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Hey anons

Have you ever bought something in those marketplace of used government stuff?

Is that a good idea? how was your experience?
>>
I bought an M1008 (basically a mid-80's Chevy K30 pickup) at an auction in 2008 and still own it. If you want something they have for sale, go for it. It wasn't too bad of a process and the auction houses are used to moving clueless people through the process so as long as you stay on top of what you have to do you shouldn't have any problems. It took a long time from signing off on the forms to actually being able to pick it up because the feds have to make sure you're not a terrorist first. Make sure you get SF-97 form if you buy a vehicle with it which is basically a bill of sale and proves you bought it. Be careful if you're going to buy a military-specific vehicle like the FMTV in your pic. You might find that parts for it are stupidly hard to come by, whereas there are loads of squarebody Chevy parts around for my truck. You might also have trouble registering or insured it for road use, HMMWV's are notorious for that so check around online first.

If you're just buying random junk, then just go for it.
>>
I purchased a pallet full of used computer hardware with the intention of breaking it down and reselling. Lots of Dell Poweredge servers and such. When I came to pick it up, I was told there were 24 pallets TOTAL and I had to take them all. That mistake was totally on me as I had not fully read the fine print. Out of the 24 pallets, I had maybe 2 pallets of useful or sellable items. The rest was interesting, but ultimately worthless and I'm not a hoarder. So I rented a big U-Haul and I hauled. :) Made a considerable amount of money from that deal, lots of work though.

READ THE FINE PRINT.
>>
>>2371476
Anyone got leads on good or trustworthy sites for this kind of thing? I've always been interested, but the 90's era websites always sketch me out
>>
>>2371721
>90s era websites
That's how you know you're on real government sites. Go check out the FCC databases and it's the same thing.

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Skyking fucks back to >>>/pol/ or lurk more edition.

Old thread: >>2356741

Eternal thread theme: https://www.youtube.com/watch?v=mf_P0BXrYTo

>New to /ham/? Read this shit!
http://www.arrl.org/what-is-ham-radio
https://www.fcc.gov/wireless/bureau-divisions/mobility-division/amateur-radio-service
>Your search engine of choice works well too!

The FAQ is now back:
https://wiki.cybsec.io/index.php/HamFAQ
>NEW FAQ is updated to preview 13
https://files.catbox.moe/3xr6gh.htm
>The wiki is down but is archived: https://archive.is/PjR5s
>Idiot's Guide to Coax Cable
https://www.pcs-electronics.com/guide_coax.php
>Looking for frequencies to monitor near you?
http://www.radioreference.com
>Basic Rx loop fundamentals
https://www.w8ji.com/magnetic_receiving_loops.htm
>DIY SWL Mag. Loop
http://www.kr1st.com/swlloop.htm
>Small Tx Loop
http://webclass.org/k5ijb/antennas/Small-magnetic-loops.htm
>In Depth Loop articles
http://www.kk5jy.net/magloop/
>Homebrew RF Circuits
https://www.qsl.net/va3iul/Homebrew_RF_Circuit_Design_Ideas/Homebrew_RF_Circuit_Design_Ideas.htm
>NEW Library
https://mega.nz/file/UCgEGAjb#rwNcnMAQCUUbSp8supsFvn9QEHCWUW86eLcZa16ZG4Y

>Online Practice Tests:
http://aa9pw.com/
https://hamstudy.org/
https://hamexam.org/
> Real-Time Propagation Data
http://prop.kc2g.com/
>Space Weather
https://www.swpc.noaa.gov/communities/radio-communications
>WSJT-X 2.1 User Guide
https://physics.princeton.edu/pulsar/k1jt/wsjtx-doc/wsjtx-main-2.1.2.html
>Homosexual (ft8) guide
https://www.g4ifb.com/FT8_Hinson_tips_for_HF_DXers.pdf
>APRS
http://www.aprs.org/
>how do I into Morse code in a good way?
https://pastebin.com/XwATbRrH
>>
>>2371604
>Also should swap the two magloop articles, I think the titles are mixed up with the URL.
Haven't checked, but URLs look like what you said.

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Questions that don't deserve their own thread!

