#linuxcnc Logs
Apr 22 2025
#linuxcnc Calendar
12:32 AM lcnc-relay: <meisterdippel@> moin
12:54 AM Deejay: moin
04:24 AM Tom_L: morning
06:40 AM rdtsc-w: dunno about solar; work very close to two First Solar facilities - they've grown massively over the decades and churn out truckloads of panels every day. There's some amazing advancements in solar tech coming though - boost from 21% to 50% efficiency apparently
06:41 AM rdtsc-w: moin Deejay :)
06:41 AM bjorkintosh: what do they do with the used solar panels after they expire?
06:42 AM rdtsc-w: good question - current tech uses cadmium and tellurium
06:47 AM rdtsc-w: https://www.nbcnews.com/science/environment/first-generation-solar-panels-will-wear-recycling-industry-taking-shap-rcna97562
06:48 AM bjorkintosh: avoiding nuclear power generation with extra steps.
06:49 AM bjorkintosh: companies struggle to justify the $30 per panel cost when it costs only $1 to send it to a landfill.
06:49 AM bjorkintosh: 30 dollars per panel to recycle? goodness.
06:58 AM bjorkintosh: my prediction is that if the recycling costs don't go down (or subsidies aren't liberally spread), they'll simply ship the panels 'elsewhere'.
06:58 AM bjorkintosh: much cheaper.
07:01 AM lcnc-relay: <travis_farmer@> Morning
12:08 PM flyback: that's so gay
12:08 PM flyback: seriously
12:08 PM flyback: landfilling solar panels
12:08 PM flyback: you can cut out the bad parts and use what's left with a smps/mppt controller
12:08 PM flyback: with reduced output but they can still power a shitload of projects
12:09 PM flyback: I wish they would toss out a bunch around here
12:09 PM xxcoder: whats being gay got to do with that
12:09 PM bjorkintosh: it's all about the cost, flyback.
12:09 PM bjorkintosh: if you can figure out a way to process it for less than the cost of landfilling...
12:10 PM flyback: xxcoder, sorry, habit from another channel :P
12:10 PM roycroft: please do not use homophobic languate here
12:10 PM flyback: ok
12:10 PM roycroft: language, rather
12:10 PM xxcoder: I suppose can always sell scrap panels for people to rework or something
12:10 PM flyback: xxcoder, yeah I can't see a panle not having some value left unless it's totally smashed
12:11 PM roycroft: but to the main point, the eu has mostly solved the problem by requiring manufactures to take return of failed/outdated products and dispense of them cleanly
12:11 PM flyback: I mean you got a 500w panel that's down to 100w that's still a hell of a solar cell for a remote wifi station
12:11 PM roycroft: it encourages cradle to cradle manufacturning, not cradle to grave
12:11 PM xxcoder: closed cycle sales yeah
12:11 PM flyback: that's fine also
12:11 PM flyback: speaking of
12:11 PM flyback: this powedge 2900 dual quad core2 is ****
12:12 PM flyback: it's one of two I am wiping for a client for my soon to be ex-boss :(
12:12 PM roycroft: in this country we (the regime) encourages manufacture at the cheapest possible cost and externalizing the end consequences
12:12 PM flyback: bad caps, heatsink mounts rotted off due to bad solder, really old
12:12 PM xxcoder: solar panels may star getting properly recycled in usa. what with heavy tariffs on solar oanels now
12:12 PM flyback: I think I am going to pull both psu's and keep them
12:12 PM flyback: they are straight +12 output
12:12 PM flyback: plus control and monitoring i2c bus
12:13 PM flyback: and like 20 watts 3.3v standby
12:13 PM flyback: 700 watts =12
12:13 PM flyback: +12
12:13 PM roycroft: what needs to happen is they need to start being manufactured in such a way that they can be dismantled and the components reused in a cost effective manner
12:13 PM flyback: but the machine is *CANUCKED*!
12:13 PM * flyback rubs veegee on it
12:13 PM roycroft: and the cost of recycling them need to be calculated in the sale price
12:13 PM bjorkintosh: what's vg?
12:13 PM waterppk: I had someone buy a literal truckload of broken glass panels, apparently had family in Mexico and can run them in the desert for years without issues even with broken glass
12:14 PM flyback: yeah you can cut and splice wires
12:14 PM flyback: around the damage in a panel
12:14 PM flyback: you just need a smps to make up the voltage change
12:14 PM bjorkintosh: well, when one refrigerator here consumes as much energy as a whole household in a 3rd world country...
