The Most Absurd Breville Bambino Teardown
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- Опубліковано 13 чер 2024
- A deep dive into the Breville Bambino espresso machine, showing parts, construction, and assembly. This is an inexpensive (cheap?) espresso machine (considered to be the minimum viable machine by many) which may serve as an interesting project platform. This video might be helpful for that or as a repair reference.
Schematic and datasheets: github.com/techdregs/Breville...
Flow Meter: ODE AB32-S21PO12C-11R
Pump: Ulka EP5FM
Solenoid: JLT P3T04125LA
Heater: Ferro Techniek FTH II 1500W
Triac: WeEn BTA425Y-800BT
MCU: STM32F070CBT6
=== Timestamps ===
00:00 Introduction
01:42 Cheap Accessories
02:45 Exterior Parts
04:08 Opening the body
06:42 Water Route/Flow Meter
07:52 Pump and OPV
08:45 Solenoid and Drain Line
10:35 Heater Demo
11:30 Thermal Imaging
13:30 PCB Removal
18:41 PCB/Electronics Overview
21:20 Pump Mount and Triac
22:21 Heater Assembly Removal
27:18 Heater Core
32:17 Finding a Lost Screw
32:38 Top Internal View
33:15 Group head Feed Line
34:12 Solenoid Assembly
35:35 Steam OPV Internals
38:10 Solenoid Dissection
42:36 Front Control Assembly/Buttons/PCB
46:50 Reassembly of Top End
51:30 Shower Screen and Group Head
53:15 Overall Thoughts/Comments/Conclusions - Наука та технологія
Super-detailed teardown, thanks for all the info!
Thank you for the Teardown video. This helped me to understand the basic functioning of the machine before I opened it up to fix the water pump problem.
Water was not pumping up in the machine.
Finally, I sorted it out by pushing water up with a syringe.
Excellent video with thorough breakdown and explanation. Thanks for the amazing work.
This is awesome. I've been thinking of writing some custom firmware a-la Gaggiuino with more of a modular focus instead of a cost-reduction focus with a bit of a beefier processor. This seems like an interesting platform to try out!
A Bambuino would be sick! Esp. with the lower cost of entry, energy efficiency, and modernization compared to the Gaggia.
Please do it
Might be more difficult as it doesnt use a boiler?
This deserves way more views
This was well done. Very educational and entertaining. Thanks for sharing!
Very interesting video! Thank you for the effort and sharing
Excellent video - very helpful. Thank you!
Very helpful video as I needed to take off that main filter part and didn't know how much force would be needed
Wonderful video. This is a honest and complete review totally unbiased, only truth. Thank you very much for your patience and time. Thank you for sharing. Hope someday you do the same with Breville barista BES870.
this is awesome, thank you for doing this
Amazing video 👏👏👏
Thanks for the video. After my warranty period I think I'd like to add a momentary three position toggle switch for on/off instead of pressing a combination of buttons to turn it off.
Hi! This was an incredible video, thank you so much for diving so deep into the Bambino, it's an incredible machine at such a good price :D
One thing i've always been curious though, is there any way we can mod this machine to achieve variable PID temp control?
I'm not aware of one. There's no display also, so there's no way to know what temp the MCU thinks the system as at, even if you could manipulate it to think it's at a different temperature.
suppose I wasn't worried about damage and money. In that case, I'd make my own custom board with temperature adjustment for the Bambino :O
i have the plus, I absolutely love it but my main annoying issue is that although I assume the heater itself is plenty warm, my shots come out at around 70-60c?!!! I have to heat up the wand, pull 2 empty shots through and then the output is actually 92c~ and my espresso isn't super bad or sour anymore. but for 500CAD vs 1650CAD (silvia pro x) i think it's more than fine to just pull 2 shots beforehand, the only flaw is just the water, emptying it and refilling it so often because of the water you have to waste. which is i guess water so it's not really a waste!
and wow you traced the PCB!?? that sounds exhausting and hard! so cool! I am excited to see what you do with it! I have the plus but the issue i have with mine is only really the heating. a simple thermistor to the group head or near there would absolutely solve this issue in theory. or better firmware
I was thinking of replacing the plastic inner group head with a stainless steel one which I saw in a another video for another Breville model. However, if you think it would require a warm up shot to heat the metal, or overheating if you pull multiple shots in a row, then maybe I will just let it be. Thanks for the teardown and insights.