Previous thread: >>2352819 (bump limit reached)

Google it, scihub it, youtube it, shitcan it!

No seriously, maybe you should throw some of your stuff out edition!

>what
Dedicated thread for un-dedicated questions.

>how
Search the internet and ask here, give us some info.

>why
Creating threads would cause old thread to go "bye bye", and this is a slow board.
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>>
>>2371621
>>2371620
McMaster doesnt even ship to canada, it says right on their site
>>
>>2371622
that could be why i forgot then, i don't order from there but once in a blue moon
>>
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Lightswitch for my canopy mounted lights on my tractor doesn't work anymore. Come to find out one of the wires isn't even connected. Thing was only installed last Fall. It was always fiddly and zapping me when I tried to get it to work but now it doesn't work at all and the switch even feels mushy, like there aren't any detents anymore.
>>
>>2371547
do they eat spiders?
>>
>>2371508
Did you try fabory? They are EU, owned by Grainger afaik and they can get lots of imperial sized stuff

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Hello. I am a medieval history enthusiast who's really into HEMA, armed combat sports and LARPs like that in general. I've recently found out that by buying loose rings, one can create mail armor by himself. Has anyone here tried anything similar before? If so, what was your experience like?
How do you think that a DIY newbie would fare with such a task?
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>>2371546
i mean, nobody fucks with me anyway, i don't live in a place where i have to worry too much about that.
town has gone to shit, what with a development boom, but it hasn't got that bad, i think the cops still chase the homeless out, no tent cities here.
>>
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>>2371543
Unfortunately that's not brigandine; it's closer to what's called a jack of plates (and even then the creator missed the point; the plates have no overlap). Brigandine is reasonably complex on the inside; the plates are tailored so they all overlap while keeping it all form fitting.
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>>2361341
I do actually know about that, work generally with chain maille and wire crafting, and would solely with that if sold enough
a plain chain mail sheet is reasonably easy enough to do just given time to craft, though for me, its even more like a zen activity to pass the time and relax
you can even make your own rings from steel wire and cutting it yourself, though a few things have to be taken into consideration, like hardness of the steel
soldering not even necessary, granted that rings are strong enough to hold themselves, but on the topic of wire crafting in general, I'm looking for a better way to solder, like that powered jumper for really efficient point fusion
>>
>>2370320
is that one one the left aluminum?
>>
>>2371716
yes, 14 swg 7/16" bright aluminum vs 16 swg riveted 7/16" mild steel

>>2371711
pro tip: instead of snipping all the way through the wire with your cutters, juat gently score the wire about 1/4 through then twist the ring off the coil along the score. It'll break off with a flush end that pulls hair a whole lot less than snipped rings do. Like you can see on the left here
>>2370320

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old thread >>2344388

Eternal thread theme: https://www.youtube.com/watch?v=mf_P0BXrYTo

>New to /ham/? Read this shit!
http://www.arrl.org/what-is-ham-radio
https://www.fcc.gov/wireless/bureau-divisions/mobility-division/amateur-radio-service
>Your search engine of choice works well too!

The FAQ is now back:
https://wiki.cybsec.io/index.php/HamFAQ
>NEW FAQ is updated to preview 13
https://files.catbox.moe/3xr6gh.htm
>The wiki is down but is archived: https://archive.is/PjR5s
>Idiot's Guide to Coax Cable
https://www.pcs-electronics.com/guide_coax.php
>Looking for frequencies to monitor near you?
http://www.radioreference.com
>Basic Rx loop fundamentals
https://www.w8ji.com/magnetic_receiving_loops.htm
>DIY SWL Mag. Loop
http://www.kr1st.com/swlloop.htm
>Small Tx Loop
http://www.kk5jy.net/magloop/
>In Depth Loop articles
http://webclass.org/k5ijb/antennas/Small-magnetic-loops.htm
>Homebrew RF Circuits
https://www.qsl.net/va3iul/Homebrew_RF_Circuit_Design_Ideas/Homebrew_RF_Circuit_Design_Ideas.htm
>NEW Library
https://mega.nz/file/UCgEGAjb#rwNcnMAQCUUbSp8supsFvn9QEHCWUW86eLcZa16ZG4Y

