Auteur Sujet: Chinese hotend Marlin settings  (Lu 2088 fois)

YureZzZ

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Chinese hotend Marlin settings
« le: 19 octobre, 2015, 08:32:05 am »
Bonjour!

I've got one of this noname hotends http://aliexpress.com/item/FreeShipping-Long-distance-3D-Printer-J-head-Hotend-for-1-75mm-3-0mm-E3D-Bowden-Extruder/2041826923.html?isOrigTitle=true for my wooden SmartCore(june version).

On some sites its named as J-head, on others E3D v5. I have no idea which one is correct, but it works. And strangely, I've had to drill some plastic on the holder clamps in order to fit this hotend - the original hole was smaller.

I wonder, what is the correct string for this thermistor?
Using #define TEMP_SENSOR_0 6 at the moment, but I feel that its wrong.

Can you show me your extruders photos and thermistor settings, please?

Darhf

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Re: Chinese hotend Marlin settings
« Réponse #1 le: 19 octobre, 2015, 09:20:22 am »
Hi,

I use one of these with the stock SmartCore Marlin Fimware ( https://github.com/smartfriendz/smartcore/tree/master/firmware ), I never changed any thermistor settings.

The core default is :
#define TEMP_SENSOR_0 13

https://github.com/smartfriendz/smartcore/blob/8eb628cc742dffc20ed5425ab7f439aedae0b21a/firmware/mk8/Marlin/Configuration.h#L145

Aze

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Re: Chinese hotend Marlin settings
« Réponse #2 le: 19 octobre, 2015, 11:27:50 am »
Hi,
on the 'aliexpress link' it's written "Thermistor:100K NTC B 3950 ±1% ,1m long".
In Marlin, in config.h, you can find theses comments:
//--NORMAL IS 4.7kohm PULLUP!-- 1kohm pullup can be used on hotend sensor, using correct resistor and table
//
//// Temperature sensor settings:
// -2 is thermocouple with MAX6675 (only for sensor 0)
// -1 is thermocouple with AD595
// 0 is not used
// 1 is 100k thermistor - best choice for EPCOS 100k (4.7k pullup)
// 2 is 200k thermistor - ATC Semitec 204GT-2 (4.7k pullup)
// 3 is Mendel-parts thermistor (4.7k pullup)
// 4 is 10k thermistor !! do not use it for a hotend. It gives bad resolution at high temp. !!
// 5 is 100K thermistor - ATC Semitec 104GT-2 (Used in ParCan & J-Head) (4.7k pullup)
// 6 is 100k EPCOS - Not as accurate as table 1 (created using a fluke thermocouple) (4.7k pullup)
// 7 is 100k Honeywell thermistor 135-104LAG-J01 (4.7k pullup)
// 71 is 100k Honeywell thermistor 135-104LAF-J01 (4.7k pullup)
// 8 is 100k 0603 SMD Vishay NTCS0603E3104FXT (4.7k pullup)
// 9 is 100k GE Sensing AL03006-58.2K-97-G1 (4.7k pullup)
// 10 is 100k RS thermistor 198-961 (4.7k pullup)
// 11 is 100k beta 3950 1% thermistor (4.7k pullup)
// 12 is 100k 0603 SMD Vishay NTCS0603E3104FXT (4.7k pullup) (calibrated for Makibox hot bed)
// 13 is 100k Hisens 3950  1% up to 300°C for hotend "Simple ONE " & "Hotend "All In ONE"
// 20 is the PT100 circuit found in the Ultimainboard V2.x
// 60 is 100k Maker's Tool Works Kapton Bed Thermistor beta=3950
//
//    1k ohm pullup tables - This is not normal, you would have to have changed out your 4.7k for 1k
//                          (but gives greater accuracy and more stable PID)
// 51 is 100k thermistor - EPCOS (1k pullup)
// 52 is 200k thermistor - ATC Semitec 204GT-2 (1k pullup)
// 55 is 100k thermistor - ATC Semitec 104GT-2 (Used in ParCan & J-Head) (1k pullup)
//
// 1047 is Pt1000 with 4k7 pullup
// 1010 is Pt1000 with 1k pullup (non standard)
// 147 is Pt100 with 4k7 pullup
// 110 is Pt100 with 1k pullup (non standard)


Number 11 or 13? I think it's more number 11, because it may be the cheapest one.
« Modifié: 19 octobre, 2015, 11:29:34 am par Aze »

YureZzZ

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Re: Chinese hotend Marlin settings
« Réponse #3 le: 19 octobre, 2015, 01:01:23 pm »
Thanks, I'll try 11 and see if it fits.

YureZzZ

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Re: Chinese hotend Marlin settings
« Réponse #4 le: 21 octobre, 2015, 01:27:10 pm »
Thanks, Aze! It works fine. Now I have to tune in other settings.