hybridfree/eevblog-posts huggingface dataset:
Parrot uses Amazon's Alexa to order treats for itself - - Page 1
Forum section: electronics / general

author: cdev
author_rank: Super Contributor
timestamp: December 22, 2018, 01:02:00 am
content: Its surprising to me that we haven't seen more stories like this. Parrots are extremely intelligent and learn new skills quickly.https://www.tampabay.com/bizarre/parrot-uses-amazons-alexa-to-order-treats-for-itself-20181218/

author: bitwelder
author_rank: Super Contributor
timestamp: December 22, 2018, 01:57:52 pm
content: Perhaps most parrots are smart enough not to get ever caught

author: Domagoj T
author_rank: Frequent Contributor
timestamp: December 22, 2018, 05:48:25 pm
content: So, the owner says they need to check orders every day when they come home from work.I'd disable the Alexa feature as soon as I realized what was going on, or chuck the damned thing (Alexa, not the parrot) in the bin.Fake news or the owner is a bit dense.

author: james_s
author_rank: Super Contributor
timestamp: December 22, 2018, 07:01:56 pm
content: We have one of those echo things, it's handy as a kitchen timer and music player but no way in hell I would ever enable the ordering function. It only takes one smartass friend to end up with pallets of crap showing up on the porch.
Wireless Temperature/Humidity Sensors - Page 1
Forum section: electronics / general

author: Halcyon
author_rank: Unknown
timestamp: December 21, 2018, 02:02:37 am
content: I've been looking atthesesensors from Ali Express. They basically talk to an MQTT server to measure temperature and humidity.I'm always a bit dubious buying overly cheap gear from China, particularly because I don't know exactly what the code is doing.Can anyone see any issues with these kinds of devices or can you make recommendations? I was looking at getting a handful of these sensors and using Domoticz to do the logging/graphing.
LTE CAT-M1 supported by all 4G providers? - Page 1
Forum section: electronics / general

author: Tantalum
author_rank: Regular Contributor
timestamp: December 20, 2018, 04:19:47 pm
content: HelloI needed a 4G LTE modem that I wanted to use with a NanoPi Neo.Since I only need it for sending/receiving SMS and check emails, I don't need a LTE module with high speed connectivity.(I know a GSM/GPRS module @ 8$ would be fine, but they have a too high consumption and RF emission)There are some not too expensive modules on ebay that use a SIM7000E modem.http://simcomm2m.com/En/module/detail.aspx?id=168It is compatible with GSM/GPRS and LTECAT-M1(eMTC) and NB-IoT.Now, my questions.Is the LTE CAT-M1 supported by all 4G providers (Europe) or does it need a specific implementation/equipment by the providers?Do I need a specific M2M subscription???Thanks

author: ChristopherN
author_rank: Unknown
timestamp: December 20, 2018, 06:47:22 pm
content: Hi Tantalum,NB-IoT and M1 networks are currently in testing phases around Europe. Certain cities will have coverage, but you will need a special contract to use any of those networks. Those contracts are only given to industry customers in most cases and require a lot of paperwork as well as minimum orders in the 100s to 1000s SIMs. You could try your luck and contact M2M / B2B sales of your local provider and ask for a free card or an evaluation pack.Full rollout across will take time. Please also note that the current roaming contracts don't include M1 and NB-IoT as of now, so you won't be able to use the card in any other than your home network.BRChristopher

author: Tantalum
author_rank: Regular Contributor
timestamp: December 20, 2018, 07:24:14 pm
content: Thank you for your answer!

author: ChristopherN
author_rank: Unknown
timestamp: December 20, 2018, 08:26:24 pm
content: And PTCRB in the States. Luckily there is no such thing in Europe.
Miyagi say: Frux-on Frux-off - Page 1
Forum section: electronics / general

author: Axel2801
author_rank: Newbie
timestamp: December 20, 2018, 10:13:21 am
content: The question is-- is there anything that will take the flux off without dulling the surface at the same time? I know there's commercial-stuff that comes in a can, but I don't think I solder enough to make the purchase... And besides-- I'm suspicious that the stuff-in-a-can would also dull my boards.What I'm using-- Kester "44" Rosin Core Solder, a green pcb board with ground-plane and all (seems like a pretty decent quality board,) and drug-store grade 70% isopropyl rubbing alcohol.And Need guidance, thank youAxel2801

author: ataradov
author_rank: Super Contributor
timestamp: December 20, 2018, 06:29:25 pm
content: Alcohol should work. It sometimes leaves white-ish residue, but that's only because of insufficient cleaning or your alcohol is not clean anymore. You need to use multiple baths/cleanings with different level of contamination.Show some pictures of your "dull" boards.

author: Ian.M
author_rank: Super Contributor
timestamp: December 20, 2018, 07:43:50 pm
content: Also, for diagnosis, try cleaning a new board that has never been soldered, as-if you were trying to remove flux from it. Same IPA, same brush or wipes etc. If the result is a dull board, and using a brand new brush and fresh packet of wipes doesn't fix it, you know its not a flux removal problem!

