Weird Issue with Duet Wifi Wifi connection
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2 duet wifi boards work fine as far as wifi connection when plugged into pc, i.e. blue wifi light flashes then goes to solid when connection happens, but when I install either one on my machine and power up blue light on wifi module doesn't do anything and no connection occurs. I'm baffled. Here's the config.g which is identical in both controllers.
; Configuration file for Duet WiFi (firmware version 3.3)
; executed by the firmware on start-up
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; generated by RepRapFirmware Configuration Tool v3.3.10 on Sat Feb 05 2022 13:17:24 GMT-0500 (Eastern Standard Time); General preferences
G90 ; send absolute coordinates...
M83 ; ...but relative extruder moves
M550 P"DBot CoreXY" ; set printer name
M669 K1 ; select CoreXY mode; 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 S0 ; physical drive 1 goes backwards
M569 P2 S0 ; physical drive 2 goes backwards
M569 P3 S0 ; physical drive 3 goes forwards
M584 X0 Y1 Z2 E3 ; set drive mapping
M350 X16 Y16 Z16 E16 I1 ; configure microstepping with interpolation
M92 X80.00 Y80.00 Z400.00 E852 ; set steps per mm
M566 X900.00 Y900.00 Z60.00 E120.00 ; set maximum instantaneous speed changes (mm/min)
M203 X6000.00 Y6000.00 Z300.00 E1200.00 ; set maximum speeds (mm/min)
M201 X500.00 Y500.00 Z20.00 E250.00 ; set accelerations (mm/s^2)
M906 X800 Y800 Z800 E1200 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 X315 Y180 Z300 S0 ; set axis maxima; Endstops
M574 X1 S1 P"!xstop" ; configure switch-type (e.g. microswitch) endstop for low end on X via pin xstop
M574 Y1 S1 P"!ystop" ; configure switch-type (e.g. microswitch) endstop for low end on Y via pin y
M574 X1 Y2 S1 ; X home to min. Y home to max. Normally Closed limit switches.
M574 Z1 S2 ; Define Z to use Probe. Home to Min; Z-Probe
M950 S0 C"exp.heater3" ; create servo pin 0 for BLTouch
M558 P9 C"^zprobe.in" H5 F120 T6000
G31 P500 X-41.8 Y32.2 Z2.2
M557 X10:320 Y0:190 S50 ; define mesh grid; Heaters
M308 S0 P"bedtemp" Y"thermistor" T100000 B4138 ; 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
M307 H1 B0 R2.550 C164.6 D6.37 S1.00 V24.2
M140 H0 ; map heated bed to heater 0
M143 H0 S120 ; set temperature limit for heater 0 to 120C
M308 S1 P"e0temp" Y"thermistor" T100000 B4138 ; 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
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"fan0" Q500 ; create fan 0 on pin fan0 and set its frequency
M106 P0 S0 H-1 ; set fan 0 value. Thermostatic control is turned off
M950 F1 C"fan1" Q500 ; create fan 1 on pin fan1 and set its frequency
M106 P1 S1 H1 T45 ; set fan 1 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
M501 -
@gbusy24 are the 3.3v and 5v LEDs on when powered from 24v?
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@jay_s_uk I've unhooked the board from printer now, but I'm pretty sure I a was only seeing the 3.3 lit. I noticed that both weren't lit.
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@gbusy24 then theres a good chance you've blown the 5v rail.
post some high res pictures of the board -
@jay_s_uk Yeah, but when I plug it back into computer via usb, everything is fine.
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@gbusy24 USB provides a 5V supply to the board so it will function even if you've blown the regulator
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@engikeneer So you're telling me both of these boards are now trash?
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@gbusy24 well you have a few options.
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try replacing the regulator. From memory it's one of the reasonably sized components so shouldn't be too bad if you have some soldering experience (or have a friend who does)
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get an external 5V power supply and use the Ext5V pin (next to the Vin terminals). I do this on mine anyway as I have a relay to kill the 24V supply via PS_ON, but keep the CPU live so I can see what happened etc.
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provide 5V via USB if you have a suitable one (e.g. an old phone charger?). Check the current rating though.
With all of these however, I think you need to try and work out what killed the 5V regulator. Most likely something miswired shorted it to ground...
It may have also taken our other things too, so I'd suggest inspecting the board for other signs of damage, or upload some high res photos here. You may have got away with it though if it works fine with USB power...
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@gbusy24 Hard to say, when you had the board wired up to the printer, did you try connecting to a PC? If you did, did the WiFi work?
Some things to try....
First step would be to look very carefully at the board to see if any of the chips look damaged. I'd be looking particularly closely at the 5V regulator and associated components. You could also post some well lit, high resolution pictures of the board here and folks that know what to look for may be able to help.
Second step would be to try just connecting 24V (or 12V) to the board and see if it works and what lights come on. If it works then I'd guess that something that was connected when the board was in the printer is causing a problem with either the 5V or 3.3V supply. If it does not work then it is likely that the 5V regulator may be damaged.
If the 5V regulator is damaged you need to work out why. Have both boards been installed in the same printer?
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@gloomyandy To answer you and engikeneer, I have been replacing the hotend and print carriage and I am a good solderer. I plugged usb into it while it was hooked to printer, but that didn't resolve anything. My first course of action will be to thoroughly inspect printer for shorted wiring. I've visually inspected one board up close, but can't find anything wrong physically. Can one of you point me to the location of the 5v regulator?
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Check the chip marked U3. Post some photos.
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@phaedrux I found that chip, but I have problems figuring out how to upload photos here. Can you help? Thanks
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This post is deleted! -
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No smoldering craters, but that doesn't always happen.
Did you say you had tried connecting USB for 5v power while connected to 24v as well?
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@phaedrux yes I said that
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@phaedrux what is this chip responsible for? It doesn't look like a voltage regulator from my limited knowledge
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@gbusy24 said in Weird Issue with Duet Wifi Wifi connection:
@phaedrux yes I said that
And there is no 3.3 or 5v LED lit when connected both to USB and 24v, but there is when only connected to USB?
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@gbusy24 said in Weird Issue with Duet Wifi Wifi connection:
@phaedrux what is this chip responsible for? It doesn't look like a voltage regulator from my limited knowledge
Can you post some photos of the entire board? Or both boards?
Is there anything in the recent history of the boards that may explain a shortp
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@phaedrux I have 3.3 volts regardless
