@brian i have resolved the connection problem following the advice on this post https://www.instructables.com/Duet-WiFi-Activate-and-Connect-the-WiFi-When-It-Do/

@t3p3tony I think there is a step missing in the calibrate the Z probe trigger height.

I followed the steps over and over again and the bed kept stopping at a distance too far from the nozzle. Then it occurred to me that the z value in the config.g file may be adding to the value the duet was reporting. So i set that value to 0 and then the bed when all the way up and too far. So then i used trial and error in the config file to get it just right. It took many tries but at last count it worked right. Final value so far is 2.87.

@brian i have resolved the connection problem following the advice on this post https://www.instructables.com/Duet-WiFi-Activate-and-Connect-the-WiFi-When-It-Do/

My home network changed and as a result my duet wifi 2 no longer connect to the internet. It was working fine and i have forgotten how i got it working a year or two ago.

I connected the panel due thinking i just had to search for a new IP address but no it reports No known networks found. And every command i send doesnt produce anything different.

I connected with a usb cable and started Yat, but i cant seem to get anything there either.

I checked windows with the devmgmt.msc and check Ports (com & LPT) and duet is not listed, only Electronic Team Virtual Serial Port (com1 com2), not sure if duet was listed there before or not. I do recall doing something there before but dont remember what.

If anyone can assist i'd appreciate it. Thx.

@dc42 ok i changed the distance from 4 mm to 1.5 mm and that worked. Thanks. Dont know why it worked so long before.

@phaedrux glass, i use sticky white labels on the home area, has worked for years. will try to upload a photo

@phaedrux yes

I replaced my ir sensor a few months ago and it has been working ok. Then suddenly it no longer stops when it reaches the proper distance from the bed. So i thought it was somehow defected and purchased another from (Filastruder in the states). I installed it today and it does exactly the same thing. When the z is homing it slows down at the same position as it always did, but then doesnt stop. I made no changes to the config.g or anything else before this happened. At start up the ir sensor flashes 4 times. All the wiring is the same as before. Here is my config setting:
M558 P1 H3 F200 T1000 ;smart IR Z probe, (H)dive height 3mm, probe speed 200mm/min, travel speed 5000mm/min travel speed
G31 X0 Y0 Z0 P500

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: 1.23
Web Interface Version: 1.22.6The controller is Duet

@bearer OK found it, right click filename!

@bearer Thx for the link. I havent found a way to delete from DWC

Is there anyway to delete gcode files on the sd card without removing the card from the duet?

@dkos My printer bed is 21X21 inches and quite heavy, and i have no trouble with only 2 motors 3 leads screws. If anything stops working i will try only one motor, but right now its printing better than ever. Actually i will be replacing the lead screws with ball screws, just waiting for a new and longer timing belt to arrive.