author: GreyWoolfe
author_rank: Unknown
timestamp: December 20, 2018, 07:51:35 pm
content: I use 91 and 99.95% IPA and I have squeeze bottles for them so I am not double dipping a dirty toothbrush into the IPA. I wet lint free nail wipes with the IPA and apply a scrubbing action to the wipe with a firm bristle toothbrush. No real residue that way. Sometimes the flux takes a lot of work to remove. Apply IPA, scrub, rinse and repeat until clean, no sticky and no residue.I recently replaced the battery and recapped my HP 3478A meter. Flux to help remove components and extra flux for soldering. I spent a goodly amount of time cleaning the PCB off. End result was a nice clean board that looked like it wasn't touched.Axel, I use the same solder and I also use MG Chemicals 835 rosin flux. Like Louis Rossman says, there is no such thing as too much flux. However, the more flux you use, the more work it takes to get rid of the mess.
Embedded Architecture & Software Engineering courses/training - Page 1
Forum section: electronics / general

author: JVR
author_rank: Regular Contributor
timestamp: December 20, 2018, 12:26:30 pm
content: So I've been doing Arch at my previous employer by just leveraging what I had learnt from experience, same with Software Engineering. Never really got any real training, just learning from other people's mistakes, and seeing how things should not be done.Are there any online courses available (Not too phased about budget) that teach both these subjects? I can find plenty of stuff on Solution and Enterprise Arch, and some Software Arch, but not a lot of that knowledge is applicable to the constraints of an embedded system.The same goes for Software Engineering, I need some material to strengthen my knowledge of the process and pitfalls of software, how to do it properly, and how to get it implemented with as little pushback as possible.I realize this is a broad question, so please discuss and link to anything and everything you think is in this realm. Recent books will also be great for self-study.
what's the worst that can happen if you feed a 555 timer too low of a voltage? - Page 1
Forum section: electronics / general

author: engineheat
author_rank: Frequent Contributor
timestamp: December 20, 2018, 12:23:59 am
content: I want to use a low power CMOS 555 timer to do PWM to slow down a DC motor. My power source is only 1.5V AA so that's less than the recommended Vcc of the 555, which is 2V minimum. This also result in a voltage to the motor less than the rate voltage.I wonder if there are any dangers to powering the 555 and in turn the motor at a lower voltage than recommended? What's the worst that can happen aside from things not doing anything or performing poorly?Thanks

author: cncjerry
author_rank: Unknown
timestamp: December 20, 2018, 12:32:54 am
content: I don't think the 555 will even oscillate at that voltage. Breadboard it and check it out. There might be a 3.3V version but I don't think that will run at that voltage either. To answer your question, it will be like turning it off. A motor that is designed to run at a certain voltage will depending on the motor, draw more current for a given HP and turn more slowly at a lower voltage.

author: tsman
author_rank: Frequent Contributor
timestamp: December 20, 2018, 01:59:41 am
content: TLC551will run down to 1V.

author: Brumby
author_rank: Unknown
timestamp: December 20, 2018, 03:57:40 am
content: Quote from: cncjerry on December 20, 2018, 12:32:54 amThere is also the possibility that the motor will simply stall and not turn at all. In such a state, expect the current draw to rise ... and all the issues that can arise from that.

author: floobydust
author_rank: Super Contributor
timestamp: December 20, 2018, 04:39:49 am
content: What are you using for a PWM switch to drive the motor? I'd guess a BJT. How much motor current?The TLC551 only has 1mA/-0.3mA output current running off 2V and less 0.1mA/-0.01mA on 1V power.The output-stage mosfets don't have much gain at low voltages.

author: Zero999
author_rank: Super Contributor
timestamp: December 20, 2018, 10:19:14 am
content: To answer the original question: what's the worst that can happen if you feed a 555 timer too lower voltage?Smoke! If the voltage drops below 0V, too far into negative territory, it'll smoke.Of course you're not doing that. If the voltage is under 2V it might work, but there's no guarantee.Another issue is the voltage will drop, as the battery discharges under load, so your circuit should work down to around 0.8V, to extract most of the energy from the battery.It's possible to make a PWM circuit, which will work at these low voltages. A Schmitt trigger and comparator would do the job and suitable ICs are available which will work down to near 0.8V. The only trouble is they're surface mount.Here's a schematic. I've not selected the component values, which will depend on the desired frequency and what's available. It will also need a couple of transistors to drive the motor, which will depend on how much power it uses.http://www.ti.com/lit/ds/symlink/sn74auc1g14.pdfhttps://docs-emea.rs-online.com/webdocs/1396/0900766b81396eb3.pdfhttp://www.ti.com/lit/ds/symlink/tlv3691.pdf
Engineers produce smallest 3-D transistor yet, 2.5nm. - Page 1
Forum section: electronics / general

author: BrianHG
author_rank: Super Contributor
timestamp: December 19, 2018, 07:57:14 am
content: There still some life left to Moore's law, so long as it doesn't take a decade to to get this new 2.5nm tech mainstream:http://news.mit.edu/2018/smallest-3-d-transistor-1207I wonder what voltage these devices will run at...

author: Cyberdragon
author_rank: Super Contributor
timestamp: December 19, 2018, 04:17:01 pm
content: Provided it doesn't go the way of the memristor...
Working with glass tubes. - Page 1
Forum section: electronics / general

author: tpowell1830
author_rank: Frequent Contributor
timestamp: December 17, 2018, 12:38:35 am
content: I have watched a few videos from this person, who does some vintage repairs and works as a glass craftsman on projects. This is a video making a glass electronic tube from start to finish. It is a bit long, but I was fascinated.I had the honor of working with a glass craftsman like this a few times in the '90s and this is no less exceptional, IMO.Enjoy...

