hybridfree/eevblog-posts huggingface dataset:
Universal IC Tester recommendation - Page 1
Forum section: electronics / general

author: GamerC64
author_rank: Newbie
timestamp: March 06, 2021, 08:26:44 am
content: Anyone recommend a reliable Universal IC Tester? the tester needs to check the usual TTL, CMOS, memory, 8bit CPU's and able to program eprom's. I am looking at a the "Universal IC Tester (VPL-UICT)", "UNIVERSAL IC TESTER - ( DICT-02 )" or the "Signstek TL866PLUS Universal USB MiniPro EEPROM Flash BIOS Programmer". I do prefer to purchase in Australia, otherwise overseas it is.Thank you in advancedRegards,GamerC64
MOVED: 40W 300x200mm Laser Cutter Engraver - Vollerun - Page 1
Forum section: electronics / general

author: beanflying
author_rank: Super Contributor
timestamp: March 06, 2021, 04:46:09 am
content: This topic has been moved toMechanical Engineering.https://www.eevblog.com/forum/index.php?topic=121883.0
Last change to buy (easily) from Aliexpress in Austria - what to get? - Page 1
Forum section: electronics / general

author: justanothername
author_rank: Regular Contributor
timestamp: March 01, 2021, 12:53:39 pm
content: Hi all.So here in Austria, the government will change the tax free amount from 25€ to 0€ in 3 months. Furthermore there will be a mandatory handling fee from customs on each order.For me that means I got 1 month aliexpress left (with delivery time taken into account).There is stuff that you can't buy somewhere other than directly in china, like decent test hooks that are not too expensive and other things. So I'm asking you dear forums:What du I have to buy in your opinion on this last chance? I'm thinking about small tools, maybe development kits or PCBs, or similar.Any Ideas welcome!
Does anyone have version 3.32 of the BK Precision 866 programmer software - Page 1
Forum section: electronics / general

author: dorkshoei
author_rank: Frequent Contributor
timestamp: February 22, 2021, 08:00:24 pm
content: BK Precision has discontinued the 866.https://www.bkprecision.com/products/discontinued/866-universal-device-programmer-with-usb-interface.htmlThey still have a link to the software under "docs and software". Version V3.64.Unfortunately, they discontinued support for the 866 in version 3.32 and so V3.64 won't work (and installing it will throw away your old working version unless you saved the old installer).BK Precision are clueless and can only offer a far earlier version V2.39. They were however kind enough to tell me I could uprade to the 866C for $1145I was able to download V3.32 for the (parent) Elnec product, and as long as I select "beeprog" it seems to workbut I'm wondering anyone happens to have a copy of the BK V3.32 installer saved anywhere.

author: dorkshoei
author_rank: Frequent Contributor
timestamp: February 23, 2021, 12:43:21 am
content: Ignore. BK finally clued themselves in.If anyone else ever needs the final 3.32 version for the 866 drop me a line [as of now they removed the bogus version, who knows if they'll add back in this correct one]

author: asis
author_rank: Frequent Contributor
timestamp: February 24, 2021, 01:00:47 pm
content: Hi,All versions of SW BK Precision, old and new, can be found on the Dataman website, aka Elnec, aka (partially) Advantech.On the Dataman forum you can find useful information, including some not flattering ones.Before buying programmers, consider whether you have enough money to buy adapters and credit boxes for them.Be carefull!https://forum.dataman.com/viewforum.php?f=42&start=25https://www.eevblog.com/forum/reviews/new-beeprog-2-disappointment/msg285482/#msg285482https://www.eevblog.com/forum/microcontrollers/what-is-the-best-universal-programmer-xeltek-vs-elnec/

author: dorkshoei
author_rank: Frequent Contributor
timestamp: February 24, 2021, 02:19:42 pm
content: Quote from: asis on February 24, 2021, 01:00:47 pmWhat you write above isnt relevant so I am unsure why you said any of it.If you reread my original post you will see I had already found the Elnec branded software.My 866/Beeprog doesnt have the "credit" issues that the newer programmers have plus its irrelevant to the problem described as I had no intention of buying another newer upgrade as I stated.Thanks
Work bench finish recommendations - Page 1
Forum section: electronics / general

author: matthuszagh
author_rank: Frequent Contributor
timestamp: February 23, 2021, 01:24:10 am
content: I'm looking to buy a new work bench and deciding on the finish I want for it. I'm mostly deciding between a static-dissipative laminate (comes with a grounding snap) and a chemical + scratch resistant phenolic plastic. Most of the work I do is typical electronics work: instrument assembly/disassembly, repair, soldering etc. Therefore I'm leaning toward the static-dissipative material. If I settled for the phenolic plastic, I would additionally use a static-dissipative mat as it is non-conductive. I don't plan to do much work with chemicals but I do use typical electronics work chemicals (alcohols, ferric chloride for etching circuit boards, polishing compounds for metal and plastic, acetone, etc.), so I think the phenolic plastic is probably overkill. Additionally, these chemicals should mostly not come into contact with the table surface. The static-dissipative laminate is supposedly resistant to dilute chemicals, but I don't have more specific information than that.The static-dissipative material can withstand temporary temperatures of below 135C and prolonged temps of below 65C, so I'd need to use some sort of protection when I use a hot air gun. I haven't yet checked the heat resistance of the phenolic workbench. Other finish options are wood with a mineral oil finish and stainless steel. In terms of cost, the phenolic and stainless steel are not cheap - about 2x the price of the wood or static-dissipative laminate. I'm hoping to have this bench for a long time, so long-term durability is definitely an important criteria. All of the options support enough weight for my purposes. Any recommendations in regard to material finish? Any reason why I should not go with the static-dissipative table? I'm happy to provide more information if needed. Thanks!

