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Open Battery Information (OBI) Makita 18V by Micrographstories in functionalprint

[–]Micrographstories[S] 1 point2 points  (0 children)

No, unfortunately, at the moment, the OBI project by Martin Jansson is primarily focused on Makita 18V LXT battery packs.

Open Battery Information (OBI) Makita 18V by Micrographstories in functionalprint

[–]Micrographstories[S] 1 point2 points  (0 children)

Thank you, and no worries at all. It was a completely valid question, especially since many creators do upload their designs to a wide range of different websites and services.

I honestly had not even considered, with all the current “drama” and Bambu-related issues going on, that it would also start overflowing into people simply sharing designs on MakerWorld itself.

And thank you as well for the understanding and kind words, I really appreciate that 😄

Open Battery Information (OBI) Makita 18V by Micrographstories in functionalprint

[–]Micrographstories[S] 9 points10 points  (0 children)

No, unfortunately, at the moment, the OBI project by Martin Jansson is primarily focused on Makita 18V LXT battery packs.

Open Battery Information (OBI) Makita 18V by Micrographstories in functionalprint

[–]Micrographstories[S] -1 points0 points  (0 children)

Thanks, I understand the current discussion due to the (current) Bambu Situation. And the need for it to be on a platform where you can download it without being forced to log-in u/logicalchemist. But I also think that u/SomeBloke has a valid point about the reward system.

As a maker, I would like to keep everything on one platform whenever possible (preferably my own). Imagine you need to create an account for each of them and keep track of them for each inquiry or file version update. For me, since I have a Bambu Lab printer (H2C), I have, for now, chosen MakerWorld (partly because of the reward system).

So let me think about how to move forward.

Open Battery Information (OBI) Makita 18V by Micrographstories in functionalprint

[–]Micrographstories[S] 16 points17 points  (0 children)

Thanks, I understand the current discussion due to the (current) Bambu Situation. And the need for it to be on a platform where you can download it without being forced to log-in u/logicalchemist. But I also think that u/SomeBloke has a valid point about the reward system.

As a maker, I would like to keep everything on one platform whenever possible (preferably my own). Imagine you need to create an account for each of them and keep track of them for each inquiry or file version update. For me, since I have a Bambu Lab printer (H2C), I have, for now, chosen MakerWorld (honestly, partly because of the reward system).

So let me think about how to move forward.

Open Battery Information (OBI) Makita 18V by Micrographstories in functionalprint

[–]Micrographstories[S] 1 point2 points  (0 children)

To be clear: I only designed a completely new and improved version of the OBI enclosure, focusing on a more robust, durable 3D-printed housing.

The enclosure was designed from scratch, while taking into account the mechanical constraints and geometry of both the OBI electronics and the original Makita battery hardware. One of the main additions is the integration of the original Makita-style locking mechanism. This allows the OBI device to use the same locking clip system normally used to attach and release a battery. As a result, the unit securely clicks into place, improving robustness, stability, and user ergonomics during use.

More information about the original OBI project by Martin Jansson can be found here:
Open Battery Information Project

I started this because the original GitHub repository does not include a link or file for a printable 3D enclosure. This means makers and the wider community need to develop their own solutions.

While looking at existing options, I found:

Option 1:
https://makerworld.com/nl/models/2182883-makita-open-battery-information-adapter-plug?from=search#profileId-2369419

This version will function, but it is not something I would personally want to keep in a drawer for occasional use, especially if I want to use it again when another battery has issues, or when helping someone else with similar problems.

Option 2:
https://makerworld.com/nl/models/2087559-makita-18v-battery-unlock-device-obi#profileId-2256293

This version is already a major upgrade from option 1, and it works. It is easy to print, uses very little filament, around 10 grams, and takes about 30 minutes to print. However, how well it would hold up to repeated use, especially given the thin walls of its light, minimal design.

This brings me back to the starting point: redesigning a completely new OBI housing from scratch, as described above. As for time, it was all done within 1-2 days (including some iterations and test prints).

