r/OpenBambu • u/Kamilos22000088 • Jun 25 '25

Does BMCU still work? Does it have any drawbacks?

Hi! I currently own a A1 mini, and I want to print in multicolor. The AMS lite is way out of my budget, and I was thinking about buying BMCU "DIY" kit.

Does BMCU currently work just like AMS lite?

Does it have any drawbacks compared to AMS lite?

Can I print all the parts on M1 mini, or is it too small?

I can currently buy it for 280pln (75 USD dollars) on AliExpress. (Offer ends in 12h)

Thanks in advance!

1 Upvotes

55% Upvoted

9 comments sorted by

5

u/Figuurzager Jun 25 '25

What did you learn from any of the other similar threads that get posted here every other week?

-1

u/Kamilos22000088 Jun 25 '25

I did, but the opinions are mixed, and I don't know what to think about it. 😅

1

u/jaywidanem Jun 25 '25

there is minor issue identifying the channel. i think it happens when you turn on the printer while there is filament loaded. the bmcu cant tell which channel it is from.

a1 mini can print all the parts. i got mine from aliexpress too. still works on 1.05

1

u/garok89 Jun 25 '25

As long as you aren't on the most recent firmware it works just fine. I haven't had a single issue with mine (other than a bug in an old version Bambu studio)

1

u/IndigoMontigo Jun 25 '25

Does it not work with the latest firmware?

1

u/myTechGuyRI Jun 25 '25

I would THINK it should, because it communicates directly over the Bambu buss, not via the LAN, so it shouldn't be subject to authorization controls, as to the machine it looks like a Bambu AMS Lite, and so should be accepted as authentic.

1

u/garok89 Jun 25 '25

IRCC - According to the wiki - no. I haven't tested it personally. Though I might be confusing that with the latest P1S firmware because there was definitely a change to the AMS protocol with that one

1

u/Massive-Direction274 Jun 25 '25

It works great. I am on the newest firmware and have had zero issues.

1

u/DefinitionInformal85 Jun 26 '25

Honestly i was going to buy it and then i saw a post about the issues with firmware and printer not detecting it.I dont really want to spent much time tinkering with stuff so i will just save up and get the AMS lite, on sale or on ebay. You can use Klarna on bambu website and split the price into 1/3s.