12:14 PM bjorkintosh: perhaps it's a power overconsumption issue in the end.
12:14 PM rdtsc-w: flyback - repurposed a PowerEdge 1800 dual-xeon (four whopping cores) at work... now it crunches boinc cancer research packets (quite slowly lol)
12:15 PM flyback: yeah well this one has broken heatsink mounts and bad caps
12:15 PM flyback: it's done
12:15 PM flyback: I think I am going to keep the ibm system p5 520 power5+ server
12:15 PM flyback: the psu has a cold start issue but I think it's fixable
12:15 PM bjorkintosh: https://www.lemonde.fr/en/economy/article/2023/06/20/an-american-refrigerator-uses-three-and-a-half-times-an-average-african-s-total-yearly-electricity-consumption_6034419_19.html
12:15 PM waterppk: we get them donated from a solar installer, most of them have suspicious sized holes that look an awful lot like Milwaukee M18's falling from about 10 feet up ;-)
12:16 PM flyback: hell even a odd voltage broken solar cell
12:16 PM flyback: can be used with a dc fan
12:16 PM flyback: to provide roof cooling etc
12:16 PM flyback: to reduce power bills
12:16 PM JT-Cave: https://pasteboard.co/oMBfw2vsItTf.png
12:16 PM flyback: I mean I just can't see a solar panel being $0 unless it's totally shorted out
12:16 PM xxcoder: jt nice dark scheme
12:17 PM flyback: btw
12:17 PM flyback: since they get used for projects or for rc vechile/drone chargers
12:18 PM flyback: most of the different server psu wirings are documented now
12:18 PM flyback: so keep that in mind
12:18 PM flyback: how to get them to turn on, monitor the output, control the fan etc
12:21 PM bjorkintosh: flyback: so what then do you do with the shorted out ones?
12:21 PM flyback: solar panels?
12:21 PM bjorkintosh: recycle for 30 dollars, or bury for 1 dollar?
12:21 PM flyback: sometimes you can cut out the shorts
12:22 PM pcw-home: Yeah back power and use a thermal camera
12:22 PM bjorkintosh: sure. but they have a life span don't they?
12:22 PM flyback: well in 20 yrs their output reduces a bit but still I would think you could find plenty of projects
12:23 PM pcw-home: Life span is mostly the polymer
12:23 PM flyback: a high end wifi routrer is mabye 30w
12:23 PM bjorkintosh: just the polymer? I see.
12:23 PM bjorkintosh: well, maybe if we don't defund and chase away all the scientists, someone might be paid to figure it out.
12:24 PM pcw-home: There are some new panels with no plastic glue
12:24 PM flyback: I need a nap bbl
01:13 PM roycroft: of interest might be a book title "cradle to cradle", written by william mcdonough about 20 years ago
01:15 PM flyback: yeah im going to save those psu's
01:15 PM flyback: 12v@75 amps
01:15 PM roycroft: https://www.amazon.com/dp/0865475873
01:15 PM Tom_L: they grind up tires to use as padding in playgrounds etc and found it's causing cancer
01:16 PM Tom_L: i say stack them up and make a stairway to mars
01:17 PM Tom_L: there's likely enough out there
01:17 PM flyback: bah I doubt tires cause cancer
01:17 PM flyback: unless they eat them
01:17 PM flyback: they also mix them with asphalt to make roadways
01:17 PM flyback: makes the road last longer
01:17 PM flyback: resist ice cracking
01:17 PM Tom_L: the flakes after ground and put on playgrounds
01:18 PM Tom_L: https://www.theguardian.com/us-news/2019/jun/25/lawmakers-concerned-chemicals-rubber-playgrounds-push-safety-rules
01:19 PM flyback: https://www.amazon.com/Mining-Supply-Breakout-Server-1200FB/dp/B0829296WS
01:19 PM flyback: brakeout for server psu
01:19 PM flyback: to power stuff
01:20 PM flyback: https://www.amazon.com/Mustpoint-Breakout-Adjustable-Voltage-FUJITSU/dp/B0CYL5QCN2/ref=sr_1_26?dib=eyJ2IjoiMSJ9.h5K_ugWxUFB6sLfhag238Rw7cWLKTOuPyTOmqfyWk-hDri_t0YX2lmQ09VdBsr496ZGdXJAajH_6f2mHVz4ayoGL6pXlf1KAZPcefayxLuyMGDym-zXs7HvdBW-Kuk727t_TyJ9npHuXPib2w0lFJU7pGN_YztyP-AoYDrctIy-ByfpiR8EPHNPD561ZgE-j6gTzOpHfTfhdDkTKdWOpWN15YKYMtbBfiMiDFErSQTHhai4M_wKTeNWp7GedOuMYzd4mJTLn1O5C_d6vj5xwhvKXxiXpLlArM1VOhweBDpc.unlgV797Zr8It-ZWwT8Vz
01:20 PM flyback: ITPt09G_7g2FiK6JZZMlpc&dib_tag=se&keywords=Computer+Power+Supplies+breakout+board&qid=1745345393&s=pc&sr=1-26
01:20 PM flyback: fancy
01:21 PM roycroft: how about sending a more concise url?
