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JointHorse posted:Oh man, I missed threads like this after the big GBS-cleanout. It was discussed here earlier, and it's because Posti literally just doesn't want to deliver mail because it's actual work.
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Aug 17, 2017 11:20
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The spam you get from sellers is funny sometimesquote:I am Debbie from Elego, sales manager of Flying Team. It is my great honor to introduce our company Elego and our exclusive products to you. Yes I am drunk in rains of new products, Debbie
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Aug 17, 2017 13:13
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Metal Geir Skogul posted:All tools on Ali are garbage. 100%. Just buy another Leatherman. This except a SOG. https://www.sogknives.com/type/multi-tools.html
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Aug 17, 2017 13:48
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Speaking of multitools, my Wallet Ninja just arrived and it's literally the exact same thing as retail ones right down to the paintjob only it was 80 cents instead of 8 bucks.
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Aug 17, 2017 16:02
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spog posted:I would like to know more about this. Perhaps. At under  this thing is a toy, but it should be enough to see if there's a signal on some wire or not. Check youtube for reviews on DSO150 and DSO138, that should give you a better idea what this thing can do.
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Aug 17, 2017 16:05
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spog posted:I would like to know more about this. That scope is specced as a 200KHz/1Msps scope, and that's probably generous. I dunno how much you know about information theory or oscilloscope operation, but there is a tradeoff between bandwidth and accuracy; you can't actually measure a signal at your scope's maximum bandwidth and get an accurate reading, and you can't even see a signal with a frequency of more than half your sampling rate. Long and short of it is that I wouldn't trust it for anything faster than 70KHz, at which point it'll be accurate to about 3% (by the books, anyway) and you've got around 8 samples per cycle. (For comparison, the Rigol entry-level benchtop scope that's generally recommended for electronics hobbyists, which costs about $350, has 1000x the sample rate and 500x the bandwidth) Sooo if the noise you care about is all slower than 70kHz -- go for it. Checking USB power lines is probably one reasonable use for that, since most of the noise in a car electrical system will have car-like frequencies of a few hundred hz or less. Signals are a whole other ballpark; full-speed USB 1.1 is a 48MHz clock so you have no chance of catching it with that scope. For 20 bucks it looks neat -- just keep in mind what you're getting.
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Aug 17, 2017 16:46
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JointHorse posted:Oh man, I missed threads like this after the big GBS-cleanout. Since you have experience with this, can you comment on the quality of electronics and indicators of quality to either look for or watch out for? The general feeling itt is that electronics are a gamble and they're best avoided altogether. I enjoy the AliExpress gamble for the most part, but not when it involves my house burning down.
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Aug 17, 2017 17:12
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I wouldn't buy anything literally life critical but regular consumer goods are likely to be the exact same poo poo you'd buy anywhere else just at half the price. So far I've bought a Xiaomi camera and usb powerbank, gimbal and FPV system for my drone, a multimeter, led strips, an endoscope and a bunch of electronic components without any issues. Not sure about Ali but Banggood is relatively good at after-sale support too, if you can show their poo poo doesn't work they just refund the money without much bullshit.
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Aug 17, 2017 18:05
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Aliexpress: the exact same poo poo you'd buy anywhere else just at half the price* *And with zero oversight or regulation to make sure that your eyeshadow isn't 80% rat feces or that your D cell battery isn't secretly just two AA batteries in a hollow casing 
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Aug 17, 2017 18:23
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HazCat posted:Aliexpress: the exact same poo poo you'd buy anywhere else just at half the price* Lol holy poo poo
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Aug 17, 2017 18:42
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myDad posted:Lol holy poo poo     
Sagebrush fucked around with this message at 18:58 on Aug 17, 2017 |
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Aug 17, 2017 18:55
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If I'm buying basic electronic components, I always order more than I need. There's bound to be few bad components, but that's a given when you can buy twenty of something for the price of one from your local shop. And for other gadgets? Buy the ones that have good reviews, that's about it :p 110v/220v devices I wouldn't buy, unless you're ready to do a complete teardown. Loose connections and bad soldering does not go well with line voltages. Also, don't buy the cheapest poo poo you can find:   JointHorse fucked around with this message at 19:03 on Aug 17, 2017 |
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Aug 17, 2017 18:55
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i bought the waterproof container and the "leatherdo" hairpin and they look the same as the pictures and will probably not break if i use them once or twice
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Aug 17, 2017 19:23
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Sagebrush posted:That scope is specced as a 200KHz/1Msps scope, and that's probably generous. I dunno how much you know about information theory or oscilloscope operation, but there is a tradeoff between bandwidth and accuracy; you can't actually measure a signal at your scope's maximum bandwidth and get an accurate reading, and you can't even see a signal with a frequency of more than half your sampling rate. Long and short of it is that I wouldn't trust it for anything faster than 70KHz, at which point it'll be accurate to about 3% (by the books, anyway) and you've got around 8 samples per cycle. Gotcha. Fun Toy Can test whether a PSU is putting out clean power Can test automotive component that slowly change state (e.g. MAF or temp) Can't test digital signals Ta
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Aug 17, 2017 19:26
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spog posted:Gotcha. *if the device under test is insensitive to noise above 70KHz
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Aug 17, 2017 19:27
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Sagebrush posted:*if the device under test is insensitive to noise above 70KHz I'm thinking a simple wallwart USB power supply to tell whether it will damage an iphone or similar. i.e. comparing the dollar store ones to Apple ones
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Aug 17, 2017 19:33
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uh-huh https://www.aliexpress.com/item/Fas...2820371936.html 
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Aug 17, 2017 23:40
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Is the jagged stitching on the bill supposed to indicate that the wearer is hooked up to a heart rate monitor? Are you supposed to give this to a woman victimized so badly that she is in the hospital on life support?
