Purchased some of these beauties, https://www.amazon.ca/Wyze-Wireless-Camera-Android-Version/dp/B076H3SRXG/ref=sr_1_3?ie=UTF8&qid=1541290010&sr=8-3&keywords=wyze, for the house to replace my way more expensive - but dead - IP cameras. With the addition of a small/cheap 4-16GB SD card and an awesome hack from https://github.com/EliasKotlyar/Xiaomi-Dafang-Hacks, I can link them to my existing home PVR. I've used Sighthound for years https://www.sighthound.com/, but you don't need to have any software to use these cameras with with Duet Wifi. All you need to do is extract the folder 'firmware_mod' from the Dafang zip file to the root of your sd card. Edit the file \config\usb_eth_driver.conf.dist and add your SSID and password (only 2.4 Ghz). Rename \config\usb_eth_driver.conf.dist\ to \config\usb_eth_driver.conf. That sets up your Wi-Fi connectivity. Once you figure out the cameras IP just enter it into your browser http://www.xxx.yyy.zzz, you will be prompted for the user name 'root' and password 'ismart12' - all lowercase. You can, and should, change the password straight away. Monkey around with the settings but make sure under the camera controls you have RTSP h264 server running. Probably don't need to change much. Then go to your Duet W-Fi under Settings / User Interface enter this for the camera address https://www.xxx.yyy.zzz/cgi-bin/currentpic.cgi - replacing www.xxx.yyy.zzz with the camera IP. Set the web cam update interval to your liking, mine is set at 1 sec. Save your settings and when printing the job status window will update with an image from your camera based on the update interval you entered.
The cameras will also work, generally, in low to no light, I forgot where i got the info but think it just needs a file in the config folder called 'autonight.conf.sw' and all it contains is '-S'

Interesting, turning it off seems to have done the trick. However turning it back on doesn't make it jump any more. Will see how it goes and report back

@fcwilt BLTouch was working great, just bugs me that I can't get the Piezo to work for better accuracy. THat is back on so will re-calibrate and leave it now

Thanks again everyone, my DuetWifi and HEVO are back in sync. Have put back my BLTouch to replace the Orion as it was ticking me off, once i get some better prints I mat put it back.

BLTouch is now dialed in and I just need to tweak the prints to stop extraneous links between parts - another self inflected issue I'm sure.

Not replacing the cracked carriage until it fails completely - it's a royal PITA replacing it and setting up again IMHO

Have made note to self that whenever I monkey around with the hotend and/or carriage I run an autotune, fan on fill, before i do anything else ;o)

@fcwilt Nah, likely its me - I've been known to be defective before ;o). I have 2 Orions and 2 of the previous PCB's and have never been able to get the consistency i have with the BLTouch

@danal Noticed that myself awhile back but didn't see your post until now. My fix, workaround really is to open a browser and go to the cameras IP. It will prompt for username & password and then show you what it sees. No surprise there, however - go back to the web page your Duet is on and you will be happy to see the camera view will now miraculously work!

@fcwilt Nah, likely its me - I've been known to be defective before ;o). I have 2 Orions and 2 of the previous PCB's and have never been able to get the consistency i have with the BLTouch

@fcwilt BLTouch was working great, just bugs me that I can't get the Piezo to work for better accuracy. THat is back on so will re-calibrate and leave it now

@Foden Ok, so I've decided to throw in the towel, again. The probing is still inconsistent even when probing each position 4 times. So enough is enough, back to my trusty BLTouch

Thanks for all the help and supoprt!!!

@Danal Yikes - this was from a year ago - lots of people have mentioned this. It's a "Feature" of the web control. Belive it was chrishamm that gave me the the solution I had to toggle Off the "always show info area" - on this very page

@fcwilt LMAO - oh man I'm going to remember that one - so so true

@fcwilt Don;t get me wrong - I love the BLTouch, it's on my MKS IIP and my HEVO. Just feels like we should be able to get better accuracy with the Piezo. I suspect I will end up back with the BLTouch, neither are v3 though

@gtj0 Thanks - will give that a shot too. Both Orions produce different maps to each other (should have kept a copy of the other, PITA to swap out and do again at the mo. The map from the BLTouch looks way more likely to be accurate and prints pretty well too

OK folks, almost cooking-on-gas again!!!! I have 2 Orion setups, different board versions, and have been able to get them both the run through a full bed mesh leveling process. Some tweaks to the probing speed, thanks fcwilt with pointers from grizewald and especially gjt0

M558 P8 I1 R0.4 F1200 H5 T6000 ; Precision Piezo Orion mode 8
G31 X0 Y0 Z-0.1 P1000 ; Set Z probe trigger value, offset and trigger height
M557 X20:260 Y40:255 S30 ; Define mesh grid

Getting the sweet spot on the Orion is a pain and it's not quite there, but OK for now. The mesh map from either Orion is very odd, compared to the BLTouch. Watching the probe i didnt see it skip any points so not sure what is going on here. Too late again to night but will poke around during the remainder of the week.

@fcwilt Perfect - looks like living off cold/flu meds really does rot your brain. So I'm currently setting my probe speed to 600 for the Piezo and 900 for the BLTouch :o(

Thanks fcwilt for the swift reply

@Foden Hmmm, OK had another go at this and speeded up he Z axis move. BUT, whilst i can get it to zip up and down darn fast when homing it goes much slower

Originally the Z max speed was 200 and I up'd that to 2000. In my Home Z / home all the Z movement is 5000 (i know it wont do that speed as the max is 2000)

When I move Z up or down 50mm it takes less than 2 seconds, but when I home from that distance it takes over 8 seconds. Looking at the parameters for G30 there doesn't appear to be a speed option. Sooo, I'm missing what ever limits the homing speed as that soes not match the subsonic speed at which i can now move the Z axis. I can adjust the Orion so it doesnt trigger simply by bed movement but am still getting inconsistent probing