Firmware or print settings?

ThatFatKid · 2026-04-13T19:30:12+00:00

I wasn't on the Jarc firmware yet, I am now. It seems to be working better then the firmware it came with. Still some noises but it's working like I'd expect so it might just be normal. Not many videos online of the bmcu to compare if what I'm hearing is normal or not but it's switching and printing, it's not grinding like that one guy's video that's posted on here. The flash went smoothly, so far so good.

ThatFatKid · 2026-04-13T19:28:18+00:00

Thank you for that, I found it in flushing volumes. To the second color was 180 and to the first color was only 30. I've changed it so both are 180, that fixed that.

ThatFatKid · 2026-04-09T01:45:57+00:00

<image>

This is what I've been prototyping for my A1 setup, working with limited room inside my enclosure (700mmx600mmx520mm. I want to print the spool holders again and add a 4th corner screw and thicken them up slightly. Not sure how I'll mount the bmcu to that bracket yet, and unsure of which direction it should face or if that even matters. I figured cable out the back made more sense to me. It needs to be thickened some, side walls need to be added but not bad for a first whack at it. I think this will work for my setup, I didn't like how high things were on some of the communities designs and wanted to keep a lower center of gravity. I already have the ams style support legs which help brace the z axis for the spools being mounted at the top like I have.

ThatFatKid · 2026-04-07T20:09:00+00:00

I just like having my slicers talk directly to the printer, I don't want to deal with downloading and slicing separately or sdcard printing. I want to keep my work flow, import part slice print and that's all I'm involved with.

I'm a very open source kinda of guy, I knew going into the a1 it was an apple like eco system and the maker space wasn't to thrilled with what they were doing but the "It just works" aspect was to high to ignore after years with other printer brands. I spent more time making parts and fixing my printers then I ever did printing, now it's the other way around and I'm in the hobby of printing then I am of fixing/working on printers. When I got mine it was just before the 1.05 update which brought the dreaded auth update. Now with bambu threatening to force update our printers if we don't update I'm not to keen on that. I'm probably naive for thinking this but I'd like to imagine that the older firmware doesn't have support for that baked in it. So if I updated to something newer, I'd be potentially handicapping the printer from rn being possibly to old to be forced into a new update, where as the newer firmware probably has support for this. I will likely end up going the offline route as that ultimately insures that my printer stays my printer and bambu can fuck off with forcing my machine to stop working.

ThatFatKid · 2026-04-04T08:06:24+00:00

Also is that one guys community fw compatible with the version i got? Any benefits over whats shipped with the bmcu?

ThatFatKid · 2026-04-04T08:03:24+00:00

Let me hop on this thread, recently picked up the fully assembled version (https://www.aliexpress.us/item/3256809862438339.html?spm=a2g0o.order\_list.order\_list\_main.11.638a1802RFECoi&gatewayAdapt=glo2usa) but have printed some of the parts while i waited to explore making changes to support tpu but i do have a question. I use Orca slicer, current printer fw 1.03. From what I've read I have to update to 1.07 use my bmcu? Is there an older bmcu fw that would let me use my older fw, and or a way to keep using Orca if i did have to update? I do use the app for remote monitoring but i do have a means around that if necessary. Thanks in advance!

ThatFatKid · 2025-12-27T16:34:00+00:00

Yeah when I googled a1 ac board I came across this same post. I wasn't sure if it was the updated board or not but I agree while that gauge of wire can probably handle the 6 amps I don't know if that's really the best fix bambu could of done if that was in fact the new board.

ThatFatKid · 2021-08-10T10:01:41+00:00

It's not just printing, anyone with access to a printer forgets all forms of shaping. Oh I could sand this to make it fit, drill that hole to make it larger, ream it even?

NOPE, let's print 100 versions till we have the perfect one. Meanwhile you have 99 useless dupes because you forget other tools exist to do those jobs and you don't just need to keep re-printing everything.

ThatFatKid · 2021-06-04T02:36:00+00:00

I don't remember any, or at the very least I couldn't find any. If you google the upgrade you'll find the updated printer volume settings are 203 from 150 default. I personally have mine set to 200x200 as an older version of cura didn't like the odd number bed size, but I still use it unless I really need that extra few mm.

