Delta for termistors for correct measureting temperature

user

Hi! My termistor displayes T=225 C but real is T=205 C (I measured it used termocouple). Can i input the delta = +20 C for full equal betweem mesurements and real Temptrature?

Repetier

Newer version have a gain and bias to add a fixed and linear correction factor. But you need to compile firmware with that feature enabled.

Or you create a user defined temperature curve that is correct for your sensor.

user

Repetier wrote
Newer version have a gain and bias to add a fixed and linear correction factor. But you need to compile firmware with that feature enabled.

Or you create a user defined temperature curve that is correct for your sensor.

I can use just Temp. offset in repieter-server? But i cant see manual how it work (incriment or dicrement).
In firmware how called this setting?

Repetier

In config tool it is
Add linear and constant correction to temperature readings (TEMP_GAIN)

Don't rely on server - that is very limited and only over the gui, not the gcodes being send.

user

Repetier wrote
In config tool it is
Add linear and constant correction to temperature readings (TEMP_GAIN)

Don't rely on server - that is very limited and only over the gui, not the gcodes being send.

In web-config i can see Add linear and constant correction to temperature readings (TEMP_GAIN) but where i need set the correction (can't see in the web)?

user

<a rel="nofollow" target="blank">user</a> said:

<blockquote class="Quote">

<a rel="nofollow" target="_blank">Repetier</a> said:

In config tool it is
Add linear and constant correction to temperature readings (TEMP_GAIN)

Don't rely on server - that is very limited and only over the gui, not the gcodes being send.

In web-config i can see Add linear and constant correction to temperature readings (TEMP_GAIN) but where i need set the correction (can't see in the web)?

In configure.h i edited #define TEMP_GAIN 20 (from 0). It is Ok?

user

<a rel="nofollow" target="blank">user</a> said:

<blockquote class="Quote">

<a rel="nofollow" target="_blank">user</a> said:

<blockquote class="Quote">

<a rel="nofollow" target="_blank">Repetier</a> said:

In config tool it is
Add linear and constant correction to temperature readings (TEMP_GAIN)

Don't rely on server - that is very limited and only over the gui, not the gcodes being send.

In web-config i can see Add linear and constant correction to temperature readings (TEMP_GAIN) but where i need set the correction (can't see in the web)?

In configure.h i edited #define TEMP_GAIN 20 (from 0). It is Ok?

I set #define TEMP_GAIN 20 and it not work.
And how i can create a user defined temperature curve?

Repetier

Did you check values in eeprom. It might be that it did not refill eeprom with config values. In eeprom you see now for every heater a gain and bias. Bias is what you want to set. Equation is
new_temp = bias + gain * old_temp

For user defined curve you select for extruder user defined table 1 and it will appear at the end for editing. You just need to set resistance/temperature values from min to max temp and bit over there so it can trigger defect (resistance 0 and very high like 500kohm)

user

I can see gain but no bias. I still don't understand what I should put in #define TEMP_GAIN 0? 0 or 1?

https://imgur.com/a/plzNAJX</div><br/><br/>

user

Set to 1. It work ok. Thx. I Will test user defined curve.

Repetier

These gain settings are from PID temperature control - DO NOT USE THESE! These are for completely different usage and changing them will make temperature control not work like before!

I think you have no support compiled in which is why you do not see the correct values to change.