Sorting 2 Tons of Lego (2017)
jacquesmattheij.com
jacquesmattheij.com
Thanks Jacques.
It has brought much joy to various small people (and me...)
The workflow would be: sort about 10% of the pieces in a test, use that to determine which sets are present based on the rare pieces, then pull those out of the bulk in one pass, it can do 12 sets in one go. Then you do it all over again until there is no more left.
Do a single pass to identify/scan all the pieces. Then based on that, divide those into sets such that the associated dollar values are maximized and such that the number of sets is minimized.
Then select the 11 most valuable of the sets and use the sorting machine to sort these out, all the remaining legos go in the 12 set. Repeat.
Simple ;D
The other one is with a cucumber farm: https://cloud.google.com/blog/products/gcp/how-a-japanese-cu...
Fyi: The real reason why i posted it, is that suddenly your RSS feeds on your website work again i suppose :P
So all your items on your blog are suddenly in my list again :)
That and ... it's an awesome story :p
I fixed a minor bug in my Hugo setup and posted a new article, that's probably the reason why that changed. Now I still need to go fix the images on older posts. No rest for the wicked!
My current project also has ML in it; music, MIDI, programming, what's not to like :)?
I'm very much unsure about whether or not I will be able to get it to work though, I may have bitten off more than I can chew with this one.
No worries for the images though, as i'm not using that ( but i could)
edit: it should be working correctly now. Make sure you refresh the page first.
BUT, this is probably the only thing that i want to do with Music - learning how to play the piano.
Nice one!
Something you could do would be IR LEDs and an IR camera, where the LEDs are only reflected on the shiny keys when they're pressed due to the angle.
Yes, there are many use cases that I have in mind where this is a must. In fact, if I can't crack it then it's a useless project (other than that I will learn from it).
There are all kinds of devices that could give you midi inputs (such as the 'Piano Bar', sadly discontinued), but that's the easy way out. After all, you could also simply use a MIDI enabled keyboard. But I want it to work with a real piano, as well as possibly other instruments.
The best software for this at the moment is Anthemscore.
I'm quite sure it is possible but it would still require a lot of set-up. The microphone is such a temptingly simple target that it makes sense to pursue that one first.
Meanwhile, the consultancy I've been running for the last 12 years is growing up, rapidly. We just named our first CEO (other than me), who will hopefully take it to the next level so who knows, I just might have some free time again in the near future. Here's to hoping.
https://twitter.com/jmattheij/status/1016382615417389057
Amazing accomplishment, he surveyed the building just prior to demolition with a drone and then built the whole thing without a single drawing.
Some photos of the castle: https://www.davidbakerphotography.com/location-history/resid... (see in particular one near the bottom)
About the demolition: https://www.byronhartshorn.com/2017/05/31/chateau-de-noisy-i...
It's a real pity to see such an iconic building go to waste. The demolition story tries to spin it hard as though the family had no other option, but of course they did: if they were unable to be good stewards of the property then they could have donated it to the Belgian state.
But after looting it for anything valuable it is of course much better to have a white-wash story out there about how those urban explorers violated the privacy of the owners (never mind the fact that it had been abandoned for years and that there was plenty of damage from neglect alone).
It is surprisingly hard to scale a one-man show.
Now you need sub-sorters :-) I always kept my technic stuff sorted by various parts (large gears, medium gears, small gears, motors, axles, wheels, etc)
Another interesting project would be a 'pick a part' machine that used an arm and image recognition to select parts from bins and assemble a 'kit' (all the parts needed to make a particular thing)
The main limitations is to be able to sort into only 12 bins in one pass. If you want more detail or more groups then you need more passes. Ideally it would sort into a few hundred bins at once but I have not been able to come up with a geometry that works well. The most radical idea would be a tower of 2 meters high or so with bins spaced around it like flower petals, the air jet would have to be timed super precisely to aim the part into the right bin, especially near the bottom where the velocity would be quite high.
Pick a part is easier, the software is trivial but the hardware is anything but, an 'automated warehouse' for Lego parts would be a pretty tricky thing from a mechanical point of view.
And once you're on that train of thought, the obvious end-game is a machine that re-assembles the sets, then we can declare Lego a 'solved problem'.
(A more cynical man than myself might assumed the entire project was intentionally and exclusively created to appeal to the HN audience...)
This is very much a mom-and-pop market, and there are countless people out there that augment their pensions by sorting Lego by hand and re-selling it.
Releasing this would put them out of business overnight, or, they'd have a grace period as long as someone does not put together industrial mechanics for it and then it is 'game over'.
My most hated parts to separate are a flat dot on top of a regular dot. Second runner-up is the 1x1 plate on top of a dot, which is common in the Minecraft sets. I'd pay for a machine just to separate these for me!
As a child I found that the models made by my sister and myself were in a different league to those of the other kids because of this aspect of colour. We could use every brick in the box to build a townscape but nothing in the scene would be built without attention to the colours. Some other house or building might have to be part demolished to get the right colour bricks, it came down to resource optimisation. Those other kids that didn't have the colours sorted out were beginner level, they had worked out the bricks stick together but hadn't worked out that colours matter, as they do with the Lego sets, which are never jumble sale coloured with random bricks everywhere. There always has to be this aspect of taste to the colours.
Right now I do have a manually sorted selection of bricks. They are for my niece when she is old enough to move on from Duplo. We have sorted the bricks by colour and then by size. The challenge to this has also involved washing them with the sorting being by colour and then size granularity. There are specials such as the flowers and other vegetation, doors/windows and so forth. In theory my niece will be able to get the bigger blocks first and then the specialised fiddly piece, e.g. 1x tiles, can come along later.
There have been other decisions made, for instance the mini-figures have been broken down to their component parts so that there is no knowing what they were originally. There are just lots of tops/bottoms/heads and hairdos.
We are short of roof parts. But who is to know if my niece would want to be making the town scene that was the de-facto model that my sister and myself would want to make?
I also think too many specialist brick shapes can be bad for the imagination, so I hope the staggered release of basic blocks to then move on to the smaller pieces will help with this aspect of creative possibilities for my niece. My niece is a single child so won't have resource wars with a sibling, which is a bit sad.
There are many potential customers, including those too old for LEGO (not that you can ever be too old for it), I hope my 'colour first' pointers help.
Think about it: pick the 2x4 brick in red from a pile of 2x4 bricks in various colors vs pick the 2x4 brick in red from a pile of red bricks in various shapes. The first you can do in a heartbeat, the second will take much longer, and it is also much harder to determine that a piece isn't there in the first place.
- 1 kg = 30,03€
- 5 kg = 42€
- 30 kg ( max ) = 77,76€
2 tons LEGO has eBay Kleinanzeigen value of €20k+ if one sells them in packets of 5 kg. My problem in LEGO building is simple: I don’t have enough rare parts. These can be substituted with improvised modules, but when set needs 3-5 of them it’s not buildable anymore. Having many improvised modules break original plan and the result sometimes isn’t satisfactory anymore.