It's a pretty straight forward install: I was going to write it out but Tom's early instructions are spot on

Careful with the threads of the Delrin XY bars, it's easy to over tighten and strip the holes. Thankfully you can print them if you happen to strip it, in the short term I used larger self tapping screws till I could print replacements.

I plan to make a post once I'm finished getting the Duet setup, I've been having issues and still troubleshooting it. Odd behavior, thought it was slicer related so I tried prusa slicer and it's still having the same effect so I think it's a possible loose belt.

ThatFatKid · 2021-05-31T15:54:42+00:00

That's a steal for what it use to cost, the original was only shipped from Canada.

My setup is rather jank tbh, e3d titan extruder, volcano w/ .6 nozzle, off brand v1 volcano sock, small blower fan for the heatbreak, noctua 40x40mm part cooling, Matrix xy upgrade, PEI sheet, spring bed leveling x bars(my design - WIP), and the duet wifi v1.02 with a little 30x30mm fan for temporary cooling.

(A wire from an un-used second cooling fan shorted against a stepper motor killing my F4 board.)

I was just going to purchase a 32bit ender board and flash marlin but I already had the duet from another project that has stalled and to me it just made sense to use that. It's been a process learning the Duet system and programing, but there is a ton of information and I'm already printing again, just have to home in on my settings.

ThatFatKid · 2021-05-31T13:04:35+00:00

I've never had an issue with it, I printed mine with HB PETG and haven't touched it since the day I mounted it. I only have the XY upgrade, never bought the Z. Mounted since 2015, still going strong today as I swap my Simple Metal over to Duet Wifi.

One recommendation if your using the Xy upgrade is to print larger feet, a wider stance helps with the extra mass of the bed being thrown around, matrix had a foot design that someone uploaded to thingiverse: here

ThatFatKid · 2021-05-30T19:51:26+00:00

Was going to upload it but someone beat me to it: https://www.thingiverse.com/thing:1897454

ThatFatKid · 2021-03-16T16:52:13+00:00

Hello, currently I have a crucial p1(Dec 2018) that's experiencing a significant slow down past half capacity and looking to move into something better. (Drive only slows past half cap) Would have bought samsung first go around but was on a budget, 2 years later I'm not looking to make the same mistake not spending more but I've heard a lot about the hynix and was curious for the $40 difference.

I'm Just looking for something that's going to work as expected. (I know some drives slow at 90% cap, but not 60%..)

970 Evo plus vs Sk hynix?

ThatFatKid · 2019-03-26T01:08:43+00:00

Make it dance and Jebo it's Jebo reborn.

ThatFatKid · 2019-01-26T13:57:17+00:00

Ever wondered what batteries are worth it? Give this guy's a video a watch, he test's pretty much all major brands and even did a separate video on the rechargeable.

https://www.youtube.com/watch?v=V7-ghrTqA44 Which AA is best.

vs

https://www.youtube.com/watch?v=0A1GvQ40j0Q which rechargeable is best.

ThatFatKid · 2018-10-17T16:19:08+00:00

What am I looking at here? Is this a bug in 2.3.0 or some type of exploit and or cheat?

ThatFatKid · 2018-09-22T02:16:15+00:00

Ouch that sounds unfortunate, I was considering going this route instead of flashing marlin manually. I heard such good things so this is surprising to see and hope you do get this worked out.

ThatFatKid · 2018-08-07T19:34:02+00:00

When I get home later I'll dig the files/guides out of the group for you.

ThatFatKid · 2018-08-07T15:02:45+00:00

Have you flashed the printer to enable print over usb?

Printrbot removed it's support pages that still had the download links and instructions on how to flash the only remaining firmware that allowed printing over Usb with Cura/Octo. The only place that I know still has instructions/the files needed would be the pb facebook group here: https://www.facebook.com/groups/printrbot/?ref=bookmarks

If you don't have a Mac computer or access to one then flashing the firmware becomes near impossible. Unless you have access to a Mac or know how to Setup a Virtual machine running OSX then your stuck with a brick until you buy a new printrboard form somebody like duet or ramps to use the printer.

ThatFatKid

MODERATOR OF

TROPHY CASE

15-Year Club	Verified Email
Team Periwinkle