01:21 PM flyback: how about you bmcc
01:22 PM * Tom_L slaps flyback with a wet noodle
01:22 PM flyback: !bmcc roycroft
01:22 PM flyback: <corsehock> roycroft: BITE MY 'CANUCK', CANUCK!
01:22 PM bjorkintosh: *blink*
01:22 PM bjorkintosh: why so mild flyback :-/
01:22 PM xxcoder: 🤔
01:23 PM Tom_L: maybe he knows i'll boot him just for fun
01:23 PM flyback: of course trump tarifs have canucked- up all of this
01:23 PM roycroft: you mean the national sales tax
01:23 PM flyback: yeah
01:24 PM Tom_L: i suppose you have the right to rename that if he can rename the gulf
01:24 PM bjorkintosh: whoa not the 'tax' word.
01:24 PM bjorkintosh: 3000+ percent tariffs on imported solar panels.
01:24 PM flyback: really?
01:24 PM * roycroft is just calling it what it is
01:25 PM flyback: well I voted for trump 3 times and I don't regret it
01:25 PM flyback: but I am not a fan of the tarrifs the way they are now
01:25 PM Tom_L: let's try to stay OT... i need a nap
01:25 PM flyback: ok
01:26 PM bjorkintosh: https://www.bbc.com/news/articles/c5ygdv47vlzo US sets tariffs of up to 3,521% on South East Asia solar panels
01:26 PM bjorkintosh: yes really.
01:27 PM xxcoder: someone in discord noticed the oddity
01:27 PM xxcoder: "is this just a funny coincidence 3521 = CEBA
01:27 PM xxcoder: https://cebuyers.org/about/ceba-members/"
01:37 PM flyback: stupid
01:38 PM bjorkintosh: your chosen one flyback :-)
01:57 PM lcnc-relay: <rs> 3.521% is an oddly specific number... resolution without precision
01:58 PM lcnc-relay: <rs> or is it really threethousand?
01:59 PM bjorkintosh: three thousand, five hundred and twenty one percent
01:59 PM xxcoder: yep.
02:00 PM roycroft: just wait for the ONE MILLION percent tariff on windmills
02:01 PM xxcoder: cue dr evil
02:01 PM xxcoder: dont you know windmills vent fumes lol
02:02 PM rdtsc-w: on the up-side, windmill and solar production should be increasing shortly; great if ya need a job
02:04 PM bjorkintosh: I wouldn't be surprised if his advisers play factorio and say things like "we can just ramp up solar production"
02:04 PM bjorkintosh: like it happens in an afternoon.
02:04 PM xxcoder: windmill jobs is already going up, its been going for years
02:05 PM rdtsc-w: ain't no way I'm climbing 200+ft up in the air... nope
02:06 PM roycroft: do we have all the raw materials to make solar panels from domestic sources?
02:06 PM bjorkintosh: rdtsc-w: sure, but what about 61 meters?
02:06 PM bjorkintosh: would you do that? it's a smaller number.
02:07 PM rdtsc-w: was offered a position shortly after highschool - on-call repair of navy radar equipment - very dangerous voltages involved, swaying back and forth at the very top of a ship, possibly during wartime... nope :)
02:14 PM bjorkintosh: roycroft: I ... think so? not sure to be honest.
02:15 PM rdtsc-w: Expect a reverse 3521% tarrif on Tellurium
02:43 PM Unterhaus__ is now known as Unterhausen
02:43 PM Unterhausen: what's funny is that's pretty close to the tariff on cambodian solar panels right now