author: wizard69
author_rank: Super Contributor
timestamp: February 23, 2021, 10:13:55 pm
content: Actually I prefer wood or some sort of wood composite for benches. Finish with a durable all weather varnish. For Static use a mat designed for the purpose.The problem with laminates is that once they go bad, (get scratched up, burnt & etc) it is very hard to get a decent repair. With plain wood or a composite wood product you can often sand out and refinish.For benches that get heavy wear slap a sheet of fiber board on top.In either case you can apply an epoxy penetrating sealer to harden the surfaces. The sealers can also help prevent the ingress of liquids.
Worth it to buy Sugon T26 Soldering Station? - Page 1
Forum section: electronics / general

author: Ventran
author_rank: Contributor
timestamp: February 23, 2021, 03:26:38 pm
content: Hello everyone,I want buy new soldering station. I thinging about JBC Clone -SUGON T26. This soldering station has a orginal JBC Soldering Tip C210 series and it is compatible with original Handle. I can get this Station for about $120.Another low cost solution for me isXytronic LF2000Soldering station. Price about $100.Which is better?
Is this an Eakins 1080p HDMI microscope camera? - Page 1
Forum section: electronics / general

author: Ungolian
author_rank: Regular Contributor
timestamp: March 31, 2021, 05:58:41 am
content: The annual sale is on at AliExpress, and I was looking to pick up something for soldering. This looks like a good deal-https://www.aliexpress.com/item/4000289293307.html?spm=a2g0o.cart.0.0.bc683c00JwvQY8&mp=1No lable Chinese brand, specs look legit, and it only needs to give me 1080p @ 60fps. The video has an Eakins brand on the one they are using, but the ones for sale don't. I guess it happens with other stuff like multimeters. Just asking to see if anyone is familiar with it, if the specs are correct, or if there are any firmware/hardware issues with it. I'd hate for the HDMI to give out and have to use VGA.
JBC CD-2BQF Hibernation issue - Page 1
Forum section: electronics / general

author: gobo207
author_rank: Contributor
timestamp: February 08, 2021, 10:22:08 am
content: G'day All,I have been testing out my new station, a JBC CD-2BQF and have noticed some strange behaviours in hibernation. Anyone seen behaviours like this from a JBC before?From what I can tell, it only happens when Sleep and hibernation are both set to 0 minutes. Since I'm not on the clock and can afford to wait an extra 2 seconds for it to heat up every now and then I want to extend my tip life as much as possible. By having both Sleep and Hibernation set to 0 minutes the tip will hopefully last a lot longer.Please see the youtube video for a demonstration of the fault. It appears like the tip is not heating during this fault.https://youtu.be/LOfHKq1iH3oCheers,Gobo

author: DavidAlfa
author_rank: Super Contributor
timestamp: February 09, 2021, 08:05:08 am
content: Since you bought a nice and expensive JBC product, better to contact them and expose your problem.

author: gobo207
author_rank: Contributor
timestamp: February 10, 2021, 02:34:15 pm
content: Not sure how you thought this would help DavidAlfa. How does the price and brand of the product contribute?Thanks gabinetex for the advice, since I'm very prone to leaving it sit for hours at a time I'm going to keep hibernation active.I'll respond here with the JBC response. I did look at a firmware update but the JBC software is 60+MB and unsigned, all to update some firmware....Cheers,GoBo

author: DavidAlfa
author_rank: Super Contributor
timestamp: February 11, 2021, 08:57:27 am
content: What I mean. You didn't buy some crippled half-made chinese product. It's a JBC. So if you have any issues you have right to use support/warranty services

author: gobo207
author_rank: Contributor
timestamp: February 11, 2021, 03:01:50 pm
content: DavidAlfa, yes that is an option, and I have done so. Currently doing a few tests with them. I don't think anyone needs you to come in here and tell them to contact the manufacture. As I'm more interested in the problem then sending it back to JBC I posted to the eevblog to get some more intelligent responses.Cheers,GoBo

author: gobo207
author_rank: Contributor
timestamp: February 14, 2021, 03:54:06 pm
content: Hi all, final update.After talking with JBC, initially the rep asked for me to return the unit. Since the company never originally posted to Australia I told them that wasn't an option. They then asked me to clean the contacts between the tool and holder. This didn't fix the issue, I also noticed the screen on the holder that makes contact with the wire was loose. This also didn't fix teh issue but did appear to make it slightly better.Finally JBC asked me to update the firmware. This has solved the issue. As to why a firmware bug was making the temp jump up and down and cause it to log entering many many sleep cycles, I don't know. Maybe they are fudging the number upon taking the tool out of the holder?Cheers,GoBo
Reading live and logged data from a Contec CMS50D+ Pulse Oximeter - Page 1
Forum section: electronics / general

author: MarkMLl
author_rank: Frequent Contributor
timestamp: February 12, 2021, 07:09:57 pm
content: In case it's of any use to anybody, I've put a program athttps://github.com/MarkMLl/Contec_cms50dpluswhich interfaces to a USB-connected pulse oximeter.This was derived in a bit of a rush from my earlier program to read a Mastech MS2115B meter, and is written in Pascal (FPC, Free/Florian's Pascal Compiler) to run on Linux. It can be compiled to present a GUI to the user in which case it has some rather crude graphs, or alternatively it runs as a console program sending its results to stdout in a form where they could fairly easily be transferred to a spreadsheet etc.There are at least three different versions of this device, with protocols running at 4k8, 19k2 and 115k2. The software is for the last of those and my unit is identified as 4.6, but I am not confident that that number is a unique identifier.There is documentation on the (Bluetooth?) protocol used by the Contec CMS50EW athttps://github.com/vats28/Contec-CMS50EW/blob/master/Communication%20protocol%20of%20pulse%20oximeter%20V7.0.pdfwhich appears very similar.MarkMLl
jovy re-7500 tc error - Page 1
Forum section: electronics / general

