hybridfree/eevblog-posts huggingface dataset:
Sardine Can Electronics - Page 1
Forum section: electronics / general

author: armandine2
author_rank: Frequent Contributor
timestamp: February 07, 2024, 06:34:16 pm
content: Are you someone who is hesitant to discard their emptied and cleaned, ready to recycle, sardine cans ?Is it "electronic" , this affinity ? .. but a search for project ideas is not overly forthcomingwith plans.https://www.instructables.com/Soldering-Iron-Base-made-with-a-sardines-can/

author: soldar
author_rank: Super Contributor
timestamp: February 07, 2024, 07:31:23 pm
content: I used that kind of can to store small parts because they are conveniently stackable and I still have a few piles of them but I have since switched to plastic tubs of spread cheese which are more convenient in several ways. I have many piles of these each one holding little components which i know I will never use but you never know...

author: retiredfeline
author_rank: Frequent Contributor
timestamp: February 07, 2024, 07:34:50 pm
content: Haha, very enterprising of that hacker.But I found that Altoid tins, or rather their generic workalikes, are a thing at the usual online markets, e.g. AliExpress. I must hang on to my Nivea tin when I've used up the contents.

author: armandine2
author_rank: Frequent Contributor
timestamp: February 07, 2024, 09:18:54 pm
content: For me abstractly, the can's size and material and structural properties are crying out to be taken technical advantage of - but for the want of a practical plan.
Power Bank suitable for field use with Rigol DHO 800 series DSO's - Page 1
Forum section: electronics / general

author: Silver_Is_Money
author_rank: Regular Contributor
timestamp: January 05, 2024, 11:30:40 am
content: Any recommendations for a good power bank that meets the requirements for powering the Rigol DHO802?

author: al777
author_rank: Contributor
timestamp: February 11, 2024, 05:23:22 am
content: When I need to completely float my Rigol DHO924S (not very often) - I use the "Essager 65W 15000mAh" power bank, bought during 11.11 sale on AliEx. I did not use it for long sessions, so cannot speak to how long it will run DHO924S on full charge, but as it powers DHO924S (the most hungry model in the series) without issues, it will likely power DHO802 as well. I suspect any 65W USB-C PD power bank will do fine.

author: ebastler
author_rank: Super Contributor
timestamp: February 11, 2024, 07:35:56 am
content: See herehttps://www.eevblog.com/forum/testgear/powerbanks-tested-with-dho800900/and herehttps://www.eevblog.com/forum/testgear/suitable-usb-c-powerbank-for-rigol-dho800900-series/Let's not activate yet another thread on that topic please.
A320 crusing at 37 000 feet, Terrain ahead, pull up! Terrain ahead, pull up! - Page 1
Forum section: electronics / general

author: MrMobodies
author_rank: Super Contributor
timestamp: February 04, 2024, 04:53:11 pm
content: No content showing.Ah sorry now it works. I added a adblock filter to stop videos automatically playing on certain websites which turn into a miniplayer on scroll and follow down the page.

author: PA0PBZ
author_rank: Super Contributor
timestamp: February 04, 2024, 04:54:13 pm
content: Quote from: MrMobodies on February 04, 2024, 04:53:11 pmWorks fine for me.

author: Andy Chee
author_rank: Super Contributor
timestamp: February 04, 2024, 04:54:25 pm
content: I'm surprised something safety critical such as terrain detection, is dependent on GPS. I always thought terrain detection was done by radar.

author: mendip_discovery
author_rank: Super Contributor
timestamp: February 04, 2024, 05:01:15 pm
content: So the FAA have posted this,https://www.faa.gov/other_visit/aviation_industry/airline_operators/airline_safety/safo/all_safos/SAFO24002.pdfQuote

author: bw2341
author_rank: Regular Contributor
timestamp: February 04, 2024, 06:51:43 pm
content: Quote from: Andy Chee on February 04, 2024, 04:54:25 pmIn civil aircraft, I don't think there is any forward looking terrain sensing. The original Ground Proximity Warning System used the regular downward pointing radar altimeter. The enhanced version (EGPWS) used today uses GPS/GNSS and built in terrain maps. This gives much earlier warnings in the case of rising terrain and allows the system to stay on when the aircraft is configured for landing.
18swg wires on the 12VHPWR cable enough? - Page 1
Forum section: electronics / general

author: x_marx
author_rank: Contributor
timestamp: February 07, 2024, 01:00:22 am
content: Hello! I just got a new Thermaltake Tough power pf3 850W power supply. I found out that all the cables bundled is made of 18swg wires. For 12vhpwr which should support power spikes up to 850 or even 1000W, I'm not sure it would be enough. What do you guys think?Afaik, it's 12 pin. 6 wires do +12V and the other 6 is COM.

author: ejeffrey
author_rank: Super Contributor
timestamp: February 07, 2024, 03:56:43 am
content: I believe for 12VHPWR the high current wires need to be awg16. The sense wires can be thinner.The issue is usually the contact resistance where the pin is crimped to the wire. The largest wire size for a given pin is needed to get the lowest contact resistance and the highest per pin current rating.

author: coppercone2
author_rank: Super Contributor
timestamp: February 07, 2024, 04:39:19 am
content: I would go bigger

author: x_marx
author_rank: Contributor
timestamp: February 07, 2024, 06:07:58 am
content: Understood.Would be returning the unit.