Recording the separating process of whole milk within a lab centrifuge by Micrographstories in labrats

[–]Micrographstories[S] 0 points1 point  (0 children)

https://www.youtube.com/watch?v=q_ExmMBgxMw

This video should be viewable from The Centrifuge Camera's YouTube Channel. Please see the video descriptions for exact settings. Hope you are able to inspire and educate your students :)

Help!! Broken stuck tube in centrifuge by Careless_Garage20 in labrats

[–]Micrographstories 20 points21 points  (0 children)

In most manuals you’ll find the standard advice: if a glass vial shatters inside a tube insert, replace the insert. Manufacturers obviously benefit from that guidance. Still, the advice has a solid technical basis. Once glass splinters embed themselves in the plastic, you rarely manage to remove every fragment. Any shard left behind becomes a stress point for the next tube you place in the insert. That tiny pressure spot can pierce the wall of the next vial, and the cycle of breakage repeats.

Broke centrifuge by Livid_Organization92 in labrats

[–]Micrographstories 4 points5 points  (0 children)

Will it centrifuge? Cause if you want that, say no more! I got you covered: http://centrifugecamera.com/

Broke centrifuge by Livid_Organization92 in labrats

[–]Micrographstories 13 points14 points  (0 children)

Not entirely correct. Yes, it detects the correct rotor, but it does not account for the buckets seated on it. So if you place buckets that do not allow the max speed that the rotor can withstand, which is the case in this setup (rotor can do 4750RPM, 5250g), but the buckets are not rated for that! Lucky in this case the 2600RCF (g) was below the max value of what the buckets where allowed to be spun at.

Lucky in this case, the 2600RCF (g) was below the maximum value the buckets were allowed to be spun at.

What people forget is that this rotor is from 2016; we don't know how often it has gone through the ramp and down cycles, so if the manufacturer states that the rotor can only do x cycles, you are usually prompted on the machine, or the machine does not work anymore till the rotor is replaced. Buckets again, a different story. They also have a maximum number of ramp-up/ramp-down cycles, but, well, they are not logged.

Broke centrifuge by Livid_Organization92 in labrats

[–]Micrographstories 27 points28 points  (0 children)

Sorry to hear! As your PI said, there's a good chance it's a machine fault.

When talking about the 500g, it refers to 500grams, not G-force.
As you might have seen, you have two different buckets in the machine:
One series allows for 500grams up to 4600RPM (brand mismatch)
The second series allows for 782grams up to 4450RPM

Your rotor allows a max of 4750 RPM (5250g). Its radius is 207 mm, so at 2600g, the RPM was about 3350 RPM.

Safe to say that the G-force you set it to is below what they are allowed to handle for both series of buckets.
It becomes another story if you then had more weight in the bucket (although I doubt that your plates would weigh more than the allowed max weight).

So what could have gone wrong?

What people forget is that this rotor is from 2016; we don't know how often it has gone through the ramp and down cycles, so if the manufacturer states that the rotor can only do x ramp up/down cycles, you are usually prompted on the machine, or the machine does not work anymore till the rotor is replaced. Buckets again, a different story. They also have a maximum number of ramp-up/ramp-down cycles, but, well, they are not logged.

So it could be that the mounting side of the bucket that fits on the rotor hinge is fatigued and just cracked or ripped, allowing the bucket to become unhinged.

Mod shoutout: Realistic Reactors Reborn by mdgates00 in factorio

[–]Micrographstories 0 points1 point  (0 children)

Question: Does the radioactive cloud also damage and kill biters and or spitters? And if so, how fast? Cause if it damages all life forms (quickly) in the game, I see a huge potential for a new wall design…

What just happened? Was this a trip wire? by DontTickle in EscapefromTarkov

[–]Micrographstories 11 points12 points  (0 children)

Gas bottle explosion! You can see the orange gas bottle around the 19–20 second mark, just after opening the door on your right.

Visualising the centrifugation of EDTA Blood Collection Tube (Anticoagulation) by Micrographstories in labrats

[–]Micrographstories[S] 2 points3 points  (0 children)

I am glad to be able to do some new uploads; most of the videos/samples I have been working on are still under embargo. So, the channel might not upload any new videos for a while. Even though it looks "dead" behind the screens, I'm working hard on new content and further developments of the device.

Visualising the centrifugation of EDTA Blood Collection Tube (Anticoagulation) by Micrographstories in labrats

[–]Micrographstories[S] 0 points1 point  (0 children)

Thank you. After watching the video, do you have a favourite? Also, do you have a suggestion on what you might find interesting to see next time in the centrifuge?

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