>Online Practice Tests:
http://aa9pw.com/
https://hamstudy.org/
https://hamexam.org/
> Real-Time Propagation Data
http://prop.kc2g.com/
>Space Weather
https://www.swpc.noaa.gov/communities/radio-communications
>WSJT-X 2.1 User Guide
https://physics.princeton.edu/pulsar/k1jt/wsjtx-doc/wsjtx-main-2.1.2.html
>Homosexual (ft8) guide
https://www.g4ifb.com/FT8_Hinson_tips_for_HF_DXers.pdf
>APRS
http://www.aprs.org/
>how do I into Morse code in a good way?
https://pastebin.com/XwATbRrH
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>>
>>2371421
Perhaps you should kys
>>
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Also should swap the two magloop articles, I think the titles are mixed up with the URL.
Speaking of which. Slapped my copper tube on this little guy and made like 30 contacts before bed. I think the guts are just two caps and it was more than enough for handling the Xiegu. Some 6:1 vernier reduction drives are on order (it seems that's all people order those for).
Tune shifted like 100khz when I woke up.
Cheap active loop picked up some 2200m. Using a TV splitter rated down to 5mhz and I think the preamp on it is actually a TV amp so I don't think several of the parts are rated for it. There's a ridiculous amount of modes and freq's for those bands that it's kinda annoying trying to guess which ones to monitor in what mode so I dunno if I'm doing it right. 136, 196 and 474.2 are the freq's that seem to be used.
Weird stuff on active vs passive loop. Roughly same location in house pointed same way and there's a +/- spread of 20db between the two. Just random on which one will be better.

Also weird that the MFJ uses two tuning caps but the normal designs just use one? Maybe the second cap is to make up for not having the smaller loop inside the loop and altogether it forms a pi matching network? I dunno. All my resonant antennas seem about the same inside performance wise.
>>
If anyone knows any cheap variable cap places I'd love to hear. I'm not about to drop $200 on a vacuum cap just so I can do 20 watts. The MFJ uses those plastic kind that are just barely a step up from what you'd find in a manual tune AM/FM radio.
>>
>>2371192
>TruSDX on a group buy would be nice but I aint paying $110 for a kit w/o a case
It's $90 on AliExpress and use a coupon. I paid like $85 after shipping. Even if it were $110 there isn't a better HF transceiver kit at this price.
>and there's part shortages on like 10 of their components.
Not in Chiner. My guess is China ham who sells the kits works in a related industry so has access to components without requiring huge MOQs that are possibly unavailable right now to the print-on-demand PCB companies (similar catch-22 a lot of businesses have been stuck in).
Only approved kit right now is China kit. They're also the cheapest and most efficient. https://dl2man.de/where-to-buy-trusdx/
>>2371421
>I guess the errors were due to a mistaken attempts of using near-equivalent chips.
It's not even that, like the Chinese kit uses different relays, the problem seems to be they didn't fucking test anything. More damning is they did numerous print runs, selling out each one, weeks and months apart, seemingly without testing any of the units or worse they knew they were shit and kept selling them. They continued shipping kits even after hearing reports of problems.
The irony being dl2man and the others on usdx forked it to trusdx in part because they were sick of dealing with problems from Chinese sellers putting in wrong components and selling it as usdx on eBay/aliexpress and pissed customers flooding the forums with problems thinking it was an issue with the design. This is why there is a list of approved sellers. If anyone spends a minute on the trusdx forum and assembly instructions researching their purchase they probably won't be ordering from RoWaves or other non-approved sellers.
>>
NEW THREAD: >>2371723
QSY >>2371723
SWITCH CHANNELS >>2371723

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Alright /diy/, lets see if you guys are actually handymen or not...

I have some car trouble, it doesn't want to start up, did some general maintenance earlier this year, just a couple months back I think, here is the details:
>battery is good, and still I've jumped it with another working battery just to make sure it isn't weak
>starter motor goes on but engine doesn't start, I've tried a quite a lot and even tried pumping the gas pedal
>spark plugs are new I think changed on the last maintenance, and they were working great until now
>fuel pumps and filters should also be up to the task, tho I'm not sure if they been serviced in the last maintenance

Car is a 2003 Peugeot , direct injection, so I'm mostly inclined to say its something with the fuel delivery, either bad fuel or bad pump. Fuel is still just short of a half tank, but due to the recent gas price ranking up, I've really haven't been going out too much lately, so its likely like a month or more since I last filled my tank, so I'm guessing its a combination of bad gas going old.

