The wonder of ebay parts!!11 - Page 1
Forum section: electronics / general

author: iceisfun
author_rank: Regular Contributor
timestamp: October 17, 2013, 02:57:28 am
content: So I have been working on a robot and buying parts from various places including EBAY! I'm aware there is a lot of junk out there so I ordered 1 of a few smaller things including these couplingshttp://www.ebay.com/itm/230974569929After receiving my first coupling and hooking up a 6mm shaft optical encoder to the back of a 5mm shaft stepper motor I was quite happy, the setup worked perfect and I went back to buy more of the same awesome items and got these instead!This seller deserves a TRIPPLE AAAAAA+++++ feedback rating

author: c4757p
author_rank: Super Contributor
timestamp: October 17, 2013, 02:59:28 am
content: So you got the wrong item. Contact the seller and tell them that. Problem solved.

author: iceisfun
author_rank: Regular Contributor
timestamp: October 17, 2013, 03:00:40 am
content: Right, the problem will be solved but it will take a few more weeks to get the right little part!

author: c4757p
author_rank: Super Contributor
timestamp: October 17, 2013, 03:05:09 am
content: Eh, shit happens. One of the dangers of ordering from far away.I recently ordered a bag of 50 BNC jacks for $5. Yep, $0.10 each. I received them a couple weeks later - the nuts were too big (ahem) and the locking washers were fake. (Flat metal pressed into the general shape, but no actual teeth.) I notified them, and they sent meanother bag of 50 jackswith the nuts firmly screwed in place to demonstrate that they were the correct size. The washers were still crap though. So $5 for 100 BNC jacks, 50 nuts and 100 flat washers. Not bad!

author: sleemanj
author_rank: Super Contributor
timestamp: October 17, 2013, 04:45:10 am
content: Quote from: iceisfun on October 17, 2013, 02:57:28 amLooks like you got a 5mm to 8mm coupling which is also a common size, the order packing girl probably just grabbed it from the wrong bin.They'll put it right almost certainly send you another hopefully the right size.When buying from China sometimes you win, sometimes you lose, and like in c4's case, sometimes a bit of both.

author: PedroDaGr8
author_rank: Super Contributor
timestamp: October 17, 2013, 05:49:57 am
content: I agree, yeah it kinda sucks but you are making something huge out of a small mistake. If theyshipped you a rusted piece of crap then yeah complain or one that is bent, damaged, etc. This appears to me that someone just accidentally grabbed the wrong item.

author: zapta
author_rank: Super Contributor
timestamp: October 17, 2013, 10:33:01 am
content: A little bit of duct tape around your 6mm shaft should solve the problem

author: elcomtel
author_rank: Regular Contributor
timestamp: October 17, 2013, 03:26:49 pm
content: I suppose that our western character set is just as confusing to someone in China as the Chinese character set is for us in the western world to understand.I recently ordered a 100% original and genuine 'Microchip Pickit2' debugger ICE from a seller in China on Aliexpress. Instead I was supplied with a 100% original and genuine 'Keil ULINK2' debugger ICE instead.I suppose the seller looked at his stock and was confused with a foreign alphabet and though WTF to themselves. They noticed a '2' on the end on the character string of their shipping order, so 'ULINK2' looks similar to 'Pickit2' because both character strings have a '2' on the end.So now I am the proud owner of a ICE for debugging ARM microcontrollers instead of PIC microcontrollers. I was fortunate that I also have an interest in ARM microcontrollers so the seller's mistake was accepted with open 'ARMs' (do you get it?). I could have forced the issue and pointed out their mistake and received a replacement. It wasn't worth the trouble over $15 and I decided to leave it at that. I also left the seller positive feedback on the Aliexpress website. They sent me something useful by mistake, so I couldn't be upset with that.I am fascinated by how the Chinese can sell 100% original and genuine products for one tenth of the cost in the west. It would appear that the sales tax in China is considerably lower than in the western world. Hip Hooray for the Chinese !!! Our world would be much worse without them.

author: Zbig
author_rank: Frequent Contributor
timestamp: October 17, 2013, 04:50:02 pm
content: You do realize it's kinda cool photo in its own right? The reflection on the coupling, etc. Have you tried trimming (to square, perhaps) and downsizing it (to get rid of some of the noise)?

author: Unknown
author_rank: Unknown
timestamp: October 17, 2013, 05:35:18 pm
content: Anything marked as 100% original and genuine is usually 100% fake in my experience.

author: Rick Law
author_rank: Super Contributor
timestamp: October 18, 2013, 04:44:01 am
content: Ever since the wheel was invented by man, men have been dealing with getting the wrong part...Man: Urr… I have a problem with my latest order. I ordered a 80287, but you shipped me a 80286.Customer Service Agent: Let me look up your order. One moment please…. Sir, I confirmed that you did order the 80287 and we did ship you the 80286,Man: So, can you give me an RMA number so I can return this for the proper shipment.Customer Service Agent: I am sorry, I cannot issue an RMA Sir.Man: Why? This part clearly is not right.Customer Service Agent: According to our sales agreement, all parts in this category have a 0.5% tolerance.Man: But this is a CPU and I wanted the floating point coprocessor.Customer Service Agent: That may well be, but this part is within tolerance, Sir.Man: What?Customer Service Agent: I have my calculator right in front of me. 80287 minus 80286 divided by 80287 is 0.0000125. This is 0.001% and well within the 0.5% tolerance, Sir.Man: But this is a CPU and I wanted the floating point coprocessor.Customer Service Agent: Sir, but this part is within 0.5% tolerance Sir.Man: But this is a CPU and I wanted the floating point coprocessor.Customer Service Agent: If you want something different, I can take a new order for you right now, Sir. And let me tell you about our special promotion, that is, if you don’t mind a slightly bigger tolerance, we have some 80186 in stock and a two for the price of one. This 80186 is just 0.1% off your specs....(Sound of window breaking)(Sound of man running towards a window)(Sound of man and sidewalk crashing into each other in an attempt to occupy the same space.)

author: Mr Pig
author_rank: Contributor
timestamp: October 25, 2013, 06:03:10 pm
content: Quote from: alm on October 17, 2013, 05:35:18 pm:0)QuoteIf you're talking about genuine items, either they make them and sell illegitimately without the usual mark-ups or they are back-door quality-control rejects. Well that's two possibilities but the bottom line is that it's hard for most people to comprehend just how corrupt China is.