@dc42 said in Two stepper motors in parallel:
nect them to separate driver outputs.
If I understood properly, I don't need any expansion board for additional drivers. is that right?. My Duet 3 6HC can support 2 motors for y-axis, 1 motor for each x-axis and z-axis, and 1 for the extruder motor. e.g. M584 X0 Y1:2 Z3 E4.
Please correct me if that is not right. thank you for your prompt response.
@maddy said in Duet 3 Expansion Fan Output issue:
On the other note, it was suggested that to use high current outputs of a board for waterpump/airpump to better handle the current requirements of the motors. I tried to use heater output(out0) of the duet 3 expansion board for the air blower, it did not work. Any feedback on this, please?
It is now working when the terminal connections are reversed. While connecting the airpump to the board I followed the Wiring diagram of Duet3 Expan 3HC, https://duet3d.dozuki.com/Wiki/Duet_3_Expansion_3HC_Wiring_Diagram, the heater terminals on the board are opposite to the representation of the wiring diagram. I have the Duet 3 Expan 3HC V1.0 board.
Thank you @deckingman @Phaedrux @jay_s_uk your feedback is very helpful. After a couple of trials, I understood that the fan outputs of a board can ONLY be thermostatically controlled if they are linked to heaters of that board. For example, out6 of a duet3 expansion can only be thermostatically turned on if it is linked to the heaters (out0-3) of the expansion board in the M106 code.
In my case, I have heaters on the mainboard and the fans on the expansion board (in the above code), I tried to thermostatically activate the fans linked to the mainboard heaters, but it did not work.
I guess that the fan outputs have some kind of relationship with the heater outputs of a duet board, @dc42 can you please shed some light on this issue.
On the other note, it was suggested that to use high current outputs of a board for waterpump/airpump to better handle the current requirements of the motors. I tried to use heater output(out0) of the duet 3 expansion board for the air blower, it did not work. Any feedback on this, please?
@Phaedrux the fan works fine, I tried with code M106 P0 H-1 S1.
@deckingman Tried with fan0 and fan1. The duet3 MB controlled fan 0 (connected to out7) thermostatically, instead out7 of the duet3 MB, now I want to use out6 of duet3 expansion for thermostatically controlling the fan0.
The duet3 expansion fan terminals (out3-8) behaving strangely, what I mean is that the fan is always ON on most terminals (out3-8) even if they are not called in the config.g. Also, I tested all the terminals (out3-8) to fan0, one by one I enabled once in the config.g file, the fan is always ON in all cases even after disabling them in the config.g file. See the test config.g file, I tried to change the code 1.outX (X=3...8) in the Fans section(line 50 M950 code).
This behavior could be due to the latest firmware? I recently got the expansion board (duet3 exp v1.0) and updated the firmware 3.2.2. What do you suggest?
; Configuration file for Duet 3 (firmware version 3)
; executed by the firmware on start-up
;
; generated by RepRapFirmware Configuration Tool v3.2.3 on Fri Mar 12 2021 18:57:07 GMT-0500 (Eastern Standard Time)
; General preferences
G90 ; send absolute coordinates...
M83 ; ...but relative extruder moves
M550 P"Duet 3" ; set printer name
; Drives
M569 P0.0 S1 ; physical drive 0.0 goes forwards
M569 P0.1 S1 ; physical drive 0.1 goes forwards
M569 P1.0 S1 ; physical drive 1.0 goes forwards
M584 X0.0 Y0.1 Z1.0 ; set drive mapping
M350 X16 Y16 Z16 I1 ; configure microstepping with interpolation
M92 X640.00 Y640.00 Z640.00 ; set steps per mm
M566 X900.00 Y900.00 Z60.00 ; set maximum instantaneous speed changes (mm/min)
M203 X6000.00 Y6000.00 Z180.00 ; set maximum speeds (mm/min)
M201 X500.00 Y500.00 Z20.00 ; set accelerations (mm/s^2)
M906 X800 Y800 Z800 I30 ; set motor currents (mA) and motor idle factor in per cent
M84 S30 ; Set idle timeout
; Axis Limits
M208 X0 Y0 Z0 S1 ; set axis minima
M208 X150 Y150 Z30 S0 ; set axis maxima
; Endstops
M574 X1 S1 P"!io0.in" ; configure active-high endstop for low end on X via pin !io0.in
M574 Y1 S1 P"!io1.in" ; configure active-high endstop for low end on Y via pin !io1.in
M574 Z1 S2 ; configure Z-probe endstop for low end on Z
; Z-Probe
M558 P5 C"^io7.in" H5 F120 T1800 ; set Z probe type to switch and the dive height + speeds
G31 P500 X0 Y0 Z2.5 ; set Z probe trigger value, offset and trigger height
M557 X15:150 Y15:150 S20 ; define mesh grid
; Heaters
M308 S0 P"temp0" Y"thermistor" T100000 B4138 ; configure sensor 0 as thermistor on pin temp0
M950 H0 C"out0" T0 ; create bed heater output on out0 and map it to sensor 0
M307 H0 B1 S1.00 ; enable bang-bang mode for the bed heater and set PWM limit
M140 H0 ; map heated bed to heater 0
M143 H0 S120 ; set temperature limit for heater 0 to 120C
M308 S1 P"temp1" Y"thermistor" T100000 B4138 ; configure sensor 1 as thermistor on pin temp1
M950 H1 C"out1" T1 ; create nozzle heater output on out1 and map it to sensor 1
M307 H1 B0 S1.00 ; disable bang-bang mode for heater and set PWM limit
M143 H1 S280 ; set temperature limit for heater 1 to 280C
; Fans
M950 F0 C"1.out6" Q500 ; create fan 0 on pin 1.out6 and set its frequency
M106 P0 S0 H1 T45 ; set fan 0 value. Thermostatic control is turned on
; 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
; Custom settings are not defined
; Miscellaneous
M575 P1 S1 B57600 ; enable support for PanelDue
I have a fan (F0) connected to Out6 of Duet 3 expansion, and trying to activate the fan thermostatically with heater (H1), which is the Out1 of the Duet 3 Mainboard.