Question is, easy ways to try solve this, either draining a bit of gas from the lining, checking the pump or whatever, taking into consideration I would be doing this on my apartment's garage?
The only alternative being calling a tow-car to send my shit to another mechanic professional. Keep in mind I am well versed in mechanics in general, but not in car stuff nor do I have plenty of tools at my disposal.
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>>2371679
Yeah for reference this picture looks exactly like my own, which is likely different engine model than sold elsewhere
also, I doubt its the spark plugs and coils, as these I'm sure were changed in the last overhaul maintenance, one of the problems specifically being one of them failing, and afaik there is something about you having to change the whole group instead individual plugs or something like that
>>
I spray starting fluid in it to see if it starts, if no start, i would check if the timing chain/belt have failed
>>
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>>2371686
Spark plugs either work or they don't, I've driven 30 year old spark plugs with 200.000 km's on them and the car ran better with new ones but it also worked with the old ones.

If you had 1 spark Plug not working your car would have run like shit on 3 cylinders and after some time the catalytic converter might even have melted.

What shops do is change spark plugs "after plan" every 60.000-160.000 (depending on car). The workshop probably told you they were "bad" because they were old. And nobody changes 1 spark plug, you always change all of them. Everything else makes no sense, just like with brake pads.

Coils on the other hand break on occasion - mostly because of heat when they are too close near exhaust headers. But nobody changes coils "after plan". So you probably still have the first coil in there. There are systems with 1 single coil for all 4 cylinders - which is what I guess your engine has, picture related.
My guess is still the coil.
>>
>>2371671
On your way home buy a can of starting fluid or carb/throttle body cleaner. That's the easiest and quickest way to tell you if it's spark or fuel related. See >>2371639
>>
>>2371698
No, its definitely not on "planned change", I'm not sure which part was bad, but spark plugs can get troublesome due to wear out and dirty residues from fuel
But the problem was real, it was chugging up in lower rotations, going smoother on higher, but still with a big loss of noticeable power,
eitherway, coil or plug its very unlikely the issue I'm having now

I've mentioned but no one gone into the case of bad fuel

Hey guys. Just got night work as an electrician starting today in Tennant improvement. I've never done night work before. Any tips?
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>>2368937
Electricians have state-issued licenses. Helpers and laborers do not. Simple as. You are not an electrician.
>>
>>2370764
Get in the attic and pull that wire Steven Residential electricians are house ropers
>>
>>2370777
LMAO!! The butthurt is strong with this helper!!
>>
>>2368112
Caffeine pills are dramatically cheaper than energy drinks. I always kept them in my glove box.
>>
>>2370940
haha the wire monkey knows his place, the only person with a hurt ass is you bucko

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Story bellow...
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>>2366898
Are there any good hole digging tubes? Long videos, not minute long clickbait


I watched all this guys in like one go:
>>2367054


And Colin furze is insufferable
>>
>>2366899
Built for big digger nick
>>
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>>2371631
digging the whole itself is pretty boring, dirty and loud. Exploring the whole you've created is amazing. t- anon who explores tunnels and caves on the Rail Trail.
>>
>>2371631
Did you watch this guy. It didn't go anywhere but crazy funny guy.
https://www.youtube.com/watch?v=31J5IrtpdT4
>>
>>2370608
Illustration from Eggers' THE WITCH movie? Syh

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My CRT has wonky colors, how do i make a degaussing coil? Seems nobody sells them anymore where i live.
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>>2370446
>that's even remotely the same
Retard
>>
>>2370612
Not a very good way though.
>>
>>2370446
If somebody wants to make something all the power to them
it's the essence of /diy/
>>
>>2370581
>0.2A*50Ohm = 25V
>>
>>2370209
>he's using a CRT that doesn't have built in degauss
what the fuck is wrong with you nostalgia retards??