author: Andy Watson
author_rank: Super Contributor
timestamp: December 17, 2018, 01:06:33 am
content: Ah, glasslinger a.k.a. Ron Soyland - I recognise the latheI'm a fan of his videos.Another interesting tube maker to seek out is Claude Paillard , F2FO. He made a batch of triode valves as a centinary celebration of the invention/discovery of the triode. He attempted to use as near as practicle the contemporary technology - this included making most of the "technology".

author: beanflying
author_rank: Super Contributor
timestamp: December 17, 2018, 01:20:24 am
content: Something about glassI saw this Nixie Tube one a while back.https://youtu.be/wxL4ElboiuA

author: tpowell1830
author_rank: Frequent Contributor
timestamp: December 17, 2018, 01:22:37 am
content: Quote from: Andy Watson on December 17, 2018, 01:06:33 amYes, the vintage electronics part is interesting, but I find working with glass fascinating, having tried it myself (unsuccessfully, I might add). Those little movements with the torch are so critical on timing; just a few milliseconds too long and you have a disaster, just a few mseconds too short and you have a non-stick. This skill is both art and experience when it comes to successfully handling glass like that.

author: cdev
author_rank: Super Contributor
timestamp: December 17, 2018, 02:01:09 am
content: It's a super-cool fluid

author: basinstreetdesign
author_rank: Frequent Contributor
timestamp: December 17, 2018, 02:06:12 am
content: Yes, IMHO these people that do this are true artisans who happen to make cool useful items that can work their special brand of magic as components in the machines that are near and dear to my heart. And they do it with techniques that can be truly dangerous if handled inexpertly. I could not imagine attempting glass forming myself. My hats off to them.

author: coppercone2
author_rank: Super Contributor
timestamp: December 17, 2018, 06:29:08 am
content: i want to do this

author: TerraHertz
author_rank: Super Contributor
timestamp: December 19, 2018, 09:43:47 am
content: Quote from: coppercone2 on December 17, 2018, 06:29:08 amI know, right? Seeing glassblowing skill makes me so jealous.Many years ago I was offered a ginormous glass lathe and a bunch of glassblowing gear. But I had nowhere to set up or even store the lathe, so declined. Still don't have any spare space to set up for glassblowing. This makes me sad.But I have seriously too many projects anyway.
Interesting new video from FEDEVEL on being burned by fake chips - Page 1
Forum section: electronics / general

author: HwAoRrDk
author_rank: Super Contributor
timestamp: December 19, 2018, 06:39:00 pm
content: I came across this new video from Robert Feranec at FEDEVEL about his experiences with fake chips.To summarise: a batch of dev boards was being tested by the assembler and all were failing. He investigated and found that all four voltage rails had main input voltage on them, which had killed practically all the other components on the board. The assembler remarked that the some of the four chips that formed the different power supply circuits looked slightly different to the usual. Upon closer examination of the bad chips, they did not measure as one would expect to, and crucially had two pins commoned together that shorted the input voltage straight to the output.According to a remark by Robert in the YouTube comments, these chips were bought from an authorised reseller. Crazy!I would bet that they are just a straight-up empty package, with no silicon inside, just a leadframe. Although, he only showed measurements of four of the eight pins, so maybe not.

author: coppercone2
author_rank: Super Contributor
timestamp: December 20, 2018, 12:19:31 am
content: what retailer?

author: HwAoRrDk
author_rank: Super Contributor
timestamp: December 20, 2018, 12:29:42 am
content: Dunno, he didn't say.
bin from timaru wants a book of magic trucks and a bug screen tv. - Page 1
Forum section: electronics / general

author: mrpackethead
author_rank: Super Contributor
timestamp: December 18, 2018, 06:58:53 am
content: This.. is why no body understands us Kiwis.https://youtu.be/M3Q_3a7HfA0

author: CJay
author_rank: Super Contributor
timestamp: December 18, 2018, 09:38:55 am
content: Nah, we do, we just don't pay attention.

author: noidea
author_rank: Unknown
timestamp: December 18, 2018, 02:22:57 pm
content: I remember a kiwi guy used to work for my father years ago, he was always going about his chully bun with a sux puck of punthers puss in it

author: Wan Huang Luo
author_rank: Regular Contributor
timestamp: December 18, 2018, 05:14:48 pm
content: One of the rare pleasures in life is catching Mailbag segments where a Kiwi sends a package to Dave, and Dave says "BAAA"
This explains my search results, How Scammers in China Manipulate Amazon. - Page 1
Forum section: electronics / general

author: BrianHG
author_rank: Super Contributor
timestamp: December 18, 2018, 04:56:09 am
content: Enjoy:

author: Bud
author_rank: Super Contributor
timestamp: December 18, 2018, 05:37:35 am
content: "Only a small number of Amazon users are doing that" - really? fake reviews are everywhere on Amazon and are more of a rule rather than exception.

author: ataradov
author_rank: Super Contributor
timestamp: December 18, 2018, 05:59:27 am
content: Sure, let's single out China, it is so trendy now. Sellers from all over the world do this. Sure, in absolute numbers Chinese sellers are dominant. What can they do? China manufactures the product, obviously there will be more sellers there.Amazon reviews are mostly useless. The only ones I pay attention to are the ones that include pictures of the broken or defective product and even then only to confirm my suspicions that it will break that way.