author: Techbaba
author_rank: Newbie
timestamp: February 11, 2021, 09:54:08 am
content: hello,Please does any one have this machine and faced a thermocouple error i get weird temp readings. I have changed the t/c with a new one but same problem.I feel the mcu is bad or firmware it uses a cypress CY8C29566-24AXI. does anyone have this firmware will be of great help there is a UX1 connector for isp programming.thanks
ATTEN gt 6200 is this a chinese rebrand solder station - Page 1
Forum section: electronics / general

author: psxpetey1
author_rank: Regular Contributor
timestamp: February 10, 2021, 03:56:48 am
content: found this on alibaba:https://www.aliexpress.com/item/4000017050855.htmland I went to their website and a lot of their stuff just looks like Chinese rebrands:https://www.atten.eu/soldering-products. Theres a few cheap hot air ebay stations some yihuas and some gear I'm not familiar with. This station but cheaper would be pretty badass. I like the hot tweezers specifically as they look like those weller ones nd I saw a technique where you use the tweezers with a spatula tip and you can hold solder wick and easily chew throw bga solder balls like butter with zero chance of lifting pads.

author: thm_w
author_rank: Super Contributor
timestamp: February 10, 2021, 09:08:17 pm
content: Odd, never came across this while looking for mid-range soldering tweezers, which don't really exist. These look better than the cheapies.Is it using the same tips as JBC?https://www.atten.eu/product/1129394/atten-gt-6200-dual-channel-high-end-intelligent-unleaded-soldering-station
Weller Zero Smog EL connector - Page 1
Forum section: electronics / general

author: dexar
author_rank: Contributor
timestamp: February 01, 2021, 11:29:21 pm
content: I just bought myself a Weller Zero Smog EL kit. The base unit has a 4P4C connector which can be used to connect to a remote switch. Does anybody know the pinout of the connector?

author: at101
author_rank: Newbie
timestamp: February 09, 2021, 05:22:42 am
content: I had the same question a few years ago so I bought the Weller FT91000033 remote switch to figure it out. Turns out to be pretty simple - two wires are connected to turn the unit off and when disconnected, it turns on.On the 4P4C, when looking at the jack on the Zero Smog EL unit, the top two pins are the ones you want. The bottom two aren't connected in the remote switch and I haven't dug any farther to see what they might do in the unit.
Crimp Tool for JST SSH-003T-P0.2 - Page 1
Forum section: electronics / general

author: Franck
author_rank: Contributor
timestamp: February 05, 2021, 06:54:27 pm
content: Hi,Does anybody know of an affordable tool to crimp the JST SSH-003T-P0.2 crimps on 28AWG wire?Those crimps go on 1mm pitch connectors, so very small.There is the official one from JST for over 1,000$. I am sure it is worth it if you do a lot of crimping, but I may only crimp 50 cables per month...I already have an IWISS SN-2549, which is too big for this crimp size.Thanks for any help!

author: profanum429
author_rank: Regular Contributor
timestamp: February 06, 2021, 01:14:37 am
content: You might be able to get away with the Molex Picoclasp crimpers; they are also 1mm pitch and have a same style open terminal design. The dimensions on the JST are a little longer, so it probably won't mangle the ends. No guarantees though, I've never messed with this size contacts (I don't enjoy crimps that are 1.25mm much less tinier ones).The Molex PN is 63819-1500, there is one on eBay in the US for $250 with a best offer, not sure if they'd ship to Taiwan though.

author: nctnico
author_rank: Super Contributor
timestamp: February 06, 2021, 03:12:41 am
content: Get the JST crimper especially if it is for professional use. It will pay for itself quickly. I managed to buy one from Ebay after trying the cheap iWiss tool but that turned out to be way too unprecise for small crimp contacts like the JST SSH series.There is one for sale right now:https://www.ebay.com/itm/JST-WC-SH2832-CRIMP-TOOL-MINI-REEL-RATCHET-JAPAN-SOLDERLESS-TERMINALS-28-30-32/174623379460I have no affiliation with the seller but I strongly suggest to buy it.

author: Franck
author_rank: Contributor
timestamp: February 06, 2021, 11:01:49 am
content: Thanks for the answers.I'll have a look at the Molex one, but that would be the maximum I would spend on it a crimp tool that I won't use on regular basis.More than 250$ and it would make more sense for me to pay someone to make cable assembly.

author: nctnico
author_rank: Super Contributor
timestamp: February 06, 2021, 02:55:09 pm
content: You can always try to contact the Ebay seller and make an offer. Start with $125 and see where it goes.
Looking for such a speaker think... - Page 1
Forum section: electronics / general

author: Lord of nothing
author_rank: Super Contributor
timestamp: February 05, 2021, 08:03:33 pm
content: A long time ago a company offer such a think with a Suction Cub to put it on a Window:Is there such Vibration Speaker who I put on a Window and hear the Musik from here?Thanks!

author: Shock
author_rank: Super Contributor
timestamp: February 06, 2021, 08:16:27 am
content: Think and Thing are two different words.Here is the model shown in the video:https://damsonglobal.com/cisor/Here is the mounthttps://damsonglobal.com/metal-mount/

author: Lord of nothing
author_rank: Super Contributor
timestamp: February 06, 2021, 10:05:06 am
content: Is there something else who have a better suction cup for mobile use?
heat sink clips other then goot - Page 1
Forum section: electronics / general

author: coppercone2
author_rank: Super Contributor
timestamp: February 01, 2021, 10:02:27 pm
content: I have a goot solder heat sink clip set, but I am wondering if there are any from other manufacturers that are decent or some how unique.

