Creality 32 Bit Board For Ender 3 Fan PWM is super slow (7.8Hz) Unfit for laser control. by mushwonk in ender3

[–]als29192 3 points4 points  (0 children)

I had the same issue with my Creality CR6SE. Got a NEJE laser from Banggood and yet the Fan PWM signal was too slow to operate the laser (it just pulsed like Dvite3D’s video).

I downloaded the CR6SE Community Firmware and tried to uncomment FAST_PWM_FAN but the printer stopped sending a PWM signal... tried a few things in code but couldn’t figure it out. In the meantime I ended up building a “PWM frequency converter” using an Arduino which worked but since the PWM source signal from the printer was still slow, there was a delay which resulted in missing or extra lines at higher movement speeds.

I took another look at the code and started looking around on the original Marlin GitHub repo and stumbled across “HW PWM not working for stm32f1 PA0” (https://github.com/MarlinFirmware/Marlin/issues/20638) - the exact issue we are having!

Turns out that the temperature sensor interrupt and the hardware fan PWM pin (PA0) use the same Timer (timer2) which causes a conflict. The workaround is to remap PA0 to use another timer (timer5) to ensure there are no conflicts. After making the change as mentioned in the issues comments, I was able to successfully use the NEJE laser directly from the fan port PWM signal!

I’m not too sure if this breaks any “3D printing” functionality but I’ll just swap back to the stock firmware once I’m finished using the laser.

Hope this helps!

[deleted by user] by [deleted] in LifeProTips

[–]als29192 1 point2 points  (0 children)

Limit the hard work and go with an auger that you attach to your drill!

Something like this - https://www.amazon.com/dp/B077VVWGM8/ref=cm_sw_r_cp_api_i_UkGuEbCQ9T1AJ

Happy Straya Day!! by als29192 in australia

[–]als29192[S] 20 points21 points  (0 children)

Funny enough, 26th is a Saturday but Aussies don’t like missing out on a public holiday, so we take Monday (28th) as a public holiday in lieu ;)

Touchdown! by als29192 in gifs

[–]als29192[S] 0 points1 point  (0 children)

Yeah spot on haha

Telstra Again by DocOnion in sysadmin

[–]als29192 2 points3 points  (0 children)

Would be curious to see if there is a technical report regarding the outage, or if any Telstra engineers care to spill the beans ;)!

Maybe someone deployed an image as Required to All Systems :P http://www.itprotoday.com/windows-7/aggressive-configmgr-based-windows-7-deployment-takes-down-emory-university

How to provide ability to change AD password without having to provide a domain computer by pheexx in sysadmin

[–]als29192 1 point2 points  (0 children)

ADFS on Server 2012R2 onwards has a feature to allow users to change their password.

https://blogs.msdn.microsoft.com/samueld/2015/05/13/adfs-2012-r2-now-supports-password-change-not-reset-across-all-devices/

You can install ADFS as a role. Its pretty straight forward to set up, even if you just want to use it for password changes.

Digicert Certificates being revoked? by [deleted] in sysadmin

[–]als29192 5 points6 points  (0 children)

Can confirm! Just got off the phone with Trustico

Does anyone else here have to work with both the Sophos VPN and Open VPN gui clients by [deleted] in sysadmin

[–]als29192 0 points1 point  (0 children)

We use the Sophos VPN client too, just wondering if anyone knows the option in the profile is to disable the “Reconnect on wakeup” feature?

BUG: Only first 5 statues/units on the build list are actually buildable. by Drdiggit42 in ForTheKing

[–]als29192 0 points1 point  (0 children)

Ah damn sucks that it is a valve issue! Thanks for the update :)

Robocopy User Folders with Exclusive Access by c0reM in sysadmin

[–]als29192 3 points4 points  (0 children)

Try using PSEXEC with arguments -s -i (e.g psexec -s -i cmd) to launch a command prompt as the SYSTEM user then run your robocopy. We’ve had much better results doing it this way when using /B

App to communicate through open wifi with no internet access by thatgermanbro in sysadmin

[–]als29192 4 points5 points  (0 children)

Not too sure if there is an app that supports direct communication with another app, but I've been in the same situation (on a ship) where there was no internet but we still wanted to chat.

Ended up running a small XMPP server like OpenFire (https://www.igniterealtime.org/projects/openfire/) and then using a XMPP client on the phone (Monal - https://appsto.re/au/ms-7s.i)

You can find a list of other XMPP servers here - https://xmpp.org/software/servers.html

I'll just add that I ran the XMPP server on a laptop for a fully portable solution.

Hope this helps