.IX Header "AUTHOR"
Magnus Sulland < msulland@cpan.org >
.SH "ACKNOWLEDGEMENTS"
.IX Header "ACKNOWLEDGEMENTS"
This code includes findings done by Robin B. Jensen, 
http://www.drunkardswalk.dk, when converting the received hex values into
volt.
.SH "COPYRIGHT & LICENSE"
.IX Header "COPYRIGHT & LICENSE"
Copyright (c) 2010\-2011 Magnus Sulland
.PP
This program is free software; you can redistribute it and/or modify it 
under the same terms as Perl itself.