author: Rick Law
author_rank: Super Contributor
timestamp: December 18, 2018, 02:34:28 pm
content: This is one of the problem of a big monopoly. You just manipulate one and you've done it world wide. This really doesn't serve the customers nor the sellers.Personally, I think Facebook, Tweeter, Amazon, and Google/youtube should all be broken up. Given their political donation budget whichappears to meas unlimited, and their close relationships with a particular (USA) political party1, I doubt that would happen any time soon in the USA.References:According to this September 2018ZeroHedge Magazinearticle titled:Google Was "Working To Get Hillary Clinton Elected" With "Silent Donation" According To Leaked Internal Emailhttps://www.zerohedge.com/news/2018-09-10/google-was-working-get-hillary-clinton-elected-silent-donation-according-leakedAccording to this March 2015Fortune Magazinearticle titled:Google averages a meeting with the White House every weekhttp://fortune.com/2015/03/25/google-white-house/

author: Rick Law
author_rank: Super Contributor
timestamp: December 18, 2018, 03:01:57 pm
content: Quote from: blueskull on December 18, 2018, 02:38:35 pmMore like "serving my pocket book" or "serving my constituency"... Bad part is, the constituency seem less and less important to them except a few weeks before reelection, and even then it is just mostly lip-service.I judge a politician by the growth of their net-worth. Most have their net worth growing in rates that us mortals can only dream of, and that spoke loudly about their loyalty.
Certification required for commercial/industrial electronic product in India ? - Page 1
Forum section: electronics / general

author: sangar
author_rank: Regular Contributor
timestamp: December 07, 2018, 06:24:10 am
content: Hi All,I am from India...Assume, I have an Industrial/commercial end electronic product which is designed in India and it targets the Indian market...To sell it in India, what are all the certifications that I need to get from Indian gov organisation...Thanks,Muthu

author: BravoV
author_rank: Super Contributor
timestamp: December 07, 2018, 06:30:12 am
content: Quote from: sangar on December 07, 2018, 06:24:10 amYour flag says you're from India and presumably you are native Indian, so ? ....

author: krish2487
author_rank: Frequent Contributor
timestamp: December 07, 2018, 01:51:46 pm
content: Its too vague a requirement to speculate, much less help dude..What is the end purpose of the device?? who is likely to use it?? Where is it likely to be used??These questions should give a reasonable idea of what certifying organizations you need to look at.And what are you trying to certify?? the product itself?? the performance of the product?? the reliability?? the processes you follow to make the product?? The standards (electrical/ mechanical/ environmental ) to which the product conforms??As you can see, each of them have a distinctly different answer and that should provide a decent starting point for you to do some research yourself.Quote from: sangar onYesterdayat 05:24:10 pm

author: Par3689
author_rank: Contributor
timestamp: December 18, 2018, 10:04:44 am
content: Refer to following linkhttp://meity.gov.in/esdm/standardsIf you can give more information about the product and customer base...Sent from my ONEPLUS A6000 using Tapatalk
IEC C13 lead with clamp meter loop. - Page 1
Forum section: electronics / general

author: MrSquirrel
author_rank: Contributor
timestamp: January 04, 2014, 11:18:27 pm
content: Hi there,Random request - Does anyone know where you can get a standard IEC C13 to UK 13a plug with a moulded in current sense loop?I remember stumbling across them by accident and thinking i must get some but i've lost the supplier's details and can't find them again despite a lot of searching.They had a standard (1.0mm squared or similar) 3 core flex between the two connectors, but along the length of the cable the live conductor was broken out in a little loop so you could get a clamp meter around it. The loop was covered in plastic injection moulded onto the cable making it robust and perfectly safe. It looked like a moulded "lump" on the cable with a little ear for your clamp meter to hang on.This is to allow unskilled people to take current measurements of IT equipment in perfect safety. Yes i know you get PDU's that will perform current measurement on each outlet, but they are ridiculously expensive for what they do.Failing that i was looking at a Megger MMC850 clamp meter which will measure current on a multicore cable. Don't know how well they perform though. Has anyone used one? They are relativley cheap at £160 or so.Thanks,

author: Unknown
author_rank: Unknown
timestamp: January 04, 2014, 11:34:47 pm
content: How many are you after?

author: MrSquirrel
author_rank: Contributor
timestamp: January 04, 2014, 11:44:37 pm
content: At a guess, 80 initally - i'll have to have a count up next week.They only really need to be 0.5m in length and 0.75mm squared flex would be fine.

author: Unknown
author_rank: Unknown
timestamp: January 04, 2014, 11:59:51 pm
content: I could make 80 of them if you can't find them again, or a slight variation thereof.

author: TheNewLab
author_rank: Frequent Contributor
timestamp: December 18, 2018, 09:42:13 am
content: So you mean a line splitter like this?1pc DE-10ALS AC Line Splitter Dual Range x1 x10 15A AC250 for Australia Chinahttps://www.ebay.com/itm/1pc-DE-10ALS-AC-Line-Splitter-Dual-Range-x1-x10-15A-AC250-for-Australia-China/131035600153?hash=item1e82549519:g:Z1QAAOxywXFScoMD:rk:18:pf:0single ones $10 to $15. quantity like 80 less than a US dollar each..buy quantity on AliBaba...
Help needed to source banana jack - Page 1
Forum section: electronics / general

author: eecook
author_rank: Regular Contributor
timestamp: December 13, 2018, 04:13:28 pm
content: Hi All,I have been browsing for the past hour trying to source a supplier that has square panel mount banana jacks like the one in the image below.Can anybody give me a hand with this?Thanks,Simon.