Great Video! You should do a Gaggia Classic Pro for comparison. It’s commonly pitted against the Bambino as an entry level machine.
Maybe someday. Since I buy these myself, I would need to find a really good deal on a used one for it to make any sense.
Why though the gaggia classic internals have barely changed in 30 years..... its a thermostat controlled boiler with a 3 way solenoid. It looks like the inside of almost every other single boiler machine
Thank you for this clear video.
Is it possible to increase the outflow temperature of the coffee.
This is now only about 65 degrees Celsius.
I don't think the temperature is adjustable on the base Bambino. You might try running some water shots through the system (including the portafilter) prior to pulling your shot. That should let everything in the hot water path warm up a bit, and give you higher temps at the puck.
Great video, and just what i needed! I was really curious about the hole that goes into the drip tray, but i didn't want to disassemble my Bambino! You satisfied my curiosity but also generated a new idea: could a 3 way solenoid valve be fitted? I know the Bambino plus has one and i secretly hoped this little hole could serve this purpose...
I'm not exactly sure what you mean... the solenoid is a 3-way. I believe it would be categorized as a 3-way normally closed valve.
@@TechDregs Thank you for your reply! I mean the 3 way solenoid valve that releases the excess water from the puck when stopping the shot.
Yeah, so there's quite a bit of nonsense on the internet about 3-way solenoid valves and watery pucks. They don't have anything to do with each other, necessarily. A 3-way solenoid just switches input water between two outputs, thus, three "ways": input (1), output-A (2), output-B (3). What actually matters is how the 3-way valve is piped and thus how the water gets routed. The real reason the Bambino doesn't drain water from the puck after a shot is because Breville isn't using another valve to control the steam wand. If you wanted a pressure release for the grouphead (to drain/backflush), you'd need another valve to control flow to the wand also. Machines with manual valves on the steam wand can utilize the 3-way valve in a different way, since the 3-way isn't being used to control flow to the steam wand at all.
Sorry, to sum this up: there's really no way to make a drain work on the Bambino by adding another solenoid 3-way, because you'd also have to add switching components for it onto the PCB and reprogram the microcontroller to use it. The other way would be to manually add a valve to the steam wand, and then repipe everything to route the water in different ways. Neither of these approaches would be nearly as easy as just getting a different machine.
@@TechDregs Ah, now i understand better. Thank you so much for the clarification, really! So as a reference, it would be great to see the internals of Bambino Plus, which utilizes this system of releasing the pressure from the puck. I suppose that the whole routing of water will be entirely different.
Disappointed to see the heated water is going through the plastic bits, been using Bambino plus for 4 years now and never thought they would hide plastic bits behind the metal specially the group head 😟 . I guess time to look for a better machine now. Many thanks for the video.
Wondering if the higher end models like barista pro or touch have fewer plastic bits in contact with the hot water
Hi, thanks for the in depth video. I own a bambino plus BES500 I’m planning to install a small LED strip (small section) as a down light. I’m no expert about electronic circuit boards. Would you happen to know if that is possible to pull power from the board? Many thanks!
There should be pins on either of the connectors T_CON or P_CON for low voltage power and ground. Try the first and last pins on those connectors.
Hello! I read a comment about installing a pressure gauge immediately after the thermojet, but as I'm skimming the video I don't understand which piece is the thermojet and where this would be. Can you please advise?
Nevermind I figured it out now just to find some extra teflon tubing
Hi, my machine appears to have a lime scale blockage, I have contacted sage and they have recommended to keep trying to run the descale process but still no water is coming through at all. Would you have any recommendations, TIA
So this has 9 bar just like gaggia classic pro with opv mod but it comes with 9 bar opv for 9 bar from factory ? What one do you recommend gaggia or sage bambino ?
The Gaggia is a heavier duty machine, but the Bambino would be faster and cheaper. The Gaggia can be modded to have PID and all kinds of features, but in it's standard form, it doesn't have PID and is a very bare bones setup.
When i press the shot buttons, water/steam starts coming out of the steam wand instead. Do you think it's because of a faulty solenoid valve or something stuck in there preventing it to actuate? I can't find the JLT solenoid anywhere on the internet to replace it. You got any suggestions? Should i try descaling the valve? Last descale was a 3 months ago.
