@dc42 said in Y-stepper noise:

T100000

Thanks 100000 times!
Now both thermistors can be read.

Hi dc42!

; Configuration file for Duet WiFi (firmware version 2.03)
; executed by the firmware on start-up
;
; generated by RepRapFirmware Configuration Tool v2.1.5 on Sat Jan 11 2020 15:38:33 GMT+0200 (Itä-Euroopan normaaliaika)

; General preferences
G90 ; send absolute coordinates...
M83 ; ...but relative extruder moves
M550 P"Leapfrog-Duet" ; set printer name

; Network
M552 S1 ; enable network
M586 P0 S1 ; enable HTTP
M586 P1 S0 ; disable FTP
M586 P2 S0 ; disable Telnet

; Drives
M569 P0 S0 ; physical drive 0 goes backwards
M569 P1 S1 ; physical drive 1 goes forwards
M569 P2 S1 ; physical drive 2 goes forwards
M569 P3 S1 ; physical drive 3 goes forwards
M569 P4 S1 ; physical drive 4 goes forwards
;M569 P5 R1 T2.5:2.5:5:0

;M584 U5;5

M584 X0 Y1 Z2 E3:4 ; set drive mapping

M350 X16 Y16 Z16 E16:16 I1 ; configure microstepping with interpolation
;M350 U16

M92 X66.67 Y66.67 Z654.02 E93.00:93.00 U654.02 ; set steps per mm

M566 X900.00 Y900.00 Z12.00 E120.00:120.00 ; set maximum instantaneous speed changes (mm/min)

;M566 U12.00

M203 X6000.00 Y6000.00 Z180.00 E1200.00:1200.00 ; set maximum speeds (mm/min)
;M203 U180.00

M201 X500.00 Y500.00 Z20.00 E250.00:250.00 ; set accelerations (mm/s^2)
;M201 U20.00

M906 X800 Y1600 Z1600 E800:800 I30 ; set motor currents (mA) and motor idle factor in per cent
;M906 U1600 I30

M84 S30 ; Set idle timeout

; Axis Limits
M208 X0 Y0 Z0 S1
;M208 U0 S1

                          ; set axis minima

M208 X210 Y250 Z200 S0 ; set axis maxima
;M208 U200 S0

; Endstops
M574 Z0 S0 ; set active low and disabled endstops
M574 X1 Y1 S1 ; set active high endstops
;M574 U0 S0

; Z-Probe
M558 P0 H5 F120 T6000 ; disable Z probe but set dive height, probe speed and travel speed
M557 X15:200 Y15:195 S20 ; define mesh grid

; Heaters
;M305 P0 T100000 B4138 R4700 ; set thermistor + ADC parameters for heater 0
;M143 H0 S120 ; set temperature limit for heater 0 to 120C
;M305 P1 T100 B3950 R4700 ; set thermistor + ADC parameters for heater 1
;M143 H1 S280 ; set temperature limit for heater 1 to 280C
;M305 P2 T100 B3950 R4700 ; set thermistor + ADC parameters for heater 2
;M143 H2 S280
; set temperature limit for heater 2 to 280C

M305 P0 T100000 B4138 R4700 ; set thermistor + ADC parameters for heater 0
M143 H0 S120 ; set temperature limit for heater 0 to 120C
M305 P1 T100 B3950 R4700 ; set thermistor + ADC parameters for heater 1
M143 H1 S280 ; set temperature limit for heater 1 to 280C
M305 P2 T100 B3950 R4700 ; set thermistor + ADC parameters for heater 2

M307 H1 A455.9 C183.2 D17.7 S1.00 V24.1 B0
M307 H2 A499.7 C172.7 D10.4 S1.00 V24.1 B0

;M570 H1 P4 T20 s1
; Fans
M106 P0 S0 I0 F500 H-1 ; set fan 0 value, PWM signal inversion and frequency. Thermostatic control is turned off
M106 P1 S1 I0 F500 H-1 ; set fan 1 value, PWM signal inversion and frequency. Thermostatic control is turned off
M106 P2 S1 I0 F500 H-1 ; set fan 2 value, PWM signal inversion and frequency. Thermostatic control is turned off

; Tools
M563 P0 D0 H1 F0 ; define tool 0
G10 P0 X0 Y0 Z0 ; set tool 0 axis offsets
G10 P0 R0 S0 ; set initial tool 0 active and standby temperatures to 0C
M563 P1 D1 H2 F0 ; define tool 1
G10 P1 X0 Y0 Z0 ; set tool 1 axis offsets
G10 P1 R0 S0 ; set initial tool 1 active and standby temperatures to 0C

; Custom settings are not defined

Hi droftarts

• all temperature sensors disconnected -> temp 2000C
  -E0 temperature sensor connected (100k measured) -> 2000C
  E0 temperature sensor connected to Rumba worked ok

I changed the configuration, but the temperature stays in 2000C as in picture 16 Jan 2020, 20:19

New fuse is installed, but no effect.

Thanks, droftarts.
I'll try this.

Now I received the external driver breakout board (hope it's the right one)
So how do I wire it?

The 10 amp fuse is ok

I told above that I boiled the thermistors when calibrated them and after that this happened.

I think there´s something wrong with the board.
Some fuse I guess?