Best posts made by AdiGital

Success!

I'm happy to report I managed to fix the board. All the ICs (except U12 and U3) were replaced not only once but twice!

After ensuring the drivers don't feed high voltage back to the controller I replaced it along with the ESP. After I flashed them both I was getting excited seeing working web control. I tried the drivers but no response. So I assumed they are fried too. Replaced all of them (the board thermal characteristics is soooo freaking good - unfortunately in this case ). That didn't help, still no working motors. I was too lazy to turn the oscilloscope and check the signals. I assumed the only chip I didn't replace (U10) was faulty and ordered a new one. Today I replaced it and still no progress. Only then I checked and found SPI data wasn't getting due to poor soldering.

So I removed the controller and re-soldered it with more care. And voila! All good. So just to complete and to avoid any hidden soldering problems I replaced the drivers to the old ones, which as suspected work just as fine.

Thank you @T3P3Tony, @Roland and @dc42.

Here is the board working and looking like new again

Hello,
Here is a preview of my fully enclosed printer. I’m in the process of creating properly cut video but it appears more difficult than building the printer. I decided to publish these few shots before the entire construction becomes obsolete. Will update after I manage to complete the final video.

In few words, after trying lots of ideas and experimenting with various scenarios for the controller I happily ended up with the Duet3D WiFi. Thanks to it I could finish the construction. Other key elements are E3D V6 , Titan, and IR sensor.. For the bed I used 500W silicon heater, 3mm aluminium plate and PrintBite. Steppers are 0.9 deg. Print area is around 240x355x295mm and the printer itself 410x510x600mm. I managed to design and create the mini display for basic controls. I call it SUIFD (simple UI for Duet). The printer is working as expected but I still need to tune it for even more perfection – get it working nicely with Cura.

(Hopefully the images now show and the links work) - The colors of the UI are not closely represented by the video.

Updated video

https://youtu.be/HyENB_1UKfo

Just a little note - the forum link on the main page (duet3d.com) still leads to the old one.

And here is the SUIFD code and short connections description:
https://github.com/AdiGitalEU/SUIFD

@bearer - the cooling is on the back side as well. The board is pressed against aluminium bar via thermo pad.

Thank yuo @DennisHall