author: SG-1
author_rank: Regular Contributor
timestamp: February 04, 2021, 09:13:50 pm
content: Hemostats work fairly well, & come in many shapes & sizes.

author: coppercone2
author_rank: Super Contributor
timestamp: February 05, 2021, 02:50:50 am
content: aluminum hemostats?
Found this Genuine? Hakko 852 hot air station for sale - Page 1
Forum section: electronics / general

author: JonnyM
author_rank: Contributor
timestamp: February 03, 2021, 12:00:45 pm
content: I just found this NOS Hakko 852 station without the handle for 20€, sounds like a steal to me if it's genuine. You can get clone handles for 10€ from china. How are these pump style stations compared to the modern ones with fans? The static pressure is probably higher, but is the airflow and power comparable? It's 410W which doesn't seem like much.
is Atten ST-862D any good? - Page 1
Forum section: electronics / general

author: Porama6400
author_rank: Regular Contributor
timestamp: January 30, 2021, 10:40:29 am
content: is Atten ST-862D any good?I've been deciding whether if I should get Quick 861DW or Atten ST-862D, but it seems like there's no proper 862D teardown out there.so I am curious whether if anyone have a experience using it, and what do you think?thanks

author: cybermaus
author_rank: Frequent Contributor
timestamp: January 30, 2021, 10:06:19 pm
content: Not a teardown maybe, but surely you have seen Rossmann's video:https://youtu.be/wYCmU6jMLo8Or any of the many other video's out there?

author: thm_w
author_rank: Super Contributor
timestamp: February 01, 2021, 10:01:10 pm
content: You can find photos if you search:https://www.mydigit.cn/forum.php?mod=viewthread&tid=123382They even show internals in their own listings:https://www.ebay.com/itm/ATTEN-ST-862D-Hot-Air-Rework-Station-1000W-Whirlwind-20L-120L-Min-for-PCB-Repair-/254438420315What Rossmann says is probably right, if the $50-100 difference in price is significant for you, get the Atten.

author: Porama6400
author_rank: Regular Contributor
timestamp: February 03, 2021, 11:46:58 am
content: Interesting website, I've never seen that beforefor the seller image, their did not show the circuit board though? or do I missing somethingfor me, if 100 USD means better longevity, I'd gladly pay the difference though.
Omron relay sockets are hard to use, am I just an idiot? - Page 1
Forum section: electronics / general

author: thesmug
author_rank: Contributor
timestamp: February 27, 2021, 06:57:40 am
content: I recently got a bunch of Omron P2RF-05-S relay sockets, and they have push-in connectors for the wiring connections. I have ferrules (the ones with the little plastic shield on the back) for the connections, as you'd expect for a DIN rail component, but even a 14 gauge ferrule doesn't fit into the connectors. The little side ports where you're supposed to put a small screwdriver to release the connections for insertion and removal don't seem to open the springy parts enough to get even an 18 gauge ferrule all the way in. Once you get the wires in they immediately pop out. It seems like the connectors are actually meant for inserting bare wires, is that really the answer? Does anyone have experience with this particular style of push connection? It feels like I'm just not doing something right here. The push-ins do hold pretty well to bare stranded wire and their documentation shows that it's good for use with stranded, but it feels wrong that ferrules don't seem to work.

author: geggi1
author_rank: Frequent Contributor
timestamp: February 28, 2021, 01:49:32 am
content: You have to lift the spring before inserting the wire.Insert a flat screwdriver in the hole beside the terminal and you will see movement in the spring inside the terminal

author: thesmug
author_rank: Contributor
timestamp: March 01, 2021, 05:44:31 am
content: I still couldn’t get the ferrules to stay even when doing that.
Have my ESD mat been damage - Page 1
Forum section: electronics / general

author: buvikingen
author_rank: Contributor
timestamp: January 19, 2021, 09:54:47 pm
content: Hi eevblog forumI found out today that some isopropyl alcohol have spilt on to my rubber esd mat. I Know you are not allowed to clean a mat with this since it dries it out. Do you guys/girls think my mat have taken damage from the isopropyl alcohol. It have been laying on it for About 1-2 hours.Looking forward to your replies.

author: wraper
author_rank: Unknown
timestamp: January 19, 2021, 10:07:29 pm
content: No. What will really damage the mat over time is fat coming from your skin. It penetrates it and turns black bottom layer into soft gunk.

author: thm_w
author_rank: Super Contributor
timestamp: January 19, 2021, 10:09:11 pm
content: Its normal to clean ESD mats with isopropyl alcohol. Although you are right this company is claiming too much will cause issues:https://desco.descoindustries.com/DescoCatalog/Worksurface-Mats/Mat-Accessories-Cleaners/Reztore-Antistatic/10446/"Excessive use of alcohol-based cleaners may dry-out mats (vinyl or rubber) and degrade performance"If its not visually damaged I wouldn't worry about it. Also isopropyl I would expect to evaporate within a few minutes, not sit for hours.https://www.eevblog.com/forum/reviews/cleaning-rubber-esb-mat/

author: buvikingen
author_rank: Contributor
timestamp: January 20, 2021, 07:34:37 am
content: Thank you so much for your feedback. I ain't that consern anymore now. I Really appriciate your Help

author: paul8f
author_rank: Regular Contributor
timestamp: February 03, 2021, 11:36:54 am
content: I had a very similar question....My workbench had some very old mats that were failing the ESD test (the bonding to earth test was ok, but the static-dissipative test of the mat itself would fail... it showed up as insulative on the tester scale). Interestingly as an experiment I cleaned a small patch with IPA, and it passed...marginally.....).Has anybody tried the 'Reztore' mat rejuvenating spray that was linked above? I'm thinking that some products out there may very well clean the mat, but also reduce its dissipative qualities ....

