BTT Power Shutdown Relay V1.2 - Save your printer from idling all night. Full Tutorial.

[@KanePowley]

Excellent video, very thoroughly explained! So many people do demos like this but skip over the finer details which are often so important. Hats off for re-dubbing the video in English, many people would just add subtitles to the original. Nice enclosure setup too btw 😜

[@modularmobility2276]

Thank you for this great enclosure concept of yours. I should add a link in the video description....

[@LivinWorkin]

I've been searching for this information FOREVER!!!!! You have made my life such easier!

[@MattKleminger]

Outstanding video, detailed to the level that even a newbie can follow. Nice job, but I'd hate to see how long a similar presentation would be on a complicated subject!

[@modularmobility2276]

@@MattKleminger yes, indeed. 45min tutorial on YT is a long video, but in real life a talking to a friend in a dialogue over 45 min is quite short

[@EsotericArctos]

An alternative to this connection, if you don't like playing with mains power, you can interupt the 24V line on the output side of the PSU. This will still reduce the power used dramatically, but obviously would leave the PSU running, so would not reduce it quite as much as a full mains shutdown, but could save you messing with mains. Another thing to note is in some countries it is illegal to play with mains wiring, even in this context. Also, mains cabling should always be double insulated when exposed in this way. The power loss recovery is only half usable. If the power goes off, the Enders (and most other printers) shutdown really quickly when the heaters and everything are running and it does not have time to save progress to the SD card when power has already failed.

[@gervaziodegan]

Thank you very much, excellent video, you saved me hours of research and probably one mother board burned out.

[@mururoa7024]

Excellent tutorial! Thank you very much! (despite the epilepsy inducing flickering 😉)

[@modularmobility2276]

😀😆 You're welcome 👍

[@benperreau]

Thanks for the time you spent doing this awesome video as there's not much information out there on how to get this BTT relay board setup - Looking forward to further educational video!

[@modularmobility2276]

Your welcome. Thank you very much. Far too kind. Good luck!

[@TimGray]

Note you can use the cable that comes with the relay board if all you want is power control. BUT as typical of BTT, it's wired wrong. you have to be sure to swap the pins on the E3 board end. Once I flopped the wires on their stock cable it started working perfectly. Never trust any cable sent by BTT to be correct.

[@nightchild7984]

Sehr gut erklärt, hätt ich es nur letzte Woche gesehn. Jetzt ist alles dran und suchte nur nach ein Gehäuse ;)

[@AlexG207]

Does it work for klippper and the BTT Octopus board?

[@juliatruchsess1019]

Thank you. I don't know why BTT couldn't have put the complete wiring diagram including mains connections to the PSU in their documentation.

[@modularmobility2276]

This is something I keep wondering whenever I receive electronic stuff from Ali.

[@bulbashoff-grid2374]

Спасибо тебе, друг! Разложил все по полочком, очень подробно, очень понятно! Удачи тебе!

[@TheEricounet26200]

Thanks a lot for your video: I was struggling with the printer shutting down after 20 seconds : it was the signal cable and I had to reverse the GND and SIGNAL. The cables were the ones with the relay, and the card from the same manufacturer ... I could never have imagined that the polarity of the cable was reversed. 😇

[@modularmobility2276]

🙈 Anything that CAN happen WILL happen.

[@Stanoflittle]

Thank you very much for this tutorial . I have a BTT octopus motherboard. For sc detect I am thinking of taking SPI3 5V and GND, for power loss detect there is 3V3/GND/ PC0. Should I take 3V3 or PC0 with GND? When in doubt I stick to the basic function

[@michaellindborg1510]

Excellent video! Especially the description of sc detect and power loss detect, which are very poorly described in the BTT manual. My only question (besides wishing for a config for Klipper): wouldn’t a momentary push button make more sense than a toggle switch for reset?

[@modularmobility2276]

Thank you for the positive feedback, Michael. The toggle switch I am using is indeed just a momentary switch. Though you are right, this style of switch comes commonly as latching switch. Stay healthy!

[@JHMProject]

​@modularmobility2276 is the switch always on or always off? I think I bought the wrong one. this was great btw

[@RowdyRocket]

Wonderful! Thank you!

[@jeje4051]

Excellent video, awg section for dupont cable ? 24 26 or 28 ? thanks

[@modularmobility2276]

I work with AWG24 by default, but I am sure you can go up to AWG28 since the wires just transfer information, not power.

[@jeje4051]

@@modularmobility2276 thank you !

[@Robag21]

It was really helpfull!! Thanks a lot

[@juliatruchsess1019]

Does the system auto-reset when you power-cycle the mains, or is the Reset button absolutely required?

[@modularmobility2276]

Your first guess is the correct one.

[@gsuresh2u]

Hi, anyone used this with klipper?

[@g-kyotomam7109]

Hi, how to change it from 90c to 50c?

[@AlexG207]

Can it function without the second power switch on the front?

[@modularmobility2276]

Yes

[@hughdidit]

Ithink you missed how the mins power switch is wired.

[@stefi300972]

why is pw detect used?

[@Giovanni2862]

With Klipper?

[@anidimi8797]

La video est excellente. J'ai donc commandé cette carte. Est-ce que vous vous souvenez où vous avez acheté le bouton reset ? Merci d'avance. Ghislain

[@modularmobility2276]

Salut. C'était chez Ebay, voyez ici: www.ebay.de/itm/261320001940?mkcid=16&mkevt=1&mkrid=707-127634-2357-0&ssspo=UnKnEVQhTUO&sssrc=2349624&ssuid=qcIXd5nSStK&var=&widget_ver=artemis&media=COPY

[@anidimi8797]

Hello, thank you for the response.👍

[@mikem8145]

Thank you for this great tutorial! I do have a question though. If there is a power failure, how can the PW-DET feature work? I mean if there’s no power… how will the mainboard be able to save printing data onto the SD card?

[@modularmobility2276]

I am only guessing when I say there is enough energy stored in the capacitors of PSU to just enable writing into the eeprom. This will take only a few millis. When you buy the UPS from BTT they have like 8 or 9 capacitors and these store enough energy to lift the z-axis by 5-10mm! So my assumption is that a single cap that smoothes the DC voltage will keep up the power long enough for saving the print progress.

[@mikem8145]

@@modularmobility2276 I bought the BTT 24V mini UPS but haven't installed it yet. Do you have a tutorial for the installation and Marlin configuration of the BTT UPS? Thank!

[@modularmobility2276]

@@mikem8145 Hello Mike, I am sorry, no, I don't have one. Don't put any junk on the printer that can fail ;-) . I didn't see a big advantage buying it. If my print is being interrupted by a power outage the small blob the UPS will avoid on your part is only a small cosmetic damage compared to the damage ghe power outage does on your part by the offset in z you have to expect when the printer continues printing after an interruption with cooldown.

[@thediscoman2001]

its not shutting things down really as it leaves the psu on its only shutting the board of witch is pretty much a waste of time as uv goto turn the psu power off manually

[@modularmobility2276]

This is not correct. The relay cuts the mains voltage to the PSU to 100%. Just relay itself is still fed with by mains voltage with a current of some 2-3mA.

[@rackbites]

Nope ... see @2:51 ... the PSU is switched off ... see the switch there on the AC side ... only thing that has power is relay.

[@MrGrayFJ]

Try to wire it on Btt Manta M8P! This relay is useless.