author: tooki
author_rank: Super Contributor
timestamp: December 14, 2018, 03:47:49 pm
content: I strongly suspect it’s a custom part. I’ve never seen such a thing from any of the manufacturers I’ve looked at.

author: t1d
author_rank: Super Contributor
timestamp: December 14, 2018, 04:24:25 pm
content: Well, do you need this exact part, with all its wires, or do you just need the square mount function?If the square mount function... Remove the jack from the case. Look at the track it sits in, carved into the case. I rather imagine that it will be an elongated "U." If so, this type may drop right in. Add a drop of silicone, to help keep it from sliding upward in the slot. You might have to add some type of box to isolate the naked end of the plug.https://www.ebay.com/itm/10x-4mm-Banana-Panel-Socket-Test-Probe-Binding-Post-Nut-Plug-Jack-Connector-M320/401348925415?hash=item5d724297e7:g:o4IAAOSwZQxW6CXH:rk:36:pf:0If the multiple wire functions... The single signal may be split to various locations, from the single connection point, on the jack.Tell us what you are trying to achieve and why. What piece of equipment is it on? What functions does the jack perform? Are you certain this is a banana jack? Banana jacks typically only handle a single signal going in a single direction. This jack looks like more than that is going on.

author: eecook
author_rank: Regular Contributor
timestamp: December 14, 2018, 09:06:58 pm
content: Thank you guys!

author: station240
author_rank: Unknown
timestamp: December 17, 2018, 05:44:07 pm
content: Closest I've seen is this, I've got some here actually.https://www.aliexpress.com/item/4-mm-secure-banana-plug-socket-R1-24-terminal-instruments-multimeter-12-mm-socket/32804336826.htmlOnly difference to your version is the nut instead of the square plastic.A washer or silicon could be used to secure it.
Off Topic (yea I know!) Musician... - Page 1
Forum section: electronics / general

author: GlennSprigg
author_rank: Super Contributor
timestamp: December 16, 2018, 01:58:01 pm
content: I'm a guitarist, and amongst 1000 other tracks/songs/tunes, I found this the other day!Willie Nelson has a few sons, and in this beautiful rendition below his son Lucas Nelson, wassinging a tribute with/for his dad. (Blue Eyes Crying In The Rain)...WOW !!! Sounds just like Willie !!!!!!!!https://youtu.be/0DuYBYHt7nc

author: Electro Detective
author_rank: Super Contributor
timestamp: December 17, 2018, 03:20:06 am
content: He's definitely got the goods on this tune, and Dad Willie is performing well for a bloke in his 80s who's been around the circuit more than a few times
PACE TJ-70 nozzle size? - Page 1
Forum section: electronics / general

author: GastonDeVille
author_rank: Newbie
timestamp: December 13, 2018, 12:13:53 am
content: Hello out there!Does any of you have a PACE TJ-70 handpiece or nozzles?I would like to know because I'm going to make my own nozzlesand like to know what size the nozzles have where they connectto the "handpiece" or heater element.Now you may wonder why I just check with my TJ-70, but it is justbecause I'm not going to get it until a couple of weeks, maybe nextyear so I wanted to have some nozzles ready for action when it arrives.The only thing I have for now is pictures.The tool itself with attached nozzleOther type of nozzle

author: GastonDeVille
author_rank: Newbie
timestamp: December 14, 2018, 05:14:00 pm
content: Really? Any living person who has a clue about this?

author: GLouie
author_rank: Regular Contributor
timestamp: December 16, 2018, 03:12:43 am
content: I have one, and have just seen your request.The diameter of the insert section is 7.90mmInsert section length is 8mm to shoulderInsert section is internally bored;-internal bore has wall thickness of about 0.42 mm-internal bore has a depth of about 3.87mm at the radius and about 4.8mm at the center.I seldom use mine, as I just don't do much work requiring it. It is no substitute for a big hot air system for large chips.

author: GastonDeVille
author_rank: Newbie
timestamp: December 16, 2018, 05:21:16 am
content: Lots and lots of thanks!I managed to make a simple model in Fusion360Just don't know how to get the picture in to the message properlyJust one more thing.. or two. I would like to know the size of the small nozzle / bore hole that protrudes the "big shoulder" and also the outer size of shoulder?Now I just made guess that looked ok.

author: GLouie
author_rank: Regular Contributor
timestamp: December 16, 2018, 06:15:43 am
content: The nozzle bore hole seems to be non-metric U.S. size 1/16 inch, about 1.57mm.The nozzle-tube is likely stainless, and measures about 1.82mm outer diameter (OD). It is likely also non-metric size, and looks to have a flange built in to it. I would find out what sizes of tubing are available to you and simply make the appropriate hole for the interference fit. It ends a few mm from the end of the interior hole (hard to see in the photo).The shoulder diameter is about 12.7mm, probably made to the US size of 1/2 inch. It doesn't look very critical.

