# Can someone with Python installed please run createTemperatureLookup.py for me?

Posted by AgeingHippy
 Can someone with Python installed please run createTemperatureLookup.py for me? January 04, 2011 05:16PM Registered: 13 years ago Posts: 482
Hi All

I wonder if someone with Python could run the createTemperatureLookup.py script found here to create the temp table for my thermistor?

R0 = 100,000
T0 = 25 deg Celcius
Beta = 3974
Calculated Rz = 338692
(would be great to calculate using Rz = 326500 as well if possible - determined using this table if my understanding is correct)
using R2 = 4700

Much appreciated. I am not of a mind to install and learn how to run a Python script right now.

Cheers

Edited 1 time(s). Last edit at 01/04/2011 05:19PM by AgeingHippy.
 Re: Can someone with Python installed please run createTemperatureLookup.py for me? January 04, 2011 05:36PM Registered: 13 years ago Posts: 14
Hi

Here's what I get. Not sure what to do with Rz, I am using the same thermistor from Honeywell and these values seem to work.

// Thermistor lookup table for RepRap Temperature Sensor Boards (http://make.rrrf.org/ts)
Lookup.py)
// ./createTemperatureLookup.py --r0=100000 --t0=25 --r1=0 --r2=4700 --beta=3974 --max-adc=1023
// r0: 100000
// t0: 25
// r1: 0
// r2: 4700
// beta: 3974
#define NUMTEMPS 20
short temptable[NUMTEMPS][2] = {
{1, 916},
{54, 265},
{107, 216},
{160, 189},
{213, 171},
{266, 157},
{319, 146},
{372, 136},
{425, 127},
{478, 118},
{531, 110},
{584, 103},
{637, 95},
{690, 88},
{743, 80},
{796, 71},
{849, 62},
{902, 50},
{955, 34},
{1008, 2}
};

Regards
Tayeb
 Re: Can someone with Python installed please run createTemperatureLookup.py for me? January 04, 2011 06:01PM Registered: 13 years ago Posts: 482
Nice one

Thanks Tayeb
 Re: Can someone with Python installed please run createTemperatureLookup.py for me? January 05, 2011 03:53AM Registered: 12 years ago Posts: 384
Do you mind sharing which thermistor this actually is, just for reference sake
 Re: Can someone with Python installed please run createTemperatureLookup.py for me? January 05, 2011 01:41PM Registered: 13 years ago Posts: 14
It's the:
Mouser Part #: 785-135-104LAG-J01
Manufacturer Part #: 135-104LAG-J01
Manufacturer: Honeywell
Description: Thermistors - NTC Glass encapsultd. CHIP

It costs \$ 1.83 at mouser, \$ 0.89 is you buy 10 or more.

If you're building the new aluminum block heater hot head (based on Nophead's design) don't force on the Thermistor, you might break it, just make the hole a little bigger.

Regards
Tayeb
 Re: Can someone with Python installed please run createTemperatureLookup.py for me? January 05, 2011 01:55PM Registered: 13 years ago Posts: 482
I got 135-104LAC-J01 from Mouser, although I cannot find it on the Honeywell site.

I think it is simply the 1% as opposed to the 10% of the LAG.

I am initially going to use it to measure the temp of the nozzle itself since my primary thermistor is on the heater block.

Cheers
 Re: Can someone with Python installed please run createTemperatureLookup.py for me? January 06, 2011 05:19AM Registered: 12 years ago Posts: 384

[reprap.org]
 Re: Can someone with Python installed please run createTemperatureLookup.py for me? February 01, 2011 05:30PM Registered: 13 years ago Posts: 395
@ Tayeb (& @ everyone else able to help):
I have a similar problem as AgeingHippy. I have some thermistors here that are different products than the ones on the reprap-wiki page.
I have the B57550G1103F005 thermistor (you find all details inside the datasheet).

Can anyone help me to generate the temperature table needed for my mendel to work correctly? I really would appreciate your help!!

Edited 1 time(s). Last edit at 02/01/2011 05:31PM by Elk.
 Re: Can someone with Python installed please run createTemperatureLookup.py for me? February 02, 2011 02:27PM Registered: 12 years ago Posts: 25
do all repraps use the Arduino bootloader?

if so do they all use Arduino sketches?

I've just started playing with Arduino separate to RepRap and this comes up:
Arduino Playground - Thermistor Lookup Table

There is also a method for using a formula instead of a lookup:
Arduino Playground - Thermisor Equation

Hope that helps, or prompts someone to tell me off... (please do by the way, I need to learn!)
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