author: coppercone2
author_rank: Super Contributor
timestamp: February 07, 2024, 06:33:23 am
content: good idea its not uncommon to read about roasted connectors with shady PSU choices.
what noises are these?  - Page 1
Forum section: electronics / general

author: loop123
author_rank: Frequent Contributor
timestamp: February 03, 2024, 09:58:34 am
content: Input signal is 40Hz. It started with high pass filter switched to 100Hz. Then when I switched it to 1000Hz, the noises started showing up, and becoming worse at 3000Hz, 10000Hz, 30000Hz, 50000Hz. Halfway I switched it back from 50000Hz back to 100Hz where the noise vanishes.Without the 40Hz. Does it mean there are high frequency waveforms at 0V origin? What usually caused such high frequency ripples in any circuit?

author: ebastler
author_rank: Super Contributor
timestamp: February 03, 2024, 07:54:22 pm
content: I just saw that you double-posted this (in the Beginners section). Please don't do that, it makes you rather unpopular. It confuses readers, and it makes people waste their time trying to answer the second copy of your question, duplicating the effort that may already be underway elsewhere.

author: Halcyon
author_rank: Unknown
timestamp: February 03, 2024, 10:25:29 pm
content: Duplicate post.
How was your experience buying directly from Aoyue (international)? - Page 1
Forum section: electronics / general

author: peteb2
author_rank: Regular Contributor
timestamp: February 02, 2024, 01:23:05 am
content: So back in mid December 2023 i had a truly nasty wee SMD repair that calls for the ic to solder its encapsulated HTSSOP (PWP) 16pin. Just a manual soldering & hot air soldering tool were nogo. I needed a proper pre-warmer. Over to Ayoue & their int 825++ looked the part for the small run i needed to do. So over $450 Kiwi bucks all paid via PayPal.My question now would anyone care to advise whether Ayoue International ever sent you the thing you paid for or even recognized the transaction on their required PayPal site had occurred? I have sent them email after email to multiple addresses including their send urgent message form in the help gui and nothing but crickets! i can even see my transaction is sitting, paid in full zip nadda anything else as far as status change...I need the machine & wondering whether Aoyue, though has a working website, has infact ground to a halt? Cheers if you can tell me :-)

author: abeyer
author_rank: Frequent Contributor
timestamp: February 02, 2024, 06:15:39 am
content: Quote from: peteb2 on February 02, 2024, 01:23:05 amI'd only ever seen their stuff listed on resellers here in the states, so kinda had to take a look... and it's pretty generous to call that a "working website." After a quick poke around, I'd perhaps describe it as one of the most janky ecommerce sites I've seen since the 90's. I'd almost be more surprised if it worked than if it didn't.

author: thm_w
author_rank: Super Contributor
timestamp: February 02, 2024, 10:11:32 pm
content: What is the date that it was paid?What pre heater are you talking about? I only see "INT 825A++" on their site which is a hot air station. I would probably not buy that.
ROB304 (LM304) pinout mapping metal can 10 pins to plastic DIL 14 pins - Page 1
Forum section: electronics / general

author: RoGeorge
author_rank: Super Contributor
timestamp: February 03, 2024, 01:18:37 pm
content: ROB304 is a negative voltage regulator from ICCE/Romania, manufactured during cold war, and compatible withLM304from National Semiconductor. Both ROB304 and LM304 have the same schematic, same capsule (10 pins metal can) and identical datasheets (except at least two schematic mistakes in the Romanian translated datasheet - i.e. 22k instead of 22\$\Omega\$, and a pin 5 left unconnected).Both ICCE and NS datasheets only show a single packaging type, round metal can 10 pins.However, the few NOS of ROB304 I have are in a DIL-14 plastic case, which is not shown in the Ro datasheet.The schematic happens to have 2 resistors (30k and 1k) exposed between pins 9-8-7 of the metal can version. Turned out those resistors were corresponding to pins 13-12-11 in the DIL packaging, so I've assumed they've just left unused pins 6-7-8-9 from the DIL package.Well, it didn't work. The chips were made during the 70's, and they were from grey market (which were often defective or out of specs parts), so it was puzzling why it didn't work. Though, living the most right-hand 4 pins from the DIL package out of the pins numbering was unusual, so I kept measuring voltages and resistance between pins, and they didn't make any sense by comparing with the internal schematic of the IC.Eventually, with the DMM on diode, managed to identify the NC pins, and turned out that pins 1,4,7,8 from DIL were skipped while counting!!!Took me a couple of hours to figure out they skipped some pins while mapping to DIL.Good news is now I have the DIL14 pinout of ROB304, and all the NOS chips are working.I wonder if this mapping between TO-100 and DIL-14 is normal, or if other manufacturers packaged LM304 in a DIL-14?

author: ebastler
author_rank: Super Contributor
timestamp: February 04, 2024, 11:13:58 am
content: That looks right. TI made a DIP14 version of their LM304N; datasheet with both pinouts here:https://4donline.ihs.com/images/VipMasterIC/IC/TXII/TXIIS100070/TXIIS144715-1.pdf?hkey=D9A213CC6FEE7D103EF6B88F2AEB20B8(If the direct link does not work, due to whatever they do with the "hkey", it's linked fromhttps://www.questcomp.com/part/4/lm304n/229073712)

author: RoGeorge
author_rank: Super Contributor
timestamp: February 04, 2024, 01:04:57 pm
content: Quote from: ebastler on February 04, 2024, 11:13:58 amDoh, thank you!The datasheets I've downloaded yesterday happen to have only the metal can versions.
TA-427AR military field telephone - Page 1
Forum section: electronics / general