author: GastonDeVille
author_rank: Newbie
timestamp: December 16, 2018, 10:12:49 pm
content: That is even more perfect!Now I really have a good understanding of how to put it together.The plan is to turn it on a lathe from brass with the nozzle brazed on, (correct term?) not as hard as stainless but should survive some hot air.If i have success with the making of a complete nozzle I will of course share the CAD-files.

author: GLouie
author_rank: Regular Contributor
timestamp: December 17, 2018, 02:22:29 am
content: My guess is that the nozzle is not brazed, just a tight press fit (interference fit).
Creative with vehicles: Dutch style - Page 1
Forum section: electronics / general

author: nctnico
author_rank: Super Contributor
timestamp: December 14, 2018, 10:43:56 pm
content: My youngest son pointed me towards this Youtube channel (Mastermilo82):https://www.youtube.com/channel/UC3eSiX_rjJk2jg5EJSBcqBwThis guy builds all kind of weird vehicles (usually based on cars) but also shows the engineering & building process behind it. I had a few good laughs. The Youtube subtitles seem to work as well.

author: coppercone2
author_rank: Super Contributor
timestamp: December 15, 2018, 04:56:54 am
content: its like colin without the crack
Are Australian Scientists Inventing Aldous Huxley's 'Feelies'?  - Page 1
Forum section: electronics / general

author: cdev
author_rank: Super Contributor
timestamp: December 14, 2018, 06:56:39 pm
content: How Do You Feel What You Can't Touch? Scientists Crack the Nerve CodeSydney Morning Herald/Liam Mannix (Dec 12)This is a major discovery. It will help people who have lost their limbs, and nerve function restore function via prosthetic limbs. It may make it possible to replay things people feel.Will "The Matrix" be far behind? (Just kidding)Quote

author: MrW0lf
author_rank: Frequent Contributor
timestamp: December 14, 2018, 07:14:39 pm
content: Typical... for what scientists need AI random ham operator would probably solved in one weekend & 6 pack later... Imagine, pulse timing contains info!

author: coppercone2
author_rank: Super Contributor
timestamp: December 14, 2018, 08:52:00 pm
content: is this the same discovery as deus ex human revolution?
HSC - Page 1
Forum section: electronics / general

author: Maxwell-X
author_rank: Newbie
timestamp: December 19, 2018, 11:05:54 pm
content: If you could do the HSC in NSW Australia, what subjects would you pick ?

author: Halcyon
author_rank: Unknown
timestamp: December 20, 2018, 02:26:32 am
content: I would choose what interests you personally. Your decisions now don't have a great impact on future university or career. Even if you leave with a school certificate (as opposed to your higher school certificate), it doesn't exclude you from tertiary education or high paying jobs. Of course if you do well on your HSC and get good marks and are looking to go to University straight away, it may assist you.There is an old saying "P's (passes) get degrees". Don't choose a subject where you will struggle, pick the easy ones where you know you'll do well. At the end of the day, its a bit of paper with a number on it. Once you get your first graduate certificate from TAFE or University, your HSC becomes irrelevant.EDIT: I will also add that early professional experience (even if it's just free work experience) speaks volumes more than a bit of paper from a school or university. I have never been disadvantaged for not having my HSC nor have I ever regretted not completing it. My advice is get into the workforce early and start gaining knowledge and experience you can't get from a University course.Recencyandrelevanceare highly scrutinised out there.

author: Whales
author_rank: Super Contributor
timestamp: December 20, 2018, 02:40:55 am
content: +1 for choosing what's fun.My experience in Sydney: Elec eng uni courses are tailored for students from a wide variety of international education systems. The first year teaches you anything you missed. Knowing a little calculus before hand is useful. I suspect most undergrad uni courses in Aus will be like this.Useful primary and secondary info sources: Find who's teaching the HSC subjects, see if they're teachers you think you might be compat with. Download the course dotpoints from the board of studies, have a read of them and see what the assessments are like.Find the fun stuff, avoid the teachers you know you will have troubles with. If people recommend you a course (or tell you that you 'have' to do it) based off just the name/area of the subject then ignore them with prejudice, they think choosing an HSC subject is like shopping at the supermarket.You are the only one sitting the next 2 years of HSC, not your parents. If they demand you do a certain subject then ask when they plan to sit the assessments.I really enjoyed chem, but that was also down to a great teacher who loved her stuff. I didn't do well at all in 2-unit maths, and I still want to blame the classroom having an unvented gas heater and the windows always closed (), but otherwise I've been fine doing elec eng at uni. Never did physics, again not a problem, everything covered in the uni course.I only wish I could have done more HSC courses. And perhaps drop English
One of those days - Page 1
Forum section: electronics / general

author: AngraMelo
author_rank: Regular Contributor
timestamp: December 14, 2018, 12:53:20 pm
content: Last night was one of "those".Out of freaking nowhere, the beefy PS I built to power my ham rig went nuts for 10secs. It blew the fuse on my IC-706mkiig and either fried something inside the radio or fried my SWR meter (or both). I opened the PS up and everything looked ok and it works fine now. (WTF?)The other PS I have started to act up on me and is shutting off for no apparent reason. (probably heat but it never did that before)My brand new electronic load blew up and now has a mystery defect. It blows up every mosfet you throw at it. Every other component seems fine but it now just hates the mosfets.The boost converter I just received is less efficient then the government and it is now a paperweight given that the seller didnt advertise that (he said 85%, more like 60%) so to get any real power at 120V you would easily go over the max input current specs. So yeah, paperweight.That all happened in a spawn of 2 hours.I dont even know where to start.Not writing this for anyone to feel sorry it was just so insane, so many different things going bad at the same time for no apparent reason.