The fan F0 is not activated when the temp of H1 reaches the limit (T45), can somebody check the config.g file
; Heaters
M308 S0 P"temp0" Y"thermistor" T100000 B4138 ; configure sensor 0 as thermistor on pin temp0
M950 H0 C"out0" T0 ; create bed heater output on out0 and map it to sensor 0
M307 H0 B1 S1.00 ; enable bang-bang mode for the bed heater and set PWM limit
M140 H0 ; map heated bed to heater 0
M143 H0 S120 ; set temperature limit for heater 0 to 120C
M308 S1 P"spi.cs0" Y"rtd-max31865" ; configure sensor 1 as thermocouple via CS pin spi.cs0
M950 H1 C"out1" T1 ; create nozzle heater output on out1 and map it to sensor 1
M307 H1 B0 S1.00 ; disable bang-bang mode for heater and set PWM limit
M143 H1 S280 ; set temperature limit for heater 1 to 280C
M308 S2 P"spi.cs1" Y"rtd-max31865" ; configure sensor 2 as thermocouple via CS pin spi.cs1
M950 H2 C"out2" T2 ; create nozzle heater output on out2 and map it to sensor 2
M307 H2 B0 S1.00 ; disable bang-bang mode for heater and set PWM limit
M143 H2 S280 ; set temperature limit for heater 2 to 280C
M308 S3 P"spi.cs2" Y"rtd-max31865" ; configure sensor 3 as thermocouple via CS pin spi.cs2
M950 H3 C"out3" T3 ; create nozzle heater output on out3 and map it to sensor 3
M307 H3 B0 S1.00 ; disable bang-bang mode for heater and set PWM limit
M143 H3 S280 ; set temperature limit for heater 3 to 280C
; Fans
M950 F0 C"1.out6" Q500 ; create fan 0 on pin 1.out6 and set its frequency
M106 P0 S0.5 H1 T45 ; set fan 0 value. Thermostatic control is turned on
M950 F1 C"1.out7" Q500 ; create fan 1 on pin 1.out7 and set its frequency
M106 P1 S1 H-1 ; set fan 1 value. Thermostatic control is turned off
M950 F2 C"1.out8" Q500 ; create fan 2 on pin 1.out8 and set its frequency
M106 P2 S1 H-1 ; set fan 2 value. Thermostatic control is turned off
@Phaedrux @dc42 thank you for your prompt reply. Just going through the above Phaedrux post and the https://forum.duet3d.com/topic/17910/duet-3-6ch-out4-6-out7-9-max-current-question/3 something crossed my mind. The fan outputs4-9 of Duet 3MB 6HC can carry up to 2.5A if the jumper is set on to VIN,
Can I use output4-9 for brushless motors if the motor's current specification less than 2.5A?
Another question related to the above figure; the brushless motor current limit 3A, but the current available in out0-2 is 5Amps, would this be a problem for brushless motors because of higher current input?
Hello
I am planning to set up 12v air pump and water pump (both brushless), just want to make sure that the below setup is right. Would this setup work?
If I connect the brushed DC motors instead of brushless motors, do I need to use flyback diodes ? Do you recommend flyback diodes for the above stepup with brushless motors?
@Argo said in Z probe selection:
A30
Thank you, it makes sense while PINDA is not an IR sensor, I guess the only option is switch probe type and it is P5 mode. Thanks for the code.
I am using PINDA 2 (inductive type) for the z probe, I am not sure which Probe type to select while preparing config.g using configTool, Somebody please shed some light on this. I have seen M558 parameters, Probe type P0...P10, but its not clear. 
@Veti said in Config tool I/O Mapping:
r has names corresponding to the names in the config
I am using 1XD to connect with an external driver.
Is not that Tool L1LC similar to 1XD?, as 1XD is not yet available in the config tool, selecting Tool L1LC to map with the external driver would make any sense?