author: soldar
author_rank: Super Contributor
timestamp: February 01, 2024, 03:44:38 pm
content: We come from here:https://www.eevblog.com/forum/chat/seeking-info-on-military-field-phone-ta-427ar/I have a military field telephone model TA-427AR which I have had for some years and I would like to find a suitable destination for it. The AR might stand for "automatic ringer" as there were other 427 with different suffixes.https://www.warmuseum.ca/collections/artifact/1325639/?q=material%3AMetal&page_num=1&item_num=193https://www.worthpoint.com/worthopedia/ta-427-field-telephone-automatic-536265526I would be willing to sell it except that I am not willing to set up an eBay account just for this. Too much trouble.I would even be willing to give it away to a worthy cause and I did email warmuseum.ca but they replied they already had one and had no need for another. (I felt like asking if they would join me in the search for the Holy Grail just to see if they would reply they already had one too. Maybe someone will get the reference.)At any rate, I found this video of a Canadian guy demonstrating some self-soldering splices. I guess crimping had not been invented yet.His channel looks at all sorts of old-time equipment (quite interesting) and I thought this field phone might interest him. I do not have a Google account so I cannot contact him on YouTube but if someone wants to alert him to this thread and/or ask him if he might be interested I would be grateful. I do recommend his channel.Or any other ideas of what to do with the phone.
AT&T long lines nuclear hardened underground bunker video tour - Page 1
Forum section: electronics / general

author: Homer J Simpson
author_rank: Super Contributor
timestamp: February 01, 2024, 03:14:28 am
content: Learning about the AT&T long line communication sites is very interesting in itself.Here is a cool video tour of one of the sites.More reading.....History of AT&T Long Lineshttps://telephoneworld.org/long-distance-companies/att-long-distance-network/history-of-att-long-lines/
NEED HELP!! Mystery Flash chip MFM8516 - Page 1
Forum section: electronics / general

author: Retromat
author_rank: Contributor
timestamp: January 31, 2024, 05:20:47 pm
content: Greetings everyone,i have a very unusual flash rom here and i think i cannot find any eeprom/flash programmer that can handle this rom.Here is the datasheethttps://pdf.searchdatasheet.com/a5b8ea50/mosaicsemi.com/MFM8516VI-15E.pdfIts a MFM8516 and i NEED to find a way ro Read and write it, the datasheet gives exact details how it operates but what could i use to actually make this happen?Is there any programmable flash rom reader out there? Is anywone willing maybe (I will pay but cant send the chip to you) to help me on this thing?

author: eutectique
author_rank: Frequent Contributor
timestamp: January 31, 2024, 06:06:34 pm
content: What is sovery unusualabout this chip? Address bus, data bus, /CE, /OE and /WE signals -- all the same for the past 40 years.

author: Retromat
author_rank: Contributor
timestamp: January 31, 2024, 06:09:13 pm
content: I knowits the way the data i written and read to it, and i can not find any software that supports this chip...

author: ataradov
author_rank: Super Contributor
timestamp: January 31, 2024, 06:47:08 pm
content: On a quick read through the datasheet, it seems to be a standard command set. Pick any supported device of the same geometry and it will likely just work.

author: Retromat
author_rank: Contributor
timestamp: January 31, 2024, 06:56:43 pm
content: hmmmm would you be able to recommend one?

author: ataradov
author_rank: Super Contributor
timestamp: January 31, 2024, 07:03:40 pm
content: It is hard to tell without knowing what your programmer supports. From a random search, something like MX29F040C might work.MX29F040C supports some additional commands, like reading a device ID, so if the programmer tries to use it, it might fail. You will have to look for even more basic equivalent.

author: SeanB
author_rank: Super Contributor
timestamp: January 31, 2024, 07:05:23 pm
content: 28C040 should at least allow you to read it, just do not try to identify the device.

author: Retromat
author_rank: Contributor
timestamp: January 31, 2024, 07:13:29 pm
content: thanks! that sond promising, i iwll be using a Galep5 for this but if you have any recommendation for something even better?

author: Retromat
author_rank: Contributor
timestamp: January 31, 2024, 07:18:23 pm
content: The funyn thing is, i have a second bard with the same layouts but then the chips on them are a WMF512K8 and they seem identical. I attached the spec sheet there too as i would bet they have the same operations just different manufacturers?

author: ataradov
author_rank: Super Contributor
timestamp: January 31, 2024, 07:20:37 pm
content: Yes, those devices are roughly identical. Flash is flash, it has been standardized. There are minor differences between the devices, but overall they all are interchangeable on a basic level (provided the same or better speed grade is used).
Mouser website issues - Page 1
Forum section: electronics / general

author: Lee697
author_rank: Regular Contributor
timestamp: April 26, 2021, 09:08:51 pm
content: Is anyone else having problems?Last night all I would get is '403 access denied', and this morning, although I'm not getting that, it won't return filter results.... just hangs in a progress 'swirl' waiting for results..... I just want to add some measly resistorsMacOS, Chrome, iiNet.....

author: isometrik
author_rank: Regular Contributor
timestamp: April 26, 2021, 09:22:11 pm
content: https://www.mouser.cais working for me. Searches included.

author: Lee697
author_rank: Regular Contributor
timestamp: April 26, 2021, 10:08:07 pm
content: Now its official I guess.....

author: Lee697
author_rank: Regular Contributor
timestamp: April 26, 2021, 10:53:09 pm
content: Even their feedback email form is now broken.....

author: KE5FX
author_rank: Super Contributor
timestamp: April 26, 2021, 11:00:52 pm
content: "Verfügbar."This is now a leading candidate for the Word of the Month.

author: Lee697
author_rank: Regular Contributor
timestamp: April 27, 2021, 04:03:18 am
content: Mystery solved....Reply to my email -'Sorry about that. Would you please try again now? Due to the website should updating at the time. So that the website is cannot use.'

