[HN Gopher] Open-Source Plastic Scanner
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Open-Source Plastic Scanner
Author : giuliomagnifico
Score : 72 points
Date : 2021-11-18 19:49 UTC (3 hours ago)
(HTM) web link (plasticscanner.com)
(TXT) w3m dump (plasticscanner.com)
| Wesxdz wrote:
| Really like the high quality design of the paper! EUR250 for a
| kit + shipping/assembly time does seem like a heavy price that
| would take a long time to pay for itself if not used in a
| centralized commercial facility. I like to imagine in the future
| we'll all have circular economy infrastructure built directly
| into open source hardware appliances in our living spaces, no
| need to 'take out the trash'
| nikivi wrote:
| This is super neat. I always wondered why do the people have to
| 'sort trash' when computers or systems where this trash
| ultimately goes can do it better than even humans can. I assume
| at least.
|
| I am aware that not all plastic is recyclable but still. I think
| the system of getting everyone to do a job that can/should
| ultimately be automated is so strange. Unless it's impossible to
| do?
| Goonbaggins wrote:
| Recycling facilities everywhere use tech like this (near
| infrared) at an industrial scale [0], and sorting robots that
| use AI is a rapidly growing industry [1]
|
| [0] https://www.youtube.com/watch?v=f0OZ7Mlmkvk [1]
| https://www.youtube.com/watch?v=ZlLy-gT0n_k
| _Adam wrote:
| This is pretty cool. It looks like the cost of LEDs is by far the
| largest blocker to scaling this or making it a consumer product
| (if that's even intended). I suspect it's because they're
| esoteric frequencies are high precision. Is this precision needed
| to discriminate between different plastics or does it just
| increase the accuracy of a match?
| immmmmm wrote:
| i work with IR emitters (LEDs) (similar to this project but
| with several cameras), in the SWIR range a single LED can
| easily cost 10-20$. they tend to have very low efficiency at
| these wavelengths too, typ around 1mW/sr (120 degrees) at 50mA.
| a good SWIR setup with a camera and led illumination will
| quickly be 20-50k.
| mrfusion wrote:
| I wonder if an app on a phone could do this?
| abetusk wrote:
| I think some links are broken in the plasticscanner.com site, but
| it does look to be open source.
|
| * Thesis:
| https://repository.tudelft.nl/islandora/object/uuid:1fa997b7...
|
| * Wikifactor:
| https://wikifactory.com/+plasticidentificationanywhere/break...
|
| * EasyEDA Schematic and PCB (GPLv3):
| https://easyeda.com/jerzeek/nir-spectroscope-final-pcb
| system2 wrote:
| In the video it said 75% of plastic can be identified. What's
| with the remaining 25%? What's the next process to identify the
| remaining 25%?
|
| Also: Total cost Breakout board EUR176.97.
|
| Sounds a little extreme for it. Is it supposed to be this
| expensive?
| jareklupinski wrote:
| that how much I would expect to pay for one unit of a custom
| assembled circuit board, with parts and shipping
|
| my manufacturer makes me buy two though :)
|
| seems to be some more info on the theory behind the operation
| and limitations here https://github.com/arminstr/reremeter
| mschuster91 wrote:
| We're not even recycling _ten_ percent (per [1]) of post-
| consumer plastic waste, and most of the "recycled" you see in
| advertising is hogwash - what is counted are scraps from along
| the manufacturing process that get recycled for that metric.
|
| We should be focusing on actually enabling _any_ recycling, not
| nitpicking about efficiency gains.
|
| [1]: https://www.epa.gov/facts-and-figures-about-materials-
| waste-...
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(page generated 2021-11-18 23:00 UTC)