Looks like it is set to 5:
#define TEMP_SENSOR_0 5 // 11-MK8 5-Aero
What is the best way to change it?
3d Printers are a pain in the… That is why I need 3 different ones… and want more. 
Did you flash it yourself? You need to change it and reflash.
AFAIK, there isn’t a way to change that in EEPROM, it includes a different temp table when you change that.
Run M503 first and save the output. I try to make sure any EEPROM settings I change in the firmware when I make them so the next flash is right.
I flashed it myself. I made the change to 11 but still have the same issue. Filament does seem to go through but takes some pressure to get it through.
I’m not sure if this is helpful:
11:26:27.067 : echo:Hardcoded Default Settings Loaded
11:26:27.067 : echo: G21 ; Units in mm (mm)
11:26:27.067 : echo: M149 C ; Units in Celsius
11:26:27.067 : echo:Filament settings: Disabled
11:26:27.072 : echo: M200 D1.75
11:26:27.072 : echo: M200 D0
11:26:27.072 : echo:Steps per unit:
11:26:27.076 : echo: M92 X100.00 Y100.00 Z400.00 E837.00
11:26:27.076 : echo:Maximum feedrates (units/s):
11:26:27.076 : echo: M203 X150.00 Y150.00 Z15.00 E24.00
11:26:27.080 : echo:Maximum Acceleration (units/s2):
11:26:27.080 : echo: M201 X2000.00 Y2000.00 Z100.00 E3000.00
11:26:27.084 : echo:Acceleration (units/s2): P<print_accel> R<retract_accel> T<travel_accel>
11:26:27.084 : echo: M204 P2000.00 R3000.00 T2000.00
11:26:27.088 : echo:Advanced: B<min_segment_time_us> S<min_feedrate> T<min_travel_feedrate> J<junc_dev>
11:26:27.092 : echo: M205 B20000.00 S0.00 T0.00 J0.02
11:26:27.092 : echo:Home offset:
11:26:27.092 : echo: M206 X0.00 Y0.00 Z0.00
11:26:27.096 : echo:Material heatup parameters:
11:26:27.096 : echo: M145 S0 H196 B62 F0
11:26:27.096 : echo: M145 S1 H240 B110 F0
11:26:27.096 : echo:PID settings:
11:26:27.100 : echo: M301 P17.98 I0.98 D83.62
11:26:27.100 : echo:Stepper motor currents:
11:26:27.100 : echo: M907 X750 Z750 E950
You need to change the Z steps as well. the thermistor and Z steps go together,
Alright. Now we are getting somewhere.
Is there a PID tutorial for the MP3DP?
I see a calibration cube printing now…
?
IIRC there an auto PID tune gcode command…
M303:
http://marlinfw.org/docs/gcode/M303.html
It’s pretty simple, actually. Don’t be intimidated. There is a Tom video on it somewhere though.
Should be something like:
M303 S210 U1
<wait>…put these numbers in your firmware Configuration.h…
M500
Before:
echo:PID settings:
echo: M301 P17.98 I0.98 D83.62
After:
PID Autotune finished! Put the last Kp, Ki and Kd constants from below into Configuration.h
#define DEFAULT_Kp 15.64
#define DEFAULT_Ki 1.01
#define DEFAULT_Kd 60.56
So I need to add these to the Configuration.h file and flash the firmware to the RamBo now I guess.
My first print off the MP3dP:
[attachment file=“2019-01-09 15.02.28.jpg”]
The U1 should have set them, and M500 will save them to EEPROM. Putting them in Configuration.h is just to make sure next time you flash it, you will have those settings.
Awfully nice looking little cube there.
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First print?! Dang, Nice work
Putting the MP3DP to work. This will be my 3rd 3D printer. I’m ready for number 4…
[attachment file=84083]
I think my next printer is going to have to be BIG. like Real Big.
Like how big? Zltech has a 20 pack of 500mm black aluminum extrusion for $69.95. I was going to do 300x300 but maybe I should scale it up a bit.
I’m not sure at what point I need to go to larger extrusion…
I’m not ready to get another printer yet. I just know the next one is going to be BIG. Big enough to seem TOO BIG.
I have a handful of nozzles of different sizes that I’m going to experiment with soon, and I’m wondering if my hotend can keep up. I think the biggest one is 1.0mm. I don’t print fast, so maybe it will?
I’ve been printing these and they seem to take FOREVER:
So a couple of times in a row I have gotten the Thermal Runaway for the bed warning. I have a feeling it might be the fan blowing on the bed possibly? After a few reboots I was able to print a piece in the lower left corner.
Okay, I changed my mind. I’m going to go for the big one. 400 x 400 x 500. It might take me a few years to build but who’s counting…
What was the bed temp you were trying to maintain? You did not enable the bed PID did you?