author: Berni
author_rank: Super Contributor
timestamp: February 03, 2021, 01:59:33 pm
content: Isopropyl is fine for cleaning ESD mats.It might leech out some of the die and leave some color on the towel you use to clean it, so it might seam pretty alarming but it doesn't really leech enough out of it to matter. One thing i did find left a visible mark is 3D printer UV cure resin dripping on one, it seamed to pull so much die out of the mat that it turned from blue to a slightly greenish blue.For rubber objects like that its the oils that can really attack it. Also WD40 is known to slowly over time turn some rubbery materials in to a gross gooey mush.
Electroninks CircuitJet PCB printer - direct from Autodesk Eagle - Page 1
Forum section: electronics / general

author: Free_WiFi
author_rank: Regular Contributor
timestamp: January 24, 2021, 03:16:34 pm
content: This printer is not really good nor very,very bad ......By the way i should prefer the same printer,but with the laser etching of the photoresistive layer instead of direct inkJet-Circuit printing.
Shelly in Accesss Point mode - Page 1
Forum section: electronics / general

author: Datman
author_rank: Regular Contributor
timestamp: January 23, 2021, 09:25:25 am
content: Hi allI'm trying using Shelly i3 and Shelly 2.5 for switching two lights by their switches on the wall, only because a third wire doesn't go all the way into the flexible conduit in the wall. I don't need domotics.The problem is that I can't make it work using i3 or 2.5 as an access point, because I want lights working also if the router is switched off, removed or not working. Using one of them as an AP, on the PC I see the changing state of the switches on i3 and I can switch on/off lights by the PC on 2.5, but switches do not drive lights: I see commands from i3, I can send commands to 2.5, but commands by i3 don't drive the 2.5.Can you help me?ThanksGianluca
1.5" CRT viewfinders - Page 1
Forum section: electronics / general

author: steve30
author_rank: Frequent Contributor
timestamp: January 20, 2021, 05:17:36 am
content: I just got a load of professional CRT viewfinders off eBay. These are mostly 1.5" CRTs, so small enough to be cute, but big enough to be usable for something, unlike the 0.5" tubes found in consumer camcorders.I made a quick YouTube video showing inside some of them and I also give one a quick test.Just thought I'd post the video here in case anyone has any ideas for projects I could use them in or if anyone know any of the pinouts for them.

author: james_s
author_rank: Super Contributor
timestamp: January 20, 2021, 06:26:23 am
content: Those are totally cool, I love small CRT displays. I have one of those 0.5" ones you mention, it displays an impressively sharp picture but it is pretty tiny. What I'd really love to have is one of the rare color CRT viewfinders.

author: steve30
author_rank: Frequent Contributor
timestamp: January 20, 2021, 02:36:11 pm
content: I have a couple of the 0.5" ones on some Panasonic camcorders. They are impressively sharp for the size, but these 1.5" ones are much brighter and sharper still.

author: Gyro
author_rank: Super Contributor
timestamp: January 20, 2021, 04:17:07 pm
content: Back in the day, I often thought that those little CRTs (particularly the 0.5") would make a neat little handheld probe for something - a handheld scope, some sort of logic probe etc. Of course this sort of thing would have been hampered by magnetic deflection, and the eht being generated by the little line output transformer.
Charge current drawn by Pager in Charger cradle - Page 1
Forum section: electronics / general

author: ocset
author_rank: Super Contributor
timestamp: February 19, 2021, 09:40:40 am
content: HiWe have a Birdy WPS r3 pager which sits in a Birdy WP fast charger cradle. We are feeding the Birdy WP fast charger cradle 5V. Do you know what charge current it is spec'd to draw?. We are measuring it and its variable. We are trying to find the max charging current it could pull from 5V.Its made by TPL systems but their website doesnt say.https://tplsystemes.com/The charger cradle PCB has on it a chip called “LS2533”. This is SOIC8.I cant find the datasheet for it (only a datasheet for a SOT8 which says its an NiMH charger, which sounds right but ours is SOIC8)

author: jc101
author_rank: Frequent Contributor
timestamp: February 19, 2021, 05:30:28 pm
content: Let it run flat then pop it onto the charger. Give it a few mins then also trigger the pager. I'd have thought that would give the max draw?Or put a max hold meter on it and just see what the max is over a period of time.
Equipment time indicators - Page 1
Forum section: electronics / general

author: SeanB
author_rank: Super Contributor
timestamp: January 13, 2021, 06:17:37 pm
content: Found i have a pack of these 26VAC 400Hx hour meters still, never used, still in the waxed paper wrapping. Been sitting since 1976, but still likely work. I did have some running as hour meters, using a simple driver, one 555 timer, adjusted to 400Hz, running off 12V, and driving an old 400Hz signal transformer that had windings that would give a 26VAC output on the one set of leads. Capacitor of around 33n on the secondary to sort of filter to a sine wave, and then the clock connected. Ran for over 35000 hours before the clock itself failed, and I never actually replaced it with one of these spare ones.