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burned out boomer thread >>2364165

>I'm new to electronics. Where to get started?
It is an art/science of applying principles to requirements.
Find problem, learn principles, design and verify solution, build, test, post results, repeat.

>Incredibly comprehensive list of electronics resources:
https://github.com/kitspace/awesome-electronics
Additional resources below:

>Project ideas:
http://adafruit.com
http://instructables.com/tag/type-id/category-technology/
http://makezine.com/category/electronics/

>Don't ask, roll:
https://github.com/Rocheez/4chan-electronics-challenges/blob/master/list-of-challenges.png

>Archive of Popular Electronics magazines (1954-2003):
https://worldradiohistory.com/Popular-Electronics-Guide.htm
>Microchip Tips and Tricks PDF:
https://ww1.microchip.com/downloads/en/devicedoc/01146b.pdf
>Li+/LiPo batteries required reading:
http://www.elteconline.com/download/pdf/SAFT-RIC-LI-ION-Safety-Recommendations.pdf

>Books:
http://libgen.rs/

>Principles (by increasing skill level):
Mims III, Getting Started in Electronics
Geier, How to Diagnose & Fix Everything Electronic
Kybett & Boysen, All New Electronics Self-Teaching Guide
Scherz & Monk, Practical Electronics for Inventors (arguably has minor issues with mains grounding)
Horowitz and Hill, The Art of Electronics

>Recommended Design/verification tools:
KiCAD 6+
Circuitmaker
Logisim Evolution

>Recommended Components/equipment:
Octopart
eBay/AliExpress sellers, for component assortments/sample kits (caveat emptor)
Local independent electronics distributors
ladyada.net/library/procure/hobbyist.html

>More related YouTube channels:
mjlorton
jkgamm041
EcProjects
Photonvids
sdgelectronics
paceworldwide

>I have junk, what do?
Shitcan it
>consumer product support or PC building?
>>>/g/
>household/premises wiring?
More rules-driven than engineering, try /qtddtot/ or sparky general first
>antigravity and/or overunity?
Go away
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>>2371516
I see a fat man throwing a turd at 3 peepos.
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>>2368623
where can I get a raspi or a similar computer now with analog low resolution video output?
>>
>>2371516
you x rayed this? why? how? wtf
>>
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>>2371713
>you x rayed this?
Yes
>why
to check that all the balls had reflown and were nice and spherical
>how
with pic related
>>
>>2371715
fuckin wild!

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DIY/Workplace horror stories
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>>2368236
so why arent the belts covered so retards cant stick bodyparts near or in them?
>>
>>2371650
I bet the maintenance fags got tired of taking the cover off every time they had to replace the belt so they started leaving it off.
>>
>>2371685
i mean to be honest i do work for a large international american company in europe, cant shit without filing 2 forms. its just so hard to imagine that shit like this ever happens and is being accepted.
our plant would be shut down if something like this happened
>>
>>2371697
>cant shit without filing 2 forms
Surely it'd be cheaper to just buy toilet paper?
>>
>>2371132
Damn kids sure are retarded these days. I don't know what you expected though IT is for retards.

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What have you bought lately? Be it tools, equipment, decorations, appliances, materials... anything that might have slightly enriched your homestead

Any regrets? What are you looking to buy next?
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>>2371169
Ontario too
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>>2371221
Good man
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>>2371169
Florida only allows “package stores” to sell booze or some shit. Grocery stores sell beer and wine, but you gotta go to Publix Liquor or Walgreens Liquor

Goofy old Puritan type laws in the south that aren’t getting repealed because somebody who owns a lot of liquor stores is lobbying the politicians.
>>
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>>2366602
A leather rope for rope skipping for 19 Euros. Getting back in shape is always a great investment.
>>
>>2371408
Is it normal to get back pain after using one?