author: Cartel
author_rank: Newbie
timestamp: January 31, 2024, 06:28:29 am
content: 403 Access Denied,works with a US ip but Canada denied

author: Faranight
author_rank: Unknown
timestamp: January 31, 2024, 07:19:34 am
content: My main Mouser issue is that it continuously manages to incorrectly identify me as a bot and displays that anti-bot screen and I can't browse it for a while.It mostly happens when I browse the site a bit "too fast" by clicking links too fast or having too many tabs open.

author: SiliconWizard
author_rank: Super Contributor
timestamp: January 31, 2024, 07:45:54 am
content: I've not had any major issue for a while, but their website has been ultra slow here for months. In particular, opening a Mouser page takes several seconds consistently. But once on the website, following links on it is relatively fast. Not sure what kind of check they do when you first connect, may be related to "access denied" issues some have.
Rasputins delivery robots stuck in Moskow snow! and robbot EV ferries! - Page 1
Forum section: electronics / general

author: MT
author_rank: Super Contributor
timestamp: January 30, 2024, 10:38:09 pm
content: We are the robots! Delivering hot borscht soup to Siberia!

author: RoGeorge
author_rank: Super Contributor
timestamp: January 30, 2024, 11:10:41 pm
content: Quote from: MT on January 30, 2024, 10:38:09 pmWe are the robbers! Delivering hot pizza to Hollywood!

author: MT
author_rank: Super Contributor
timestamp: January 31, 2024, 01:30:04 am
content: Delivery robot drives through a closed off LA Crime Scene, could easily be filled with explosives and remotely detonated or by the robot itself when detecting police text on their jackets/T shirts etc, etc.

author: SiliconWizard
author_rank: Super Contributor
timestamp: January 31, 2024, 01:32:21 am
content: If a robot makes itself blow up in the middle of the street, is it a terrorist?

author: .RC.
author_rank: Frequent Contributor
timestamp: January 31, 2024, 02:14:51 am
content: Quote from: SiliconWizard on January 31, 2024, 01:32:21 amI suppose it depends on whether it says 01000001 01101100 01101100 01100001 01101000 00100000 01000001 01101011 01100010 01100001 01110010 prior to doing it.

author: Black Phoenix
author_rank: Super Contributor
timestamp: January 31, 2024, 03:16:17 am
content: Quote from: MT on January 31, 2024, 01:30:04 amIf you imagine that, believe me someone somewhere though of something even worse.That's because everything for good can also be used for bad and the humans are a race that can't be respectful of others and be respected.There is always some conflict going, being religious or ideological anywhere in the world, from a simple assh*le who crossed in front of you too close in the traffic and flipped you the middle to a religious/political zealot giving/following orders to kill.But that's offtopic...

author: RoGeorge
author_rank: Super Contributor
timestamp: January 31, 2024, 03:27:51 am
content: Better make the robot transparent, add a coin mechanism, then fill the robot with donuts for the crowd of policemen there.
Linus Tech Tips Expands Again - Page 1
Forum section: electronics / general

author: EEVblog
author_rank: Unknown
timestamp: January 31, 2024, 01:26:36 am
content: As if his previous mega lab wasn't enough, he just bought(?) two 18,000 sq ft building for a LAN contest centre. Insane.

author: SiliconWizard
author_rank: Super Contributor
timestamp: January 31, 2024, 01:38:38 am
content: Well, so much for the prediction that LTT was gonna collapse after the whole drama thing.But yes, this is kinda insane.

author: thm_w
author_rank: Super Contributor
timestamp: January 31, 2024, 01:55:05 am
content: Sounds like its a badminton court rental 90% of the time then a LAN center 10% of the time. We need more badminton courts, though its Langley so too far from me.18,000 sq foot should fit around 15 courts? $20/hr per court if its fully booked, 8hr day, $2400/day minus expenses best case? I don't think that will pay back very quickly..The point tracking is a great idea, I was thinking of manual tap with a racquet but if he can automate it, you could charge more per hour.Cost should be in the $6-10 million range, PLUS all the electrical and hardware stuff hes adding. I only saw "112" address, if someone can find it or recognizes the area.

author: Stray Electron
author_rank: Super Contributor
timestamp: January 31, 2024, 02:10:30 am
content: He seems to have that "Midas touch" and everything that does seems to make money!

author: EEVblog
author_rank: Unknown
timestamp: January 31, 2024, 02:29:47 am
content: Quote from: SiliconWizard on January 31, 2024, 01:38:38 amLOL, yeah, nah. Storm in a tea cup.

author: SiliconWizard
author_rank: Super Contributor
timestamp: January 31, 2024, 02:45:41 am
content: Quote from: EEVblog on January 31, 2024, 02:29:47 amYep. To be fair, I think they have made some noticeable changes. They have cut down on the jokes, and are a lot more politically correct now.

author: Halcyon
author_rank: Unknown
timestamp: January 31, 2024, 02:49:33 am
content: Quote from: SiliconWizard on January 31, 2024, 02:45:41 amWhen are they going to brush up on their technical skills?

author: Black Phoenix
author_rank: Super Contributor
timestamp: January 31, 2024, 03:03:28 am
content: Well they died for me when they moved from the residential house they were making stuff for to the first warehouse they sound proof and build all the sets for.I unsubscribed them because for some reason I was starting not to enjoy their content. I still pop up occasionally to see if there is something that it may interest me, but with Luke being away of videos (he knows his stuff while presenting in a more professional way) and the new guy Anthony also gone because of personal reasons (Anthony is now a woman called Emily and looks like she had come back to the Apple Newton overview but still to see when regularly) I didn't really see anything in their reviews better than other YouTubers I follow (Gamers Nexus, Level1 Techs, PCWorld and Hardware Unboxed).
19v laptop running on 20v charger? - Page 1
Forum section: electronics / general

author: slybunda
author_rank: Regular Contributor
timestamp: February 01, 2024, 12:09:40 pm
content: iv got a laptop but dont have the correct 19v 3.25a charger for it but i briefly powered it up with my other laptops 20v charger and it worked fine.can i use this charger with the laptop long term or is 20v charger gonna kill it in the long run?