author: BurningTantalum
author_rank: Frequent Contributor
timestamp: January 18, 2021, 12:34:49 pm
content: They must have been for aviation use.BT
TS100 budget alternative SH72! - Page 1
Forum section: electronics / general

author: rks96
author_rank: Contributor
timestamp: January 24, 2021, 11:36:22 am
content: When browsing AliExpress I found thishttps://www.aliexpress.com/item/4000802028365.html?spm=a2g0o.productlist.0.0.24fd7851qf5VUf&algo_pvid=c5b50624-6ed4-4ead-8eb4-b6a2023a4a99&algo_expid=c5b50624-6ed4-4ead-8eb4-b6a2023a4a99-0&btsid=0bb0623a16114377126995986ee4f6&ws_ab_test=searchweb0_0,searchweb201602_,searchweb201603_soldering iron SanErYiGo SH72 (less than 15$ including shipping) it looks surprisingly similar to Miniware TS100. All specs (Power, Vin ect) looks to be the same! Right now I don't plan on ordering it because I already have TS100, but, maybe someone else is looking for cheap soldering iron. If someone already owns one, please share your experience! Here is more information:https://hackaday.com/2020/01/27/review-saneryigo-sh72-soldering-iron/

author: Gyro
author_rank: Super Contributor
timestamp: January 24, 2021, 06:52:23 pm
content: I think the PINECIL is touted as the budget version of the TS100/TS80 but apparently very hard to find at the moment...https://www.eevblog.com/forum/reviews/pine64-pinecil-anyone-(dc-jack-usb-c-pdqc-soldering-iron)/The one you listed seems to be an analogue controller and potentiometer - no firmware (nothing wrong with that of course if you don't want to tune the control loop performance etc).The element looks to be a variant on the T5 / TS100 etc formats, but another new variant in mechanical detail.It would be interesting to see how it performs though.
KSGER T12 - new screen update? - Page 1
Forum section: electronics / general

author: alex-sh
author_rank: Regular Contributor
timestamp: January 15, 2021, 06:18:45 pm
content: Hello,Just found thishttps://www.aliexpress.com/item/1005001967033894.html?spm=a2g0o.productlist.0.0.5b31224e34IPSP&algo_pvid=2493cb04-4edc-4f83-83b1-24c5a3428562&algo_expid=2493cb04-4edc-4f83-83b1-24c5a3428562-16&btsid=0b0a182b16107342172218241eb39b&ws_ab_test=searchweb0_0,searchweb201602_,searchweb201603_Looks like Chinese updated the screen only?

author: totalnoob
author_rank: Regular Contributor
timestamp: January 15, 2021, 06:44:20 pm
content: I think this may be an entirely new board. It is set up for a JBC245 and not a T12. I wonder if they are using the STC based controller board that provides 3-way compatibility to the T12, JBC245 and JBC210? If you check out their site a little further, they have a more expensive, transformer based JBC245 compatible soldering station as well, now.

author: DavidAlfa
author_rank: Super Contributor
timestamp: January 15, 2021, 06:47:47 pm
content: Bah, only has a cheaper lcd instead the oled.
Ebay 800W AC-DC Adjustable SWPS.... Intended use???....... - Page 1
Forum section: electronics / general

author: Smokey
author_rank: Super Contributor
timestamp: January 12, 2021, 01:25:48 am
content: There are a bunch of sellers with similar adjustable power supplies on the ebays in the 500-1000W range. No part number, no data sheet.Here is an 800W example:https://www.ebay.com/itm/NEW-800W-0-100VDC-0-8A-Output-Adjustable-Switching-Power-Supply/173859863992$135+$45 ship = $180USDInteresting but minimal description spec:QuoteAnyone played with one of these?Any idea what they were intended for?Wonder what the output looks like.
uRLC Replica Notes - uRLC复刻笔记 - Page 1
Forum section: electronics / general

author: Free_WiFi
author_rank: Regular Contributor
timestamp: January 10, 2021, 10:15:41 am
content: https://oldgerman.github.io/845419ff/

author: thm_w
author_rank: Super Contributor
timestamp: January 11, 2021, 10:53:40 pm
content: Looks quite good.How long until someone sells a kit or finished product though? Maybe with nicer tweezer tips.
Pen/graphics tablet with display - Page 1
Forum section: electronics / general

author: MarkMLl
author_rank: Frequent Contributor
timestamp: February 01, 2020, 12:35:27 pm
content: I've recently acquired a graphics tablet with integrated "LCD-like" display, branded Newyes and supplied by Banggood and others e.g.https://www.banggood.com/NEWYES-10inch-bluetooth-Archive-Synchronize-Writing-Tablet-Save-Drawing-LCD-Office-Family-Graffiti-Toy-Gift-p-1446888.htmlIt's reasonably usable as a graphics input device under Linux with e.g. Gimp, and I presume would be at least as good under Windows for which drivers are supposedly available. I think it might be worth investigating by anybody who occasionally wants to get rough circuit diagrams etc. into a computer, and isn't used to using a pen-type device that doesn't leave any marks.Internally, there's a tiny PCB carrying a chip with markings laser-eroded, but there's traces of logo etc. which suggest that it might be from Realtek. Output is Bluetooth (untested) and USB, in the latter case appearing as 6161:4d15.MarkMLl

author: ilmanowar
author_rank: Newbie
timestamp: January 01, 2021, 01:03:17 am
content: Hello Mark,I am sorry to resume an old thread, but you are the only that gave me a little hope.Can you kindly tell us how did you get it working on Linux?All my attempts are failing.I have the same Id, but it has a different brand (it is common with chines products).Thank you very much.Best,Max.