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my father and i have recently been looking at houses in a major US city to turn into a multifamily building and rent out. I would live there(he lives far from the city), coordinate renovation etc., and manage rental in exchange for living there and getting the property once it is paid off. sounds like a sweet deal but i am starting to think we are biting off more than we can chew. we are thinking 3-5 paid units for reference
pros:
>income+housing
>learning opportunity
>potential for nice garden in yard(huge benefit in a city imo)
>could use for less leechy purposes than being landChad
>could also turn around and sell for comfy apt. if the work is too much
>dad has some limited experience with reno
>family friend willing to do interior carpentry(his lifetime career) so def can learn from that
cons:
>time pressure to start renting will prob mean little work actually done by me (more $, less learning)
>dad has mentioned how much "space for addition"(or worse, parking) there is in yard so garden dream may not come true
>if it goes sideways, stuck in mortgage in very high RE market+just hiked interest rates
>could be way more $ than we thought with labor and mats cost being how they are
>management job could be way more work than I want to do
thoughts? anyone have relevant experience?
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>>2371652
>Sounds like you should probably let whoever has the cash make the decisions.
taking a job is definitely my decision lol
>you aren't on their teet anymore
i have lived on my own money for a year. i was more asking if this is something that could reasonably be handled by a lad and his father who has done some basic stuff before. if i decide i'm not interested, i will continue with my life and he may or may not move forward
>it's an income property use it like one an skip the garden.
fair point
>>
>>2371640
>i am looking to be a landlord
Alright there Schlomo, go fuck yourself. Give good honest working people a chance to own property.
>>
Remodeling a house is easy. What you seem to be glossing over as inconsequential is the actual work of being a landlord. What kind of renter do you think a halfassed multi-unit conversion of a house is going to attract? The answer, let me tell you, is problems. Niggers, beaners, and white trash, who will destroy your property and will have at their disposal free legal advice on how to fuck you over thoroughly if you don't follow the letter of the law perfectly.
>>
>>2371684
well first obvious step would be to run it through an llc so personal assets aren't in danger
second, yes, have lived in cheap apartment in the area and had some pretty awful neighbors.
i figured completely new interior and care for the building would price out at least the absolute bottom of the barrel. i would expect this to be my full time job though atleast until it is paid off and then i could sell and get a small place for myself if it is too much headache.
>>
>>2371694
>price out at least the absolute bottom of the barrel
No such thing as too high a price when you're not intending to pay.

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Last thread: >>2364065

All the info you need about 3D-printing: https://pastebin.com/AKqpcyN5
>Your print failed? Go to:
https://www.simplify3d.com/support/print-quality-troubleshooting/

If that doesn't help you solve your print problems, please post:
>A picture of the failed part
>Printer make & model
>Filament type/brand
>Slicer & slicer settings

>What printer should I buy? [Last updated 12-20-2021]
Under 250 USD: Chingroon KP3L(Look for reviews), Sovol sv01, Creality Ender 3 Pro (v2), Anycubic Mega S
Under 500 USD: Qidi X-One2, Creality CR-10, Anycubic Vyper, Prusa Mini,
Under 1000 USD: Prusa i3, Flashforge creator pro 2
Over 1000 USD: e3d toolchanger, Ultimaker, Markforged, Build your own voron, Prusa XL (lol enjoy the wait)
SLA: Anycubic Photon, Elegoo Mars, Prusa SL1, Formlabs Form 3, Creality HALOT-ONE
Instead of buying a new printer, you could consider building your own: https://reprap.org/wiki/

>Where can I get free things to print?
https://www.thingiverse.com/
https://thangs.com/
https://grabcad.com/
https://google.com/

>What CAD software should I use?
Variants of professional programs such as Solidworks (lol paying for software), Fusion360, Inventor, Onshape, and AutoCAD may be free depending on your profession, level of piracy and definition of ''free''.
Most anons use Fusion360, but some /g/oobers prefer OpenSCAD or FreeCAD. If you want to do free-forming and modeling, Blender is alright. Also while not necessarily a design program, Meshmixer (free) can be extremely useful for tweaking models to print.
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>>2371575
Get a refurb Ender 3 from Comgrow
It'll probably be new and if they're running a sale they go as low as 109 dollars
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>>2371571
>Belt tightness does not lead to that sort of thing. And stuff like steps/mm being incorrect doesn't lead to that sort of stuff either