author: InductorbackEMF
author_rank: Regular Contributor
timestamp: December 14, 2018, 05:23:00 pm
content: I feel you friend.I just blew ALL capacitors on a hp Hertz counter killed the supply and the cable to the motherboard has 4 pins missing.On top of all this to even get to the boards i had to remove the frame and power supply.And the best part was it was fully working mere seconds before but due to me wanting to recap it i somehow forgot to put the MAIN filter caps back...Alex.

author: AngraMelo
author_rank: Regular Contributor
timestamp: December 15, 2018, 05:55:33 am
content: Oh Alex; I'm sorry to hear that.There are some days that things just go completely sideways. It freaking sucks. I'm sure you will get that thing up and running in no time!! The DC load I blew up is now officially allergic to Mosfets. The freaking thing has 4 ICs and I can't figure out what is going on.I'm going four-channel-probbing on this sob as soon as I get some time.Sent from my SM-G950F using Tapatalk
You never know who is reading IEEE Spectrum... - Page 1
Forum section: electronics / general

author: Beamin
author_rank: Super Contributor
timestamp: December 14, 2018, 03:29:38 pm
content: Back in the 2000's I met this sweet southern girl in north Carolina. My father and I had moved to that state because of the nice weather hundreds of miles away from our last home thousands of miles away from family. Just saw a house we liked with lots of golf courses and moved there. I brought my girl friend I just met who was an NC native, over the house for the first time and I introduced my father to her. We had only been in this state for about two weeks. She says "I know who you are I had to write a report in AP science class in high school on an article you wrote." I thought she was just fucking with me, she was fun like that. So my dad went to the book shelf pulled off a lone copy of IEEE spectrum blew the dust off the most boring magazine in the whole world and handed it to her and she showed me the article. Of all the people she could have picked to do her project she by chance did one on my father and remembered what his face looked like from the article. I still don't believe it. She was an ESL psychology major and have no idea why she was reading IEEE unless she was studding people with Asperger's. We then went up stairs and had the most amazing... talk about how boring IEEE was.
Just an Christmas tree (on screen) - Page 1
Forum section: electronics / general

author: Miyuki
author_rank: Frequent Contributor
timestamp: December 13, 2018, 08:20:35 pm
content: Just want to share how nice pattern is growing on my laptop screenStart in summer and growing little pixel by pixel since thenInteresting how it is not from edge and have no visible damage

author: Zucca
author_rank: Unknown
timestamp: December 13, 2018, 09:24:16 pm
content: Laptop details, like brand and variant?

author: Red Squirrel
author_rank: Super Contributor
timestamp: December 13, 2018, 09:33:57 pm
content: I used to work at a help desk.Have you tried rebooting your computer and DSL modem?On serious note it is interesting how it's all together. There must be a defect in that general part of the LCD panel. Maybe something putting lot of pressure on it.

author: Miyuki
author_rank: Frequent Contributor
timestamp: December 13, 2018, 09:39:25 pm
content: Quote from: zucca on December 13, 2018, 09:24:16 pmIt is my old beaten Lenovo W520, carry it around house and garden, use for car diagnostics and sometimes get some hitPretty durable for misuse it get//and as it is glossy display I will be happy to change it for mate one
Will someone who can read chinese please explain these characters ? - Page 1
Forum section: electronics / general

author: Kjelt
author_rank: Super Contributor
timestamp: December 13, 2018, 09:07:52 pm
content: Hi I would really appreciate if someone who can read chinese explain to me the difference between these two last chinese characters.Both claim to be Leadshine brand products but one is from Leisai.com and the other from Leisai.net which seems to sell fakes but I am not 100% sure about thisSo if anyone can tell me what the difference is or has more information about this, thanks a lot in advance.

author: Kjelt
author_rank: Super Contributor
timestamp: December 13, 2018, 09:38:25 pm
content: I found the second one myself : Lei Sai Technology.But the first one is Lei SaiI just can not find it.

author: Kjelt
author_rank: Super Contributor
timestamp: December 13, 2018, 10:55:06 pm
content: Thank you Blueskull much appreciated.Do you perhaps know if these are two different companies?

author: Kjelt
author_rank: Super Contributor
timestamp: December 14, 2018, 08:48:42 am
content: Ok thanksThey both sell the same productnumbers but inside they are more or less different.One all markings are removed, the other still has them. Pcbs seem to match but could also be copied.The only big difference is the pinout of the encoder connector, although they look identical except for the colour they can not be used interchangeable.The motors with the same typenr are very different.
Buying a RF Vector Impedance  Antenna Analyzer - Avoid this shop - Page 1
Forum section: electronics / general

author: southernspace
author_rank: Newbie
timestamp: December 13, 2018, 03:36:51 pm
content: I was interested in buying an N1201SA RF Vector Impedance Antenna Analyzer.So I found a shop on Aliexpress which was offering the device for a good price including DHL shipping.In total it cost US $193.And then I waited for the seller to ship it. He sent me a 'DHL Tracking Number" which was clearly nothing but a waybill number.He never shipped the product. The more I messaged the more he promised until he sent me a message saying that it was returned - From where I am not sure.He then suggested I should open a dispute and claim $13.93 BackHe has refused to give a refund unless I say it was my fault and has forced me to wait until Aliexpress get involved and settle the matter.So dont buy from this shop unless you want to waste a lot of time:Store: Ci Mi Homes Improvement StoreStore: No.2987012

author: BravoV
author_rank: Super Contributor
timestamp: December 13, 2018, 04:05:20 pm
content: Remember read it somewhere here, that Franky (iloveelectronics), a well known seller here in this forum, complained that shipping packages from hongkong to south africa bounced back, and eventually he stops selling to your country.