author: MarkMLl
author_rank: Frequent Contributor
timestamp: January 05, 2021, 08:35:46 am
content: So far, as a directly-connected mouse-like device attached to an x86_64 running Debian Buster/stable. No success with Bluetooth. Trick was something like expanding Gimp etc. to full-screen (4K monitor) then finding where the tablet's corners are (rather smaller than the full area).It's better on Android to which it connects using Bluetooth with minimal hassle, but even on Linux it's useful for simple sketches particularly if (like me) one isn't familiar with a plain tablet.I'll make sure there's some charge in it so I can answer more detailed questions if necessary. Don't forget to charge the pen... haven't worked out how to change the battery in that when it eventually dies.MarkMLl

author: cdev
author_rank: Super Contributor
timestamp: January 06, 2021, 02:20:23 am
content: Are you sure the pen needs a battery?I have a wacom pressure tablet, a quite old and cheap Graphire tablet, and like most of the Wacoms the pen works without any battery. (Though there is no built in display, to draw on, sadly)It works great under Debian Buster too, however.Quote from: MarkMLl on January 05, 2021, 08:35:46 am

author: MarkMLl
author_rank: Frequent Contributor
timestamp: January 06, 2021, 08:50:07 am
content: Quote from: cdev on January 06, 2021, 02:20:23 amI don't care what you've got, this pen needs a battery.How do I know? USB socket in the end and a manual. Which I read >:-)MarkMLl
Thermal sensor - Page 1
Forum section: electronics / general

author: harrysmith
author_rank: Contributor
timestamp: January 01, 2021, 03:44:36 pm
content: Hi guys. which type of temperature sensor most used in electric control produces electric energy from a primary energy source (natural gas) ?

author: madires
author_rank: Super Contributor
timestamp: January 01, 2021, 04:12:08 pm
content: Usually an NTC, and for high temperatures a thermocouple.

author: bob91343
author_rank: Super Contributor
timestamp: January 01, 2021, 07:53:45 pm
content: I don't think they use bimetallic thermostats any more.

author: Doctorandus_P
author_rank: Super Contributor
timestamp: January 04, 2021, 12:46:27 pm
content: What is it you want to detect?The flame of the temperture?Some flame sensors detect the UV light of a flame.Old geisers used to have a thermopile that delivered enough current to keep a gas valve open when hot enough.

author: ace1903
author_rank: Regular Contributor
timestamp: January 04, 2021, 02:47:38 pm
content: Only thermocouple "produces" energy( it converts heat to electrical current), NTC, RTD UV, and others are passive.If you have many thermocouples you can power a small led or drive coil in a valve.Voltage is really small but the current can be significant.Not very efficient as a power source. Used rarely as a power source only in space missions in a special space vehicles.
XYS3580 DC Buck Boost Converter with a nasty overshoot - Page 1
Forum section: electronics / general

author: Paul Moir
author_rank: Frequent Contributor
timestamp: January 06, 2021, 05:25:47 am
content: https://www.ebay.com/itm/XYS3580-DC-DC-Buck-Boost-Converter-CC-CV-0-6-36V-5A-Power-Module-Adjustable-/133452975324I guess I was looking for the RD DPH3205 but missed. This similar looking and handy buck-boost converter has some interesting features and seems a little focused on battery charging. Turn-on characteristics were fine, but when I looked at recovery after disconnecting a load, there was a significant and prolonged overshoot which greatly limits the use of this supply.These were taken with a 9V supply. Increasing it to 20V helped by 2/3rds but still that's a lot of overshoot. First is a 15V turn-on. Second is the overshoot when a 15 ohm load gets disconnected. 7V overshoot is not great. Next is 5V with 0.7A being disconnected, which should not be very taxing but is. Finally I thought maybe it just needed a continuous load to dump some power into, so the last shot is the same as the second but with 10% continuous load added. Still a pretty tall and long overshoot.The overshoot isn't so bad with small current steps, but that's hardly a compliment. I hope they get the regulation under control because this wouldn't be so bad if it weren't for this. It's fine for battery charging but little else. I intended it for a handy portable 24V supply for testing industrial devices but I don't think it'll even be suitable for that. It produces the same spike when going from CC to CV so if you say accidentally short the leads, the device is going to get hit with a ~36V spike.
Source for used lab items like a magnifying lamp? - Page 1
Forum section: electronics / general

author: casterle
author_rank: Regular Contributor
timestamp: December 27, 2020, 08:46:16 pm
content: I'm in the market for a magnifying lamp with a long reach and a glass or hardened lensthat will stay where I put itfor as long as I want it to remain there.I've used many varieties over the last few decades, but have never found one that works worth a damn. I bought a neatfi unit a few months ago whichdoesstay in place, but I've already managed to scratch its soft acrylic lens.Of course my problem was that I never had the money to invest in a quality instrument. That limitation persists, and I doubt I will find something new that I would be willing to invest in, although I've looked in the usual places.It seems there must be at least one company who buys used equipment as labs and companies come and go.Would some kind soul point me to such a company? Extra Karma if I find what I'm looking for!
Data transmission - Page 1
Forum section: electronics / general

author: harrysmith
author_rank: Contributor
timestamp: January 02, 2021, 01:44:13 pm
content: Hi guyswhat is the type of data transmission at industry level from the central (sensor.regulator.actuator) to the control room?. Thanks

author: elekorsi
author_rank: Regular Contributor
timestamp: January 02, 2021, 06:35:53 pm
content: well, you will need to be a bit more specific on that one...it's like asking: "What type of tress grow in the woods?"It took me 5 seconds to google that:https://en.m.wikipedia.org/wiki/List_of_automation_protocols

author: harrysmith
author_rank: Contributor
timestamp: January 02, 2021, 07:49:07 pm
content: I meant to transmit data from a sensor or detector (fixed; industrial) in the operating room of a factory it does not use wifi or blotooth. it is a radio! but what type of radio is used ??
Expertise equipment - Page 1
Forum section: electronics / general

author: skYfIrE
author_rank: Contributor
timestamp: August 25, 2020, 04:35:05 pm
content: Hi EEV community,I'm looking for equipment to make expertise in Europe :- metallographic cutting machine,- polishing machine,- microscope with integrated camera to take pictures and transfer them directly in a computer.Do you know who can supply this kind of laboratory equipment ?