ok well, i tightened up the belt and made the tension a bit tighter now. tightened up some other parts around the motors as well and the print looks a lot better now.
i guess this is why you shouldnt listen to shitposters that offer no help at all.
thanks for replying though i guess.
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Talk me out of blowing $200 on filament at paramount. Fuck their fighter jet blue and teal are fantastic. I wonder how good their ABS is mechanically compared to matterhacker's.
>>2371670
It's always worth it to home your machine, jog it over to the center of the bed, raise it ~5cm, and trying to wiggle the nozzle with your index finger and seeing if you have any clear wobble on your head or bed.
With the steppers holding torque anything moving is indication of something being loose, within reason.
It can be kind of hard to tell if you're feeling flex or actual looseness, so be reasonable. If it isn't obvious then leave it alone.
Obviously while cold, too. Post new print. And as much I hate the fagboat, I cannot argue that it's a much better basic benchmark than the prusa nameplate.
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is esun's pla+ a good choice for a main filament? reviews are all over the place for all filaments just trying to figure out what to buy.
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>>2371700
I've only tried an old batch when it was first launched, and it was basically like a mixture between PLA and ABS. You do have to print it slightly hotter, bridging and overhangs are slightly reduced, and it is less stiff. I've also seen it warp on some anons here but I don't think it's something to be concerned about or if it is even a brand specific problem. Think of it as pla that probably won't break at the first impact.
tldr buy a spool in a nice color and report back.

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I want a self driving small robot car trained with machine learning. What's the best way to do it?

Currently my car is Arduino run and remote controlled with a small IR remote. I don't need it to do anything complicated, just constantly drive random paths in my apartment and dodge the occasional obstacle detected with the ultrasonic sensor

I was hoping I could create a simulation of the car in my apartment in something like Webots and train the machine learning algorithm off the simulated data rather than any real data
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>>2370789
What is the task you want to solve and what is your budget? How small does the platform need to be? How many Watts can you use for computation? What you're looking for could be anything really, from only an arduino (although unlikely) to a small PC. Our robots use an Intel NUC with Ubuntu + ROS. From there we communicate to a hardware controller (CM740 in our case), which could be the arduino for you. Honestly, if you can spare the power and weight, I strongly recommend a proper computer with ROS. Makes things easier for you, especially as a beginner. In addition to that, my personal experience with Raspberry pi's has always been bad, so I personally would not recommend them. To be fair, there are other people that like them, to me the lack of binaries for ARM was just always too annoying (been a few years since I last used them, to be fair). Have fun with your project and good luck!
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>>2370804
>>2371489
I should have elaborated I eventually want to add a camera to detect a human wearing a particular color and have the robot follow that color. The learning component should be about what is the best way to follow a human?

But I was hoping I could somehow get simulated data instead of real data to do the training, within a framework (probably) of reinforcement learning

>>2371263
Yes. I should have said I don't want to run any processing on the car itself, all sensor data should be sent back to a PC over wifi, processed, then the left/right/forward/backwards/stop control commands should be sent back over wifi
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>>2370804 #
>>2371489 #
I should have elaborated I eventually want to add a camera to detect a human wearing a particular color and have the robot follow that color. The learning component should be about what is the best way to follow a human?
>>2371263 #
Yes. I should have said I don't want to run any processing on the car itself, all sensor data should be sent back to a PC over wifi, processed, then the left/right/forward/backwards/stop control commands should be sent back over wifi
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>>2371681
IMO machine learning is not necessary for the task, especially not the path planning component. Depending on how robust you want it to work, it may be more valuable to train a "T-shirt guy detection network". The person-following part, I would for starters implement as a simple P-Controller based on the image observations. On the other hand, if you want to do RL, yes, you'll really want to write a simulator. Since you don't really care about how realistic your simulation is, I would code a simple python environment. I would not bother for something like gazebo, in my experience it's too slow for comfort. For training I would recommend Ray's RLLib, I personally used it for a handful publications and it works quite well. Whatever you decide, I would really recommend to separate the problem of detection and path planning as well as possible. Always 1. process image, 2. generate nominal position, 3. control the hardware, and each individual step should work independent of the others. This makes your work easier to test. Choose whatever step you find most interesting and start with that. Good luck!
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Hmm, I think
>>2371704
Was meant to reply to
>>2371695

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