Could be a bad seal in the solenoid. It's not difficult to take apart and clean. There are only a few parts to it. I'd just be careful to document how it comes apart and the part orientations (the plastic manifold is not symmetric) so you reassemble it correctly.
@@TechDregs Thanks for the response, i'm gonna do that!
@@TechDregs I was able to clean it, thanks!
I have the bambino plus and i quite like the machine in theory but my actual machine seems to be producing water nowhere near 90degC as it leaves the group head. I think last time i measured it was about low 70s. And this was with preheating the portafilter and running a few empty shots before the actual pulling of the real coffee shot. Any idea what i might need to do to sort it out? Thanks
Unfortunately, it seems to be a common issue with the Bambinos. I don't know that there's much you can do, other than hacking the machine to think it's at the wrong temperature (by fiddling with the thermistor).... but that could make things a bit dangerous.
Same here, but I will be modding mine with a dimmer (also actually adding a manometer to get the pressure dialled in) and hopefully the lower flow rate will increase the output temp just by having a slower passage through the heater channels.
I opened up a Dedica, and this is way better built.
At minute 35:00 the back hose is disconnected, that hose is connected to a pvc elbow, that elbow has a leak in my machine :/ and when doing the pressure fills with water everything, do you know how I could look for it to change it?
Hmm... my first check would be to see that the orings inside that connection are ok. If the elbow itself is cracked, then you probably need to talk to Breville about replacement parts.
Thanks, yeah, I will check the hose first, thanks, great video by the way
Huh. Looks like there's no way to purchase a replacement Minimelt fuse on their website?...
Nah, looks like they are only found at European electronics distributors.
Does anybody have the part number for the over pressure valve (opv) that connects to the pump ?
I'd just contact Breville. I don't see anything online that looks like it (doesn't appear to be the same as the ones available at replacement part shops).
Shouldn't be too expensive. Those Ulka vibe pumps only cost like $20-25.
In my machine after 3 years the heater core stopped working randomly.
I opened it up and it literally does not heat up at all, its cool to the touch.
Any ideas of repair parts or how can i troubleshoot?
I'd probably check the thermal cutout to make sure it didn't melt, then the big triac and verify it's getting a signal to turn on. Or check the fuse on the board. Could also be an error on the thermistor. There are a lot of things that could prevent the heater from warming. Just be careful about the high voltage when you're testing things.
@@TechDregs thanks for the response! I'll definitely check those out. The thermal cutout looks in perfect condition, I'm guessing it's one of the fuses that either stopped working or blew out.
Imma try to troubleshoot with my multimeter
Is there a way to remove the steam wand?
Look at around minute 33 in the video. You'll see the top of the wand assembly on the right hand side (where the small tube enters into that white triangular block). Just a few screws holding that in. You'll most likely want to remove the heater assembly to make it easier to get to (as I do in the video).
You think its possible to mod it with to 3 way like plus
I don't think so, since it would require changing how the MCU controls it.
I need to mod the steam wand to make a no burn mod can you show me if there a easy way to acces the steam wand pm if you want THANK YOU! :)
Look at around minute 33 in the video. You'll see the top of the wand assembly on the right hand side (where the small tube enters into that white triangular block). You'll most likely want to remove the heater assembly to make it easier to get to (as I do in the video).
Thanks you :) @@TechDregs
Do you think it’s safe ,healthy to drink espresso through a plastic group head
No more unsafe than eating eggs that were turned by a nylon spatula. Or drinking hot tea made with water from a boiler with a plastic spout.
This is a gateway machine. It will make decent espresso for cheap. The only problem is now I want a bigger faster machine. 😂😂
Literally nothing is faster.....
@@nhayes927 this does heat up fast I should have said more steam power. Other than that this a great machine when paired with a decent burr grinder.
I can attest… the steam power is lacking… but.. it pulls an EXCELLENT shot of espresso. You can pull manual shots with presoak (manual as well). The plastic situation… well.. had no idea about it… but I’m sure everything under $1500 has plastic…. One day I will have a fancy flow control, E61 group head , dual boiler espresso machine ❤… in my dreams 😂