author: KrudyZ
author_rank: Frequent Contributor
timestamp: August 26, 2020, 05:29:43 pm
content: expertise:nounexpert skill or knowledge; expertness; know-how: business expertise.a written opinion by an expert, as concerning the authenticity or value of a work of art, manuscript, etc.In other words, it's not clear what you are after...

author: CatalinaWOW
author_rank: Super Contributor
timestamp: August 26, 2020, 05:35:21 pm
content: Are you asking for advice on best suppliers for these types of machinery in Europe? Best based on what? Availability, cost, support, quality or ?I doubt that I will be of any help on the answers, but a clearer question may get you more help from those who can help.

author: coppercone2
author_rank: Super Contributor
timestamp: August 27, 2020, 07:48:04 am
content: Polishing machine - something that uses lapping platesmetalographic cutting machine - precision diamond saw that likely has a low blade life but cuts a nice polished surfacemicroscope - i dont knowI imagine the polishing/cutting machine = how many steps do you want to have between cutting a metal sample and having it polished for acid etch? They used to do this by hand. Now you have machines with spinning expensive lapping plates that do it automatically.They have autolap machines with a camera that measure surface finish in Ra with a camera and report it back IIRC, but 2nd hand plates are like 1000$?https://www.lapmaster-wolters.com/lapping-plates-and-polishing-plates.html

author: skYfIrE
author_rank: Contributor
timestamp: December 24, 2020, 05:58:51 pm
content: Hi to all,Polishing machine for laboratories is used after you've cut one to get a mettalographic cut :Grinding machine for labs :Best in class is High Quality with a LCD screen and some options to cut automatically the parts and you don't need to spend your time in front of the machine during the operation. This kind of equipment is expansive yes but the price isn't an issue.I've found PACE Technologies in USA but they can't ensure the technical support in Europe.Batronix or Butterfly, they don't resell this kind of lab equipment

author: eKretz
author_rank: Frequent Contributor
timestamp: December 25, 2020, 06:42:41 am
content: Buehler hands down. They make some grade A gear and specialize in metallography equipment.https://www.buehler.com/

author: skYfIrE
author_rank: Contributor
timestamp: December 25, 2020, 08:19:52 pm
content: Thanks eKretzI'll contact them, their products look like best in class gear.Have happy Christmas
Yihua 908D review + teardown - Page 1
Forum section: electronics / general

author: VEGETA
author_rank: Super Contributor
timestamp: December 24, 2020, 07:11:23 pm
content: Hi guys,some days ago I did a review and teardown of my Yihua 908D soldering station that I like and think it is cheap and good as a beginner soldering station. Here is the video:I hope you enjoy it.Next teardown is about a good RGB SCART to component YPbPr converter + some explanation about its circuitry. kindly inform me if you are interested.best regards!
Are "shaped" hot air nozzles good for inital reflow or just removal? - Page 1
Forum section: electronics / general

author: MRiddickW
author_rank: Contributor
timestamp: December 17, 2020, 07:02:10 pm
content: Hi all,I'm getting ready to make the plunge on a hot air rework station (Quick 861DW). Mostly for general repair/rework, but also for installing two SMD parts onto PCBs for my dad (low qty/year, but just enough to be annoying to solder manually). These ICs will be a TQFP-48 package and an SSOP-28 package. Would it be worth it to get a 10mm x 10mm (NK3125) and a 7.5mm SOP (NK3134) for these, or am I just as well off with using a smaller nozzle and flowing it as shownhere?Thanks!

author: coromonadalix
author_rank: Super Contributor
timestamp: December 17, 2020, 08:23:12 pm
content: Having a good paste will help and liquid flux tooI dont see any problems with theses adapters, in time with experience and practice you'll get tthe gist of it.The important thing for me, is not to overheat the part(s)

author: S. Petrukhin
author_rank: Super Contributor
timestamp: December 20, 2020, 01:53:53 am
content: Soldering with hot air without heating the board is not very good - you create thermal stresses because the air takes a long time to melt the solder. TQFP-48 it is easier and faster to solder with a soldering iron, especially with a BCM2 tip.
polariser for microscope light ring - Page 1
Forum section: electronics / general

author: richnormand
author_rank: Unknown
timestamp: December 17, 2020, 11:00:58 pm
content: Seen a few comments here about reading markings on chips with side lighting and I do have a nice IKEA LED gooseneck light for that purpose but it is a pain to work around so I decided to try something easier.Made a simple clip-on ring on the light ring that is friction held and can be turned to the optimal position. It is also straightforward to remove but I find that I leave it on all the time.The holder was done with a standard 3D printer to match my fiber light ring and hold the polarising film against the light source. The two side tabs are friction fit to the sides and act as handles to rotate the assembly.First, photo shows the arrangement.Second, photo is how it fits.Third, photo normal lighting.Fourth, with polariser.I am also waiting for a good camera lens polarising filter of the right diameter to add at the objective input to increase the contrast further. A trial with a film polariser in the optical path messed up the image sharpness too much. That is less relevant for the light ring of course.But as a an easy mod this first step works better than I thought it would.Cheers.