Posts made by shiga

where to buy duex5 and a copy at a cheaper price

thank you, I think I understand, I will try!

@phaedrux yes, I understand this, how to assign an additional motor and a terminal block to it, what should I write config?

Hi. please explain how to use a stepper motor instead of a servo, the idea is to select a tool by rotating the stepper motor in which the initial point is the first extruder (the limit switch for the initial position should work and the rest of the tools are the value that the motor will be instructed to)

Hello friends! who will tell you how to implement an additional motor and limit switch, for example, for changing the tool, or, for example, cleaning the nozzle with a brass brush?
I know that it is much easier to implement this all on a servo drive, but you need it on a stepper motor.
the algorithm of actions is as follows: the end switch is needed to set the starting point, before the start of printing, the head is sent (Zn), the brush extends and makes a movement back and forth, then goes into the parking lot.
algorithm # 2: the head rises to a height (Zn), the tool moves out (let's say a laser) sticks to the magnets, the head makes a movement to the side to prevent the magnets from sticking, the handle is parked from the tool; the head goes further to work.

@noisettetbou
PWM can be adjusted, PWM: 50KHz-20KHz / 3.3V-12V. there is nothing terrible, no, the same laser works fine for me!

@noisettetbou what laser do you use? throw off the link ...

@shiga said in Laser always on:

@arhi I'm looking at the current consumption.

I look at the current consumption, and compare it with the PWM of the signals from the servo tester.

@arhi I'm looking at the current consumption.

@arhi Many thanks for the help! the problem was resolved, it was a bad 74HCT02, from a batch of 5 pieces all were inoperative, replaced from another shop and it all worked!
small question: which program is the best to use for engraving with DUET?

@arhi said in Laser always on:

so if you do
G1X10S0

your laser will move and will be OFF
and if you do then
G1X20S255

it will move and be ON but not 100% ?

yes, quite right. g1x10s10 is dim, g1x10s100 is brighter, g1x10s255 is off. and if g1x10s250 also shines like on s100.

@arhi I did as you said, I connected the pwm directly, the laser was controlled, but not at full power, it was very dim, and did not shoot at S255. The macro to turn on the laser mode is as follows:
M563 P0 D-1 H-1; clear tool
M563 P0 D0; create a tool - no heaters
M307 H3 A-1 C-1 D-1; Clear heater
M452 P3 R255 F20000 I0
what should I do next?

@arhi please tell me how you did it? how did you raise it to 5 volts? And what was the piece of config.g and the circuit at least by hand, how did you connect it?

@Phaedrux updated. this solution didn't help!

@shiga said in Laser always on:

@dc42 да 7 булавок на земле, я делаю это в соответствии с инструкциями Вики

pin heater 3 is present at 3.3 volts, switching on without sd card is also present at 3.3 volts.

@dc42 да 7 булавок на земле, я делаю это в соответствии с инструкциями Вики

Hello everyone, please help me with my problem. There is a homemade delta on DUET that works perfectly, I connected the laser "http://nejetool.com/module_20w.html" to my DUET according to the diagram from "https://duet3d.dozuki.com/Wiki/Laser_PWM_control#Section_Controlling_a_PWM_Laser_with_a_Duet_2_Board" when the DUET is turned on, the laser is constantly on and is not controlled by any G-code, does not turn off does not change the power.!

Firmware Name: RepRapFirmware for Duet 2 WiFi/Ethernet
Firmware Electronics: Duet WiFi 1.02 or later
Firmware Version: 2.02(RTOS) (2018-12-24b1)
WiFi Server Version: 1.22
Web Interface Version: 1.22.6

My config.g
; Configuration file for Duet WiFi (firmware version 1.20 or newer)
; executed by the firmware on start-up
;
; generated by RepRapFirmware Configuration Tool on Thu Jul 12 2018 20:54:00 GMT-0500 (Central Daylight Time)

; General preferences
;G90 ; Send absolute coordinates...
;M83 ; ...but relative extruder moves

;*** The homed height is deliberately set too high in the following - you will adjust it during calibration.

; After G32 auto-calibrate, copied from config-override.g
; Note: G31 Z (below) affects M665 H, and this is NOT yet calibrated.
M665 L264 R124 H240 B120.0 X-0 Y-0 Z0
M666 X-0 Y0 Z0 A0 B0

; Network
M550 PAKL Plus ; Set machine name
M552 S1 ; Enable network
;*** Access point is configured manually via M587
M586 P0 S1 ; Enable HTTP
M586 P1 S0 ; Disable FTP
M586 P2 S0 ; Disable Telnet

; Drives
M569 P0 S0 ; Drive 0 goes forwards
M569 P1 S0 ; Drive 1 goes forwards
M569 P2 S0 ; Drive 2 goes forwards
M569 P3 S0 ; Drive 3 goes forwards
M350 X16 Y16 Z16 E16 I1 ; Configure microstepping with interpolation
M92 X80 Y80 Z80 E400 ; Set steps per mm
M566 X300 Y300 Z300 E300 ; Set maximum instantaneous speed changes (mm/min)
M203 X12000 Y12000 Z12000 E12000 ; Set maximum speeds (mm/min)
M201 X1000 Y1000 Z1000 E1500 ; Set accelerations (mm/s^2)
M906 X1000 Y1000 Z1000 E800 I30 ; Set motor currents (mA) and motor idle factor in per cent
M84 S30 ; Set idle timeout

; Axis Limits
M208 Z0 S1 ; Set minimum Z

; Endstops
M574 X2 Y2 Z2 S1 ; Set active high endstops

; Z-Probe
M558 P4 H6 F120 T6000 ; Set Z probe type to switch and the dive height + speeds
G31 P1000 X0 Y0 Z13.48 ; Set Z probe trigger value, offset and trigger height
M557 R105 S20 ; Define mesh grid

; Heaters
M305 P0 T100000 B4138 C0 R4700 ; Set thermistor + ADC parameters for heater 0
M143 H0 S150 ; Set temperature limit for heater 0 to 120C
M305 P1 X501 R4700 ; Set thermistor + ADC parameters for heater 1
M143 H1 S350 ; Set temperature limit for heater 1 to 280C

; Fans
M106 P0 S0.3 I0 F500 H-1 ; Set fan 0 value, PWM signal inversion and frequency. Thermostatic control is turned off
M106 P1 S1 I0 F500 H1 T45 ; Set fan 1 value, PWM signal inversion and frequency. Thermostatic control is turned on
M106 P2 S1 I0 F500 H1 T45 ; Set fan 2 value, PWM signal inversion and frequency. Thermostatic control is turned on

; Tools
M563 P0 D0 H1 ; 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

; Automatic power saving
M911 S10 R11 P"M913 X0 Y0 G91 M83 G1 Z3 E-5 F1000" ; Set voltage thresholds and actions to run on power loss

; Custom settings are not configured

; Miscellaneous
M501 ; Load saved parameters from non-volatile memory
T0 ; Select first tool

M307 H3 A-1 C-1 D-1 ; Disable Heater output on H3
M452 P3 S1 R1.00 F2000 ; Enable Laser mode, on output 3 (heater 3), with max intensity being 1.00, and a PWM frequency of 2000
M571 P3 F200 S0IMG_20200807_203959.jpg

My mail: d7a7r7@mail.ru