Hi All. Today I finish my Mendel tricolour and all works fine except one

3D Printing
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1

Hi All. Today I finish my Mendel tricolour and all works fine except one thing. Slave controller shows temperature on its termistor 60 degrees more then actually is. For example at start in log window i can see: T0:28.7 T1:88.4 T2:88.7 . Could anybody help me to solve this problem?

2

I’d say that either the wrong thermistors are selected in the firmware or that the slave board uses different pullup resistors than the main board (which would also mean that you’d have to choose a different thermistor setting in the firmware). That is, of course, assuming that all three hotends use identical thermistors.

3

How can i check/edit the configuration of my SLAVE Melzi controller? Or there is only one way - download from github last vesion -> edit configuration files -> upload new firmware?

4

The most disappointing thing that if i connecting to SLAVE controller i see a good temperature:
Connecting…
RepRapPro slave controller Version 1.1, 2013-05-15 restarted.
Temps:27.38 27.38
but when connectin to MASTER controller:
Connecting…
ok T0: 28.2/-273.1 T1: 87.8/-273.1 T2: 87.8/-273.1 B:29.3 /-273.1 @:0
Printer is now online.
Looks like some kind of Offset settings for thermistors…

5

Ok, then it’s definitely not the thermistor settings. By the way, does RepRapPro now default to absolute zero (Kelvin) instead of zero degrees Celsius? oO
Someone from @RepRap_Pro is probably going to be of better help here.

6

Already write to support. Lets see what they say.

7

I had a similar problem with my mono mendel, I haven’t manage to solve it, just live with it…tried updating firmware but got nowhere.

8

i just update firmware and everithing works fine now.

9

What software did you use to update your board?

10

Arduino IDE. I folowing this instruction: https://reprappro.com/documentation/mendel-tricolour/maintenance/

11

Thanks will give it another try…it’s been the case of 'if it works leave it alone ’

12

The issue is solved. Slic3r v1.0.1 does wrong calculation exactly for 2nd extruder (at brief look its multiply amount of extrusion by 10), beside this 1st & 3rd extruders calculated fine.