author: Andy Chee
author_rank: Super Contributor
timestamp: February 01, 2024, 12:12:33 pm
content: There's a similar thread elsewhere on this forum discussing your very scenariohttps://www.eevblog.com/forum/beginners/can-i-charge-my-laptop-battery-at-20v-and-5a-if-the-specs-state-19-5v-and-3-33a/

author: amyk
author_rank: Super Contributor
timestamp: February 01, 2024, 03:06:17 pm
content: Summary of that thread: they have weird voltages that are for mostly to give the appearance of vendor lock-in. 25V caps on main power rail, with a bit of margin, is how that 18/19/20 number is arrived at.
Help Me Identifiying a Connector - Page 1
Forum section: electronics / general

author: Abdurrahman YAMAN
author_rank: Newbie
timestamp: January 29, 2024, 10:05:41 am
content: Hello,I was given to design a board for an industrial application. The board has a unique connector that I have to use. Would you guys help me identify?Regards,

author: elektryk
author_rank: Regular Contributor
timestamp: January 29, 2024, 10:14:36 am
content: It is similiar to Hirschmann GO 60 but be careful with coding.

author: Abdurrahman YAMAN
author_rank: Newbie
timestamp: January 29, 2024, 10:54:28 am
content: Thank you! You are the best!
Mouser Raspberry Pi 5's... - Page 1
Forum section: electronics / general

author: bdbell
author_rank: Newbie
timestamp: January 26, 2024, 06:12:13 pm
content: I ordered one on Wednesday from Mouser, they had announced a few days earlier that they were receiving less than expected, but their system was still showing almost 500 of the ones expected tomorrow when I placed the order. Yesterday I got a notice it was being shipped the 28th instead...and then at 2:30am another update that my shipping date was now March 13th - anyone else have this happen? Everyone else seems to have them in stock - and a lot of those likely came from Mouser...!

author: SeanB
author_rank: Super Contributor
timestamp: January 26, 2024, 08:03:29 pm
content: Older orders, and larger orders, will get priority, and same for regular buyers.

author: floobydust
author_rank: Super Contributor
timestamp: January 26, 2024, 08:48:09 pm
content: Mouser must have been filling backorders and their system doesn't show the "500" are already allocated.PiShop.caformerly Buy-a-Pi in Canada is also a good vendor.RPi Locatorcan add to your torment.

author: SiliconWizard
author_rank: Super Contributor
timestamp: January 26, 2024, 09:00:35 pm
content: Anyways, well done RPi. I guess some of the "frenzy" over the RPi has been triggered (or at least largely aggravated) by the shortage, but it keeps going strong. They apparently produce around 400k units per month, and it's still not enough to meet demand. Crazy. Good job. Many would like to do as well on something that is essentially a 'dev board'.
Does this mean what I think it does? - Page 1
Forum section: electronics / general

author: PwrElectronics
author_rank: Regular Contributor
timestamp: January 25, 2024, 02:57:08 am
content: My employer sells products world wide. I am in the US. An expensive and system critical power electronics item failed a couple months ago with very low hours and for reasons I don't know took until last week to finally get returned to its origin in the states from a customer in Australia. It seemed to spend several weeks in customs and then was traveling around to several states in the US after that.Tech in the lab was checking it out this week when it finally arrived and I happened to notice that the letters "NFG" where written on the side with a paint pen.I am assuming this means what I think it means !? haha.In my head I am hearing some service tech in Australia saying it out loud whilst writing that on there.

author: TimFox
author_rank: Super Contributor
timestamp: January 25, 2024, 03:21:34 am
content: The official meaning of the abbreviation is “non-functioning gear”, but no one says it that way.

author: CatalinaWOW
author_rank: Super Contributor
timestamp: January 25, 2024, 04:32:55 am
content: Very much like RTFM (Read the Fine Manual)

author: David Hess
author_rank: Super Contributor
timestamp: January 25, 2024, 06:13:48 am
content: Or like IHTFP which means I Have Truly Found Paradise.

author: Smokey
author_rank: Super Contributor
timestamp: January 25, 2024, 07:14:03 am
content: HA! Looking around my lab, there are at least 3 pieces of equipment with some button or knob labeled (by me) as "NFG". In all cases, ya that's what it means.
Confused about which LISN to build or buy? - Page 1
Forum section: electronics / general

author: Higgsfield
author_rank: Newbie
timestamp: January 24, 2024, 12:36:51 pm
content: I hope I'm posting this in the correct forum?I'm confused about what type of LISN I need to do pre-qualification FCC Part 15 testing for a 12VDC powered circuit up to about 10A. I'm thinking of either building or buying a used one.1. I see that there are different models available. Can I used a 5uH LISN or do I need a different configuration?a. 250uH/50uHb. 5 uH.c. 50 uH2. And then there is the frequency range I've seen on devices like 10KHz - 400Mhz, and 100KHz - 400MHz. Will either do?3. Further do I need a LISN for both the power and ground lines, or can I use a single channel and switch them between the two lines?Any feedback would be much appreciated.

author: GridWork
author_rank: Contributor
timestamp: January 24, 2024, 02:11:23 pm
content: I used to do some emi testing a couple of decades ago, I don't remember which type of LISN we used, but we did have two, one for power and one for ground. The test installation was on a bench covered with a copper sheet for a solid ground plane. The 50uH seems familiar, the enclosures for the LISN's were large grey boxes about 6" x 6" x 10" or so.

