[BUG] Wrong thermistor default value in configuration.h #280

New Issue

2022-02-17T14:59:56-06:00

i-chebykin commented

2022-02-17 14:59:56 -06:00

(Migrated from github.com)

Bug Description

The default values for the TEMP_SENSOR_0 and TEMP_SENSOR_BED are 1
According to the Marlin\src\module\thermistor\thermistor_1.h this corresponds to
R25 = 100 kOhm, beta25 = 4092 K, 4.7 kOhm pull-up, bed thermistor
But beta of the ai3m printer is B3950 from the stock
Moreover 13 is commented as B3950, but accordint to the thermistor_13.h
the value 13 corresponds to R25 = 100 kOhm, beta25 = 4100 K, 4.7 kOhm pull-up, Hisens thermistor

So, it is needed to fix wrong defaults and wrong comments

Steps to Reproduce

just run default build and measure real temperature

Expected behavior: [What you expect to happen]

Actual behavior: [What actually happens]
The real temperature is very different from the displayed values

Additional Information

Provide pictures or links to videos that clearly demonstrate the issue.
See How Can I Contribute for additional guidelines.

### Bug Description The default values for the TEMP_SENSOR_0 and TEMP_SENSOR_BED are `1` According to the `Marlin\src\module\thermistor\thermistor_1.h` this corresponds to `R25 = 100 kOhm, beta25 = 4092 K, 4.7 kOhm pull-up, bed thermistor` But beta of the ai3m printer is B3950 from the stock Moreover `13` is commented as B3950, but accordint to the `thermistor_13.h` the value `13` corresponds to `R25 = 100 kOhm, beta25 = 4100 K, 4.7 kOhm pull-up, Hisens thermistor` So, it is needed to fix wrong defaults and wrong comments ### Steps to Reproduce just run default build and measure real temperature **Expected behavior:** [What you expect to happen] **Actual behavior:** [What actually happens] The real temperature is very different from the displayed values #### Additional Information * Provide pictures or links to videos that clearly demonstrate the issue. * See [How Can I Contribute](#how-can-i-contribute) for additional guidelines.

knutwurst commented

2022-02-20 11:03:27 -06:00

(Migrated from github.com)

I don't quite understand the bug ticket. How do you get 13? Type 1 and Type 11 are installed by Anycubic, although these hardly differ and Type 11 mostly applies to newer printers such as the 4MAX. Type 13 is never used.

But yes, the description is misleading. But it comes directly from the Marlin sources. However, since I don't use them, I don't think I'll change them.

I don't quite understand the bug ticket. How do you get 13? Type 1 and Type 11 are installed by Anycubic, although these hardly differ and Type 11 mostly applies to newer printers such as the 4MAX. Type 13 is never used. But yes, the description is misleading. But it comes directly from the Marlin sources. However, since I don't use them, I don't think I'll change them.

i-chebykin commented

2022-02-20 11:51:45 -06:00

(Migrated from github.com)

ok, I see
closed the issue

ok, I see closed the issue

github-actions[bot] commented

2022-04-21 20:33:27 -05:00

(Migrated from github.com)

This issue has been automatically locked since there has not been any recent activity after it was closed. Please open a new issue for related bugs.

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Reference: wp/Marlin-2-0-x-Anycubic-i3-MEGA-S#280