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Aug 17, 2017 23:46
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very fash ionable
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Aug 18, 2017 00:35
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A Pack of Kobolds posted:Is the jagged stitching on the bill supposed to indicate that the wearer is hooked up to a heart rate monitor? Are you supposed to give this to a woman victimized so badly that she is in the hospital on life support? Well, no, because if she wore it it wouldn't be accurate. She'd need a hat that says "I am a victim". This hat is clearly for comic book villains. He just goes about his business wearing the hat, and when someone criticizes the hat saying, "I'm not a victim!" he victimizes them. "You are now, buddy." A SJW gone bad. He went mad when he realized he could never right all the wrongs in the world, so now he's bringing equality by making sure everyone is a victim.
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Aug 18, 2017 02:10
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Aug 18, 2017 02:17
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Facebook Aunt posted:Well, no, because if she wore it it wouldn't be accurate. She'd need a hat that says "I am a victim".
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Aug 18, 2017 02:41
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HazCat posted:Aliexpress: the exact same poo poo you'd buy anywhere else just at half the price* even harbor freight gives you 4 AAA batteries in their rechargeable D cells  tbf harbor freight is just the tools section of aliexpress but irl
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Aug 18, 2017 02:41
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Look at these scrubs who don't understand how batteries work  https://www.youtube.com/watch?v=c3qPrlun45c
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Aug 18, 2017 03:07
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Guy Mann posted:Look at these scrubs who don't understand how batteries work Lol
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Aug 18, 2017 03:20
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At least the components off aliexpress are (likely) safe, power & memory aren't worth the gamble
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Aug 18, 2017 03:21
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anyone need a gear shift knob
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Aug 18, 2017 03:22
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The Mad Max franchise is going in a strange new direction.
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Aug 18, 2017 04:06
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ultrafire lmao
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Aug 18, 2017 16:49
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this page really underlines the rule i have for AE/DX: Don't buy anything that takes power. It will at best, break instantly and at worst kill your family.
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Aug 18, 2017 17:08
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Just look at the reviews on the store and find a YouTube video for the thing if you're worried, otherwise just use common sense when buying electronic poo poo (the cheaper it is...)
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Aug 18, 2017 17:14
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Slugworth posted:I wanted it until I realised what it really reads as is "The person wearing this hat is accusing everyone around them of being an SJW" That same person also probably refers to people as globalists in a disparaging manner.
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Aug 18, 2017 22:21
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I can safely say that the Mars Hydro light I bought is pretty legit and the landscaping store I work for who is trying to break more into hydroponics is looking to pick up some units. Anyone who is looking for a relatively inexpensive LED grow light should check them.
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Aug 19, 2017 03:46
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CHINESE CHRISTMAS BEGINS My 100 pack of stickers came in, here's some bad photos of some of them     
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Aug 19, 2017 12:40
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Speaking of stickers, if you're curious how AliExpress stickers hold up after 2-3 months of constant Florida summer sun and rain without any sort of sealer or clear coat to protect them:  The ones on the front that are completely faded/peeled are mostly from one particular batch I got that had a matte finish instead of a glossy one.
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Aug 19, 2017 14:08
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So I ordered this LCD paperless memo pad as a gift because Techmoan's video on it made it look neat but I'd rather pay $15 for a white label product instead of a $50 name-brand Boogie Board and apparently they have a shipping center in the US or something because the free shipping was with UPS Express Saver and I got it in four days. If AliExpress keeps growing in popularity I hope more companies follow their lead because man that was a pleasant surprise. https://www.youtube.com/watch?v=few9P5ojV60
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Aug 20, 2017 01:53
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Guy Mann posted:Speaking of stickers, if you're curious how AliExpress stickers hold up after 2-3 months of constant Florida summer sun and rain without any sort of sealer or clear coat to protect them: 2K Clear Coat High Gloss. Trust me on this one.
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Aug 20, 2017 02:01
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Guy Mann posted:So I ordered this LCD paperless memo pad as a gift because Techmoan's video on it made it look neat but I'd rather pay $15 for a white label product instead of a $50 name-brand Boogie Board and apparently they have a shipping center in the US or something because the free shipping was with UPS Express Saver and I got it in four days. If AliExpress keeps growing in popularity I hope more companies follow their lead because man that was a pleasant surprise. But is it any good?
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Aug 20, 2017 02:22
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goatface posted:But is it any good? It's a gift, I may be willing to buy Chinese knockoffs but giving away opened things is just tacky  But poking around YouTube there are plenty of people who bought the same knockoff off of banggood, etc. and from a cursory glance they all say it works just fine. It looks like it's basically like an Etch-A-Sketch only using pressure-sensitive LCD instead of magnets and metal powder so the only real electric stuff is a single button battery that sends out the charge to wipe the screen, hardly complicated or sensitive stuff. https://www.youtube.com/watch?v=YEFuWuaPNKo https://www.youtube.com/watch?v=C94CB5XYdAE
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Aug 20, 2017 02:36
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The designer of an elaborate set of lingerie buys a knock-off version of it from AliExpress and gives it as fair a review as she can manage.
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Aug 20, 2017 09:20
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