author: nctnico
author_rank: Super Contributor
timestamp: January 24, 2024, 03:05:11 pm
content: The only way to know for sure is to dig up the relevant test requirements. The type of LISN required should be in there.
CCTV NVR DVR Software Suggestion - Page 1
Forum section: electronics / general

author: rvalente
author_rank: Frequent Contributor
timestamp: January 23, 2024, 12:35:19 pm
content: Hello Mates,i've two Intelbras onvif protocol network cameras, plan do add one more, so three total. I've an spare computer which I'd like to use as video recorder, its a intel atom (or celerom, dunnon, old stuff).Which software would you guys recommend? I'd like it to have these features:Free or max 50USD licenseUp to 4 camerasCloud backup to onedriveLive and playback view on smartphone appSome alarms like motion dection with conditions (alarm input, closed door, etc)Greetings,Renan

author: BradC
author_rank: Super Contributor
timestamp: January 23, 2024, 12:55:44 pm
content: Milestone XProtect is free for up to 8 cameras and would be what I recommended for a basic windows install.The other commonly used software is Blue Iris. It started out as a bit of a toy, but it has developed some more grown up features over the last couple of years.Can't help with the off-site backup however.

author: darkspr1te
author_rank: Frequent Contributor
timestamp: January 23, 2024, 12:59:44 pm
content: There is a linux distro called Shinobi which while very good is not so easy to setup.Another app is called Agent DVR, has great features and camera limit is only the limit of your cpu/GPU /memory but it wont allow remote access via WAN connection, thats it's only downside to me. I use it on 3 sites to combine a total of 3 DVRS/site on analog and it's really good at doing that. setup is easy as once you done the linux install you just run a curl script, answer a few questions and then browse to a web page where you then add cameras via a wizard.darkspr1te
LDR brand HOLLAND 93 datasheet - Page 1
Forum section: electronics / general

author: DenCraw
author_rank: Contributor
timestamp: January 19, 2024, 12:20:26 pm
content: Hi.I hope this message finds you well. I am currently in need of assistance in finding the datasheet for a specific LDR. If someone could help me with this, I would greatly appreciate it.Thank you in advance for your help.Best regards

author: Benta
author_rank: Super Contributor
timestamp: January 19, 2024, 06:00:56 pm
content: Philips. Holland is place of manufacture.

author: Benta
author_rank: Super Contributor
timestamp: January 19, 2024, 09:36:31 pm
content: IIRC, part number is ORP12 from Philips/Mullard.

author: DenCraw
author_rank: Contributor
timestamp: January 20, 2024, 09:00:47 am
content: Thank you very much Benta. I have found the datasheet! ... in the way back machine!https://ia902604.us.archive.org/9/items/ORP12-photoresistor/ORP12.pdf

author: tooki
author_rank: Super Contributor
timestamp: January 20, 2024, 09:19:51 am
content: Quote from: Benta on January 19, 2024, 06:00:56 pmAnd I suspect “93” was the year it was made!

author: Benta
author_rank: Super Contributor
timestamp: January 20, 2024, 11:38:12 am
content: Wow! "June 1965."
What's this component? - Page 1
Forum section: electronics / general

author: amir.razzaqi
author_rank: Contributor
timestamp: January 25, 2024, 01:13:38 pm
content: Does anyone know what this component is, please?​

author: MLXXXp
author_rank: Frequent Contributor
timestamp: January 26, 2024, 03:19:26 am
content: Could be a BSS138 MOSFET

author: pcprogrammer
author_rank: Super Contributor
timestamp: January 26, 2024, 07:56:45 am
content: MLXXp is most likely correct. Seehttps://www.s-manuals.com/smd/j1for more information.A simple google search for "smd marking j1" does the trick.
New computer mimic human brain and I'm kinda scared says Sabine Hossenfelder - Page 1
Forum section: electronics / general

author: SiliconWizard
author_rank: Super Contributor
timestamp: January 17, 2024, 12:24:50 am
content: Depending on whose brain it mimics, it can be very scary indeed.

author: Alex Eisenhut
author_rank: Super Contributor
timestamp: January 17, 2024, 12:38:54 am
content: This has always been my anthemhttps://youtu.be/9eqtwjgvNGc

author: .RC.
author_rank: Frequent Contributor
timestamp: January 17, 2024, 02:52:21 am
content: If it is a male brain, is all it will do is look up a certain sort of subject matter on the internet?
ASML global semiconductor giant - 2022 Documentary - Page 1
Forum section: electronics / general

author: jonovid
author_rank: Super Contributor
timestamp: January 16, 2024, 12:12:39 pm
content: ASML specializes in the development and manufacturing of photolithography machines which are used to produce computer chipsI recommend this 1hr 2022 from the Netherlands documentary. despite the non English speaking parts of it.

