Posts made by Gabriel

@o_lampe thanks for your reply. It's a chain drive that is moving some parts in circle.

The supply voltage of 36 V is no problem, as we modified the Duet so it can be used up to 48 V. The thing is, the chain drive can also manually be driven without the plug put into the wall outlet. And this is even wanted!

Greetings
Gabriel

Hello everyone,

just one short question:

• is there any possibility to destroy the Duet 3 6HC or its stepper drivers because of moving the axes manually in idle mode or when VIN is turned off?

I remember the LEDs of the stepper drivers of the Duet 2 turned on while moving an axis manually.

Thanks in advance and greetings from franconia,
Gabriel

@jay_s_uk
Hi Jay,
thanks for your fast reply. This workaround removes the error message, which is definitely an improvement!

From my point of view, as we use the Duet 3 in various machines as subcontrollers for axis systems, it would be desirable, that the webinterface only shows the axes which are defined in the config.g. Maybe it will be realized in future firmware versions.

Greetings
Gabriel

Hello everyone,

I am using the DUET 3 for an axis system inside a climate chamber which has a carousel as x-axis to move parts in circle and a z-axis to get in touch with the parts every once in a while.

Obviously there is no y-axis configured but in the web interface the y-axis is shown anyways. Is there a possibility to just show the x- and the z-axis? There is the M584 P2 / P1 command but this doesn't hide axes located in between (normal order is xyz abc/uvw). So it is possible to just show the x or x and y or x, y and z.

So all in all the question is:
Is it possible to realize that only the x- and the z-axis are shown in the web interface? also I would like to avoid the error message when homing all axes, which indicates, that y couldn't be homed.

Thank you very much in advance and greetings from bavaria,
Gabriel

; Configuration file for Duet 3 (firmware version 3)
; executed by the firmware on start-up
;
; generated by RepRapFirmware Configuration Tool v3.1.10 on Tue Dec 15 2020 13:39:59 GMT+0100 (Mitteleuropäische Normalzeit)

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

; Network
M551 P"DUMMYPW" ; set password
M552 P192.168.50.20 S1 ; enable network and set IP address
M553 P255.255.255.0 ; set netmask
M554 P192.168.50.1 ; set gateway
M586 P0 S1 ; enable HTTP
M586 P1 S0 ; disable FTP
M586 P2 S1 ; enable Telnet

; Drives
M569 P0.0 S1 ; physical drive 0.0 goes forwards
M569 P0.1 S0 ; physical drive 0.1 goes forwards
M584 X0.0 Z0.1 P3 ; set drive mapping
M350 X16 Z16 I1 ; configure microstepping with interpolation
M92 X132.615 Z1066.67 ; set steps per mm
M566 X1500 X1500 ; set maximum instantaneous speed changes (mm/min)
M203 X24000 Z1200 ; set maximum speeds (mm/min)
M201 X500 Z100 ; set accelerations (mm/s^2)
M906 X2800 Z2800 I5 ; set motor currents (mA) and motor idle factor in per cent
M84 S5 ; Set idle timeout

;Break
;M950 P2 C"out1" ; Naming Break Output 2nd Axis (Z)

; Axis Limits
M208 X-20000 Z0 S1 ; set axis minima
M208 X20000 Z63 S0 ; set axis maxima

; Endstops
M574 X1 S1 P"!io1.in" ; configure active-high endstop for low end on X via pin !io01in
M574 Z1 S1 P"!io0.in" ; configure active-high endstop for low end on Z via pin !io0.in

@fcwilt Yes, that's it. I connect to the firmware via http-request.

Let's say we have the following case: Someone processes a movement with a specific feed rate, for example F1000. Afterwards he/she wants to increase the value by 500, but doesn't know the last F-value which was specified in the first run. To increase the value by 500 I need to know the last specified F-parameter to add the increment.

THANK you very much!

@chrishamm Thanks for your answer. The requested speed is only displayed while a print or move is running. I need to know the last value which was defined bei G1 Fnnn.

Hello together,

I would like to know, if there is a possibility to read the currently set speed (as set via G1 Fnnn). While the machine is working the current and top speed is displayed correctly.

The goal is to change the speed by using an incremental value.

The max speed is readable at the machine properties page.

Thanks in advance,
Gabriel

Perfect, THANKS!!

Hello all together,

I remember a github page from chris hammacher which explained the connection between Web Control and RepRap Firmware. For example, he wrote how to connect via HTTP-Request (rr_status?type=001), which timeouts need to be taken account to and more. Unfortunately I can't find it anymore. Was it deleted?

I am about to create a LabVIEW based user interface.

Thanks in advance,
Gabriel

It works now as expected. Perfect!

@dc42 Of course, I completely understand. Anyways thanks a lot!

Thank you very much! This is the best support ever!

Hi dc42,

yes, just a single Z probe. It doesn't matter if I try G30 or G30 S-1. Firmware is

Firmware Name: RepRapFirmware for Duet 2 WiFi/Ethernet
Firmware Electronics: Duet Ethernet 1.02 or later
Firmware Version: 2.02(RTOS) (2018-12-24b1)
Web Interface Version: 1.22.6

Thanks for your fast answer,
Gabriel

Hello everybody,

I mentioned a strange behaviour.
My coordinate system is set in the center of the working space, because there is the pivot point of my goniometer stage which results in the u and v axis. When I use the command G30 to start a single probe, the movement direction is always in the direction of Z = 0. That means, if the nozzle is right above the goniometer stage at Z = -80, G30 moves the nozzle up. If the nozzle is at Z = 10, it moves down.

Is there any possibility to force the movement to go further minus?
My config.g

Thanks a lot in advance.

Gabriel

Thanks 3ddevil for your fast reply. I'll try one of your solutions. As long as the voltage is in the range between trigger value 0 and 1000 it shouldn't be dangerous, right?

Thanks a lot in advance.

Hello everybody,

I successfully use a strain gauge with an amplifier at the entrance of the Z-probe. The amplifier has an output voltage of -10 V to +10 V for -20 N to +20 N. Which maximum voltage is supported in the long term with the input of the Z-probe? Is the Z-Probe value equivalent to the voltage?

So far, no problems have occurred.

Thank you in advance,
Gabriel

Perfect, thanks a lot! It works as expected.

Hi alltogether,

I would like to know, if it's necessary to use a Flyback Diode (discussed in different threads) for the control of an electronic magnet using a fan port at the Duex5 expansion board.

I've got a 24V power supply and use the internal power converter of the Duex5 to reduce the voltage to 12V needed for the electronic magnet.

Since revision 1.02, the Duet Board has the integrated Flyback Diodes for the fan ports, so I was wondering if the Duex Board got them, too.

Thanks in advance,
Gabriel