Identical artifacts/issues on two parts on the same print job

Veti

your thermistor configuration is wrong. B4138 is the default.
but that should not cause layer shifts.

Turbo

@Veti if it works is it wrong? i dont ever have temp issues.

Veti

@Turbo
you might be printing at the wrong temperature.

Turbo

@Veti what would be the correct value?

Veti

@Turbo
what is the exact type of thermistor you have?

Turbo

@Veti the one that comes with the e3d v6 ecosystem of hotends. nothing special.
Seems to be 104gt from google results

Veti

if its a genuine e3d then its B4725 C7.06e-8

Turbo

@Veti so would the code just look like...?

M305 P1 T100000 B4725 C7.06e-8 R4700    ; Set thermistor + ADC parameters for heater 1

also what about the bed heater? its a keenovo assembly

Veti

in rrf2 yes

Turbo

@Veti newbie question but how can i tell if i have rrf2 or not? thats the code on the printer in question, and this is the code on my other printer. Different M commands

M308 S0 P"bedtemp" Y"thermistor" T100000 B4725 C7.06e-8 ; configure sensor 0 as thermistor on pin bedtemp
M950 H0 C"bedheat" T0                                   ; create bed heater output on bedheat and map it to sensor 0
M143 H0 S120                                            ; set temperature limit for heater 0 to 120C
M307 H0 B0 S1.00                                        ; disable bang-bang mode for the bed heater and set PWM limit
M140 H0                                                 ; map heated bed to heater 0
M308 S1 P"e0temp" Y"thermistor" T100000 B3988           ; configure sensor 1 as thermistor on pin e0temp
M950 H1 C"e0heat" T1                                    ; create nozzle heater output on e0heat and map it to sensor 1
M143 H1 S280                                            ; set temperature limit for heater 1 to 280C
M307 H1 B0 S1.00                                        ; disable bang-bang mode for heater  and set PWM limit

also i now realize i have the bed therm for this config set as an e3d therm and not the actual one. i think theyre backwards.

Veti

using M115
https://duet3d.dozuki.com/Wiki/Gcode#Section_M115_Get_Firmware_Version_and_Capabilities

Veti

@Turbo said in Identical artifacts/issues on two parts on the same print job:

M906 X1000 Y1000 Z1000 E850:850 I50 ; Set motor currents (mA) and motor idle factor in percent

what motors have you got?

Turbo

@Veti

FIRMWARE_NAME: RepRapFirmware for Duet 2 WiFi/Ethernet FIRMWARE_VERSION: 2.05.1 ELECTRONICS: Duet WiFi 1.02 or later FIRMWARE_DATE: 2020-02-09b1

Veti

so you are on rrf2 here.

Turbo

@Veti mototrs are part no 17hs19-2004s1.
I dont think theyre the culprit because i have had good prints before with them. The printer sat for 6 months or so so i came back to a bunch or random issues and not remembering much about the printer

Veti

@Turbo said in Identical artifacts/issues on two parts on the same print job:

17hs19-2004s1.

those are 2A motors. you are running them with not enough current. set the current to 1500ma

Turbo

@Veti done. would that cause my issues or could there be more? its ran fin on 1000mA current since i got it, but now that i think of it, the prints were never perfect.

Veti

it could.

Turbo

@Veti also would you know where i can find a chart or something for setting thermistors? i need to adjust both of my printers. this is the bed heater NTC 100K thermistor ( Beta 25/50 3950K-1%

Veti

@Turbo said in Identical artifacts/issues on two parts on the same print job:

3950K

thats the beta value