author: pcprogrammer
author_rank: Super Contributor
timestamp: January 16, 2024, 02:19:20 pm
content: Quote from: jonovid on January 16, 2024, 12:12:39 pmNot a problem for me.But indeed an interesting documentary. I have known of ASML quite some time and have met people who work(ed) there when I did work for a company in Eindhoven which is close by Veldhoven where ASML is located. Never been at the company though and did enjoy the insights in the documentary.
Using 5.8ghz antenna to increase 5G cellular signal? Same thing?  - Page 1
Forum section: electronics / general

author: bigjoncoop
author_rank: Regular Contributor
timestamp: January 16, 2024, 09:20:15 am
content: I have T-Mobile 5G home internet but I live in a area where the signal is very weak. If I move the Gateway even 1in it will lose the 5D connection and go down to LTE and is unusable.T-Mobile is now offering a new Gateway with a external 4x4 MIMO antenna. And there is a lot of information from the DIY community, how to connect a external MIMO antenna to the normal gateways that don't have external antenna connectors...***MAINQUESTION***I'm curious if it's possible to use normal 5.8ghz antennas in order to pickup 5G cellular? I have a bunch of old 5.8ghz dipole, omni, and patch antennas I used to use for video transmission for RC FPV....Is 5G cellular the same as 5.8ghz? If so I was thinking of using two omnidirectional antennas and two patch antennas mounted outside and connected to my T-Mobile 5G Gateway. I would obviously aim the 2 patch antennas towards the closest tower...I know that obvious answer would be to just get the new T-Mobile provided Gateway with external antennas, but where is the fun in that... 😜 or I could purchase a 4x4 MIMO antenna but there at least $80 or way more... and I already have a boatload of 5.8ghz antennas laying around...Thx

author: Halcyon
author_rank: Unknown
timestamp: January 16, 2024, 09:36:59 am
content: 5G and 5 GHz Wi-Fi/5.x GHz RF are NOT the same thing.5G in cellular terms only means "5th Generation". It has nothing to do with the frequency. Cellular frequencies vary by country and even down to individual towns and cities.You would need to find what band(s) your nearest tower (for your carrier) transmits and receives on and then build your infrastructure accordingly. Not sure how easy that is in the US, but in Australia, all towers, carriers and frequencies are publicly available viahttps://www.rfnsa.com.auTo give you an example, 5G cellular in Australia are mostly on the 3500 MHz band, with some carriers also operating 5G services on on 700-850 MHz, 1800 MHz, 2100-2300 MHz and 26 GHz. 2G is no longer a thing here and the last of the 3G services will be switched off by September this year. At that stage, frequencies previously used will be re-purposed for 4G/LTE and 5G services.

author: NiHaoMike
author_rank: Super Contributor
timestamp: January 16, 2024, 12:39:19 pm
content: Try making a parabolic reflector out of aluminum foil and positioning it so that the built in antennas are at the focus point.
Gems found about electronics - Page 1
Forum section: electronics / general

author: eTobey
author_rank: Super Contributor
timestamp: January 15, 2024, 03:42:43 pm
content: Since google and youtube searches often yield quite a lot of garbage or poor quality results, i thought it would be a good thing to resurrect the link list, and to collect some "gems".I guess everybody loves gems ;-)It would be nice to add some information about those links. Please add only links that are true gems! No one likes fake gems ;-).https://www.youtube.com/@BirichaLecturesPhysical in depth and practical measurements - good explainationVery interesting video - Other videos are worth to watch from this channelOld but gold - Wave propagationOld but gold - Wave propagationOld but gold - Wave propagationOld but gold - Square wave - harmonicshttps://www.youtube.com/@sambenyaakovIn depth physical explainations of circuitsWave propagation - This is a must watch!!!

author: Andy Watson
author_rank: Super Contributor
timestamp: January 15, 2024, 04:05:25 pm
content: Barrie Gilbert (as in "Gilber cell"), explaining translinear circuits, i.e. how to perform multiplication and division and other functions with analogue components.

author: shapirus
author_rank: Super Contributor
timestamp: January 15, 2024, 04:31:14 pm
content: A golden two-part video about passive filters (straight to the point, no "subscribe to the channel" and "let me know what you think in the comments down below" BS):

author: armandine2
author_rank: Frequent Contributor
timestamp: January 15, 2024, 09:02:26 pm
content: gems, well good and amusing stepping stones:Big Clive and the power supply leads upgradeAdamant IT, Graham and the CH341A 3.3V mod
programmer for lattice mach211sp  - Page 1
Forum section: electronics / general

author: oggie
author_rank: Contributor
timestamp: May 16, 2023, 07:41:16 pm
content: I need to program a couple of mach211 chips, so I don't really want to invest in an expensive programmer for just a few chips.I have a tl866-II and a superpro 610. As well as a few jtag usb based programmers. Even if I got a plcc to dip adaptor, the software for those programmers don't seem to have support for these lattice chips.I also see there's an adaptor for the hi-lo programmer :https://github.com/nobodyisinocent/ADP-Mach-for-HiLobut I don't have the all-03 programmer.Any suggestions?

author: KG7AMV
author_rank: Frequent Contributor
timestamp: October 05, 2023, 03:29:20 am
content: Did you ever get them programmed? I can do that chip with my Xeltek Superpro 6100N and 7500

author: KG7AMV
author_rank: Frequent Contributor
timestamp: October 06, 2023, 04:23:25 am
content: Noticed the 6100N don't support the SP some times it don't matter but the Superpro 7500 supports the SP. If you just have a hand full that need to be programmed I would be more then happy to help ya out. Right now 60+% of my business is programming chips and if it's not under NDA = youtube content. I think I still have a PLCC44 adapter. I don't run across PLCC's often any more.

author: oggie
author_rank: Contributor
timestamp: October 13, 2023, 01:04:37 pm
content: Thanks for the offer. I ended up buying the chips from a source that can also program them for me, so I used that service.

author: shift838
author_rank: Newbie
timestamp: January 15, 2024, 06:50:16 pm
content: Quote from: oggie on October 13, 2023, 01:04:37 pmI am in need for the same programming on the same chip. Who did you use to purchase the ICs and have them programmed?

