Duet 2 Wifi speeds

Phaedrux

@kre8 said in Duet 2 Wifi speeds:

@Phaedrux So so i just type M589 C, hit enter and then type in a channel number??

Not exactly. M589 C1 as a single command would set channel 1. M589 C11 would set channel 11.

kre8

@Phaedrux Got it...i'll give that a try.

Is there someplace to check that the channel was changed after i do that command?

Phaedrux

If you have a windows 10 laptop you can try this wifi analyzer to get some more information on your wifi environment.

https://www.microsoft.com/en-ca/p/wifi-analyzer/9nblggh33n0n?activetab=pivot:overviewtab

If you have a Mac laptop you can use the built in wifi diagnostics tool.

https://support.apple.com/en-za/guide/mac-help/mchlf4de377f/mac#:~:text=Press and hold the Option,Fi status in menu bar”.

Phaedrux

@kre8 said in Duet 2 Wifi speeds:

Is there someplace to check that the channel was changed after i do that command?

You can send most gcodes by themselves without any parameters and it will echo back what the current values are. So send M589 by itself.

kre8

So i've got the Duet set to channel 1 and then ran the analyzer. Signal looks good however im still on transferring at 70-100kbs....and actually now that i've spec'd a channel, it seems to constantly error out during a file upload.

Modix Signal 2.jpg
Modix Signal 1.jpg

Phaedrux

@kre8 said in Duet 2 Wifi speeds:

So i've got the Duet set to channel 1 and then ran the analyzer.

According to the photo you're still on channel 6. (and it looks like some miscreant is on channel 7, tsk tsk)

Try including the C parameter when sending the M589 to create the access point mode.

M589 S"yourssid" P"password" C"1"

kre8

@Phaedrux said in Duet 2 Wifi speeds:

Try including the C parameter when sending the M589 to create the access point mode.
M589 S"yourssid" P"password" C"1"

When i follow this sequence substituting my details, i get a error for bad or missing parameters

M589 S"MODIX" P"KRE8LABS" C"1" is what i entered.

Phaedrux

Try C1 without quotes.

kre8

@Phaedrux said in Duet 2 Wifi speeds:

Try C1 without quotes.

No dice!

Phaedrux

What does it tell you when you send M589 by itself?

kre8

@Phaedrux said in Duet 2 Wifi speeds:

What does it tell you when you send M589 by itself?

Own SSID: MODIX IP=192.168.1.100 GW=0.0.0.0 NM=0.0.0.0

Phaedrux

Let me setup my own AP mode to test with.

Phaedrux

Sorry, looks like we need to specify an IP address as well. Not optional.

So try adding the I parameter

M589 S"MODIX" P"KRE8LABS" I192.168.1.1 C1

That worked for me.

Phaedrux

I created a macro to make it easier to test

; Configure Access Point Mode
;
M291 R"Create Duet Access Point? Y/N" P"This will create duetwifi-AP SSID to connect to." S3 T10
M552 S0			; Disable network module
G4 S5			; wait 5 seconds
M589 S"duetwifi-AP" P"duetwifi" I192.168.1.1 C1			; Add duet wifi SSID to remembered networks list
G4 S5			; wait 5 seconds
M552 S2			; reenable wifi module
M291 R"duetwifi-AP SSID added." P"SSID password is duetwifi."

You can save that as duetapmode in the macros folder and then call it with M98 P"duetapmode" to save some typing. Modify it with your SSID and password.

Then edit your config.g to change M552 S1 to be M552 S2 This will enable the access point at startup.

kre8

@Phaedrux The printer is in the middle of a build so i'll need to wait till tomorrow to test this out. Thanks for your help so far!!!

kre8

@Phaedrux That was the ticket! It's on channel 1 now and the WiFi analyzer shows it's not competing with anything else on that channel. I'm uploading that 75mb file right now and i am getting 145KiB/s

I ordered the ethernet daughter card and ill have one of our electrical engineers modify that for me and we will just hardware to the printer. This should improve our transfer speeds dramatically...i hope!

kre8

There has got to be something else contributing to my speed issue. Trying to send another file right now and i'm back down to 55KiB/s upload speeds.

Phaedrux

There are two more variables we can eliminate.

One is the location. If you could move the printer somewhere else to see if it's the environment.

The other is the sending laptop. Try with another computer.

If neither of those changes makes a difference than it could be the wifi module itself.

One other thing we could try is simply reflashing the wifi server firmware.

Upload this bin file to the system tab in DWC. It should be detected and flash itself. If not, after uploading, send M997 S1 in the gcode console.

https://github.com/Duet3D/RepRapFirmware/releases/download/3.0/DuetWiFiServer.bin

Phaedrux

@kre8 said in Duet 2 Wifi speeds:

This should improve our transfer speeds dramatically...i hope!

Yes they should be better, but don't get our hopes too far up. The Duet is a memory constrained device writing to an SD card, so there isn't a lot of buffer available, meaning ultimately your transfer speeds even over a wire are going to be capped around 500-800KB/s. Still much faster than you're currently seeing, but not multi-megabyte speeds you may be hoping for.

JoergS5

I know three additional possible reasons not discussed yet:

one is that antivirus checker slows down (less probable, if the laptop is fast)
the network MTU size of the sender is bigger than allowed by WLAN, so the network packages need to be repacked before sending
the WLAN encryption could slow down speed also (with a slow Laptop)

As proposed I would try another sender, and then I would search a good WLAN Analyzer.