author: SeanB
author_rank: Super Contributor
timestamp: December 13, 2018, 07:32:10 pm
content: Yes, SAPO does take forever, and does deliver whatever they don't take, and you generally have to wait 6 months for it. However DHL and other couriers ( so long as they do not use the broken SAPO local leg) are pretty fast, though you will pay for the service.Waybill number should be trackable on DHL website though, so if it was never tracked then either he did not send it, or used an expired waybill number instead, or just made one up.With SAPO that R25.85 per parcel is annoying, they should have just said R26, and not have had to worry about the 15c change every time I go to stand in the line at Durmain to get a parcel. Tuesday it was a nice 2 hour line, got a chair to assist the nice Gogo ahead of me, as with crutches she really needed a rest. She sat, and her son stood there to get to the counter for the SASSA payout.

author: southernspace
author_rank: Newbie
timestamp: December 14, 2018, 10:39:16 am
content: This guy never sent the parcel. When using DHL it shows on their system and would only bounce back if you give the wrong details
Supreme Skills Miracle Topsm ultimate spinning top contest in Japan. - Page 1
Forum section: electronics / general

author: BrianHG
author_rank: Super Contributor
timestamp: December 18, 2018, 08:55:56 am
content: NHK series Supreme Skills. (Sort of like Junkyard wars, but space grade quality...)>>>Vote before watching!!!<<<Who will win, the space engineers (Team SpaceSpin), or, the machine shop specialist (Master Craftsmen)?How many minutes will the tops spin for when spun at the same speed a human hand can turn it?

author: BrianHG
author_rank: Super Contributor
timestamp: December 18, 2018, 09:02:54 am
content: Man, how can something so small spin for so god damn long!!!They are only 500 grams, and they were spun at 1500rpm...
Aussie making pinball machines in China - Page 1
Forum section: electronics / general

author: austfox
author_rank: Regular Contributor
timestamp: December 13, 2018, 01:43:48 am
content: I just watched this video on an Aussie pinball manufacturer in China:https://youtu.be/bnPhAn2_bjkExtremely interesting, and a couple of interesting things I noted:- It’s not a cost of wages thing in China, but the access to skilled labour and the supply chain- Factory rent is higher than an equivalent site in Australia- Most boards use through-hole components so that the machine’s owner can do their own repairs
Exploring Akihabara, Tokyo's Electronics Markets  - Page 1
Forum section: electronics / general

author: TERRA Operative
author_rank: Super Contributor
timestamp: December 12, 2018, 12:50:07 pm
content: Ha, good thing they didn't show my favourite junk parts shop.My sources for old test equipment and stuff are still 'secret'.

author: Kilrah
author_rank: Unknown
timestamp: December 12, 2018, 01:46:47 pm
content: Pretty cool, I went there a few years ago but only had half a day and unfortunately no knowledgeable people to show me the real nice shops like this so I mostly saw the large mainstream stores that have the same new stuff as we know, the era of Japan having exclusive cool devices seems to be gone.I'd really have wanted to see the retro stuff we never knew about...

author: Wan Huang Luo
author_rank: Regular Contributor
timestamp: December 12, 2018, 03:15:11 pm
content: I totally want a YM2612 music player.

author: olkipukki
author_rank: Frequent Contributor
timestamp: December 12, 2018, 04:57:23 pm
content: Quote from: Kilrah on December 12, 2018, 01:46:47 pmDo you mean these?

author: Kilrah
author_rank: Unknown
timestamp: December 12, 2018, 05:34:07 pm
content: I was thinking more 90's era uncommon form factor laptops, but that was awesome! Gotta love the guy with his clones

author: schmitt trigger
author_rank: Super Contributor
timestamp: December 12, 2018, 06:12:46 pm
content: Quote from: TERRA Operative on December 12, 2018, 12:50:07 pmIndeed!Just like finding the better Shinjuku noodle shops.
IC sample notebook thingy - Page 1
Forum section: electronics / general

author: Alex Eisenhut
author_rank: Super Contributor
timestamp: December 13, 2018, 02:57:29 am
content: I bought some of thesehttps://www.ebay.ca/itm/Empty-Sample-Book-for-SMT-SMD-Resistor-Capacitor-Assortment-Components-20-Page/253506912787?ssPageName=STRK%3AMEBIDX%3AIT&_trksid=p2057872.m2749.l2649Do they make these with bigger/wider channels for ICs? I've tried many keywords on eBay and BangGood and nothing...

author: james_s
author_rank: Super Contributor
timestamp: December 13, 2018, 08:02:22 pm
content: I've seen TTL assortments, but not a book like that. ICs are typically orders of magnitude more expensive than SMT passives. You'd end up paying hundreds of dollars for a bunch of ICs you'll probably never use.