author: oggie
author_rank: Contributor
timestamp: January 15, 2024, 07:12:04 pm
content: I bought them from buyicnow.com.
Spinning lidar - how does base rotation affect it? - Page 1
Forum section: electronics / general

author: vv_eev
author_rank: Contributor
timestamp: January 14, 2024, 09:45:58 pm
content: I'm working on a project with 2 small teams. The team I'm on for lidar data acquisition, and the other for a rotating base for other equipment. The other team insists on mounting the lidar on their rotating mechanism. The base will use steppers so movement may be a bit jittery too. The lidar unit spins rapidly while acquiring in 3D, but it acquires data fairly slowly and I'm worried this will cause significant issues with our data, which is used to tell the base how to turn to face an object.The lidar unit comes with basically zero documentation, but querying the base rotation and compensating for each data point may not be feasible d/t the way the lidar scans in batches of points. Scanning only when the base isn't moving will preclude the feature of tracking motion.What are people's thoughts on correcting this data? Anything else that can be done without making the lidar base stationary?
The World's First Microprocessor: F-14 Central Air Data Computer - Page 1
Forum section: electronics / general

author: BrianHG
author_rank: Super Contributor
timestamp: January 18, 2024, 08:05:20 am
content: Yup, this one came out before Intel's 4004, though it was considered 'top secret' tech.This is a long one, but you can just watch the intro and skip through to the chapters which matter...
World science festival , Brian Greene, guest tonight? - Page 1
Forum section: electronics / general

author: vlad777
author_rank: Frequent Contributor
timestamp: January 12, 2024, 09:36:23 pm
content: Brian Greene was to stream tonight , but technical reasons cut the stream early on.Video is now unavailable / private.What was the name of his guest?(he was old and had grey long braided har)Many thanks.Edit: episode was titled something like:Intelligent thinking about artificial intelligence
News: First graphene semiconductor... - Page 1
Forum section: electronics / general

author: BrianHG
author_rank: Super Contributor
timestamp: January 13, 2024, 06:07:31 am
content: At least it is a real graphene substrate, not like those BS battery/supercapacitor tech which just has graphene flakes/powder added to the dielectric.I give it at least decade before we see if first used in the analog RF high GHz applications where you can save the most amount of power with at the power amplifier stages like in WiFi, then the first logic ICs, probably a high frequency low power device CPUs.

author: SiliconWizard
author_rank: Super Contributor
timestamp: January 13, 2024, 10:34:17 pm
content: Yep, seen that. Looks like a potential "breakthrough", just not sure how/if it's going to make it to large-scale manufacturing at reasonable costs, even 10 years from now. We'll see.
EEVblog YouTube 4K Camcorder? - Page 1
Forum section: electronics / general

author: Wil_Bloodworth
author_rank: Regular Contributor
timestamp: January 11, 2024, 10:09:15 pm
content: Anyone know what 4K Camcorder(s) Dave uses on his channel?Thanks!- Wil

author: Halcyon
author_rank: Unknown
timestamp: January 11, 2024, 11:12:29 pm
content: He mentions his recording equipment a few times in several videos, but I can't find the references to them now. I believe it was a Sony model of some kind? Might have even had a removable lens (or at least one of his cameras did).

author: Psi
author_rank: Super Contributor
timestamp: January 11, 2024, 11:30:35 pm
content: He's had a Sony NX80, Sony A6300, Sony RX100-IV and Sony ZV-E10But I don't know what he is using now. If it's one of those above or a newer one.I also don't know anything about Sony cameras and which, if any, of those do 4k

author: Wil_Bloodworth
author_rank: Regular Contributor
timestamp: January 12, 2024, 01:52:26 am
content: Quote from: Psi on January 11, 2024, 11:30:35 pmThank you. I have the Sony A6100 and it does 4K but I'm not sure it is capable of what I saw today during his Fluke meter teardown video. I'll have to look into those others you mentioned. Thanks!- Wil
What is the name of these ? - Page 1
Forum section: electronics / general

author: ytterligare
author_rank: Regular Contributor
timestamp: January 07, 2024, 01:13:34 pm
content: I saw them used sometimes to ease the grip on SMA connector, but, given I'm not native English speaker I have no idea on how to describe them for google searching."Plastic hexagonal SMA handler ?""SMA nut grip aid ?"In any case, anyone knows where to get a batch of them, AliExpress or else ?CiaoAndrea

author: Ian.M
author_rank: Super Contributor
timestamp: January 07, 2024, 01:42:02 pm
content: Try googling:SMA thumb wrenchor:SMA finger spanneror:SMA spinner

author: ytterligare
author_rank: Regular Contributor
timestamp: January 07, 2024, 01:57:33 pm
content: Quote from: Ian.M on January 07, 2024, 01:42:02 pmThanks a lot, it actually worked although all the makers seems to be from the US : a 10 USD package batch with at least 25 USD shipping to EUCiaoA.

author: mendip_discovery
author_rank: Super Contributor
timestamp: January 07, 2024, 01:59:45 pm
content: SMA connector grip seemed to work ok for me.https://www.sdr-kits.net/SMA-Spinner-Gripshttps://www.droneauthority.co.uk/products/tpu-sma-connector-gripsPlenty that can be 3d printed in tpu.

author: Ian.M
author_rank: Super Contributor
timestamp: January 07, 2024, 02:07:19 pm
content: Even 3D printed in PLA they'd still be very usable. If you don't know anyone with a 3D printer try your nearest makerspace.Also the SMA nut is 5/16" which is only 0.8% smaller than 8mm, so something likethisfrom Amazon would probably do if you only need one for your toolbox, if you have room to use the length of it + a handle. The slotted nut driver style is very much preferable if there isn't plenty of flat panel space all round the SMA connector.

author: BILLPOD
author_rank: Frequent Contributor
timestamp: January 11, 2024, 07:50:48 pm
content: How about: Flare nut wrenches