hybridfree/eevblog-posts huggingface dataset:
Need Converter for 13V5 to 13V5 at 25W, isolated - Page 1
Forum section: electronics / general

author: Faringdon
author_rank: Super Contributor
timestamp: February 03, 2022, 01:05:46 pm
content: Hi,Does anyone sell an offtheshelf isolated converter to get from 13V5 input to 13V5 output at 25W?Or if not, then what about as above, but with 15V input, or 24V input?

author: Ian.M
author_rank: Super Contributor
timestamp: February 03, 2022, 01:34:52 pm
content: TDK-Lambda have some models with 10% trim range. Trim a 15V output one down 10%.

author: HumbleDeer
author_rank: Contributor
timestamp: February 05, 2022, 03:41:28 am
content: What about using a standard isolator, and perhaps a convertor afterwards? It's inefficient but might be easiest depending on your case.
Looking for Electrical schematic tools, Eplan type products - Page 1
Forum section: electronics / general

author: WattsThat
author_rank: Frequent Contributor
timestamp: February 02, 2022, 03:24:05 am
content: I’m looking for pc software for creating electrical schematics/wiring diagrams. I cannot afford Eplan but would like some of that type of functionality.A member here posted a link to IIRC, an open source product that is a Eplan type knock off. The UI wasn’t the best but it looked good for the price. I’ve lost the link and cannot remember the name and for the life of me, I cannot find it with the usual search engines. TIA.

author: johnboxall
author_rank: Unknown
timestamp: February 02, 2022, 03:51:17 am
content: https://alternativeto.net/software/eplan-electric-p8/?license=free
weller-hot tweezer , caution of use - Page 1
Forum section: electronics / general

author: sundancedk
author_rank: Newbie
timestamp: January 31, 2022, 10:03:06 am
content: I post this information on debugging a weller-hot tweezer, because having this issue is severe.Weller WXMT MS 2 x 40 W/12 V , Label marked “2019” inside the black part of hot-tweezers.Background:Visually saw sparks at tweezer tips using weller-hot tweezers passively.Later found damaged ICs on boards worked on, caused by this fault.Inspection/disassembly of the black part of the device:Severe errors found.1. Right tip: GND connection outer shell disconnected (cold solder)2. Right tip: Red wire (live DC) can touch other net3. Left tip: Red wire (live DC) can touch other netrecommend all users to inspect own device and make sure to fix these obvious design errors – so it can use it with confidence of not damage components on the board being worked on.It seems errors have caused injection of 12V, on location de-soldered ☹, including voltage rails.To provoke intermittent error it was needed to make movements of tweezer.I hope to see Weller correct this design.Images to explain attached.Br Sundance_DK

author: cgroen
author_rank: Unknown
timestamp: January 31, 2022, 12:52:45 pm
content: Thanks for heads up!I just opened mine to be sure, seems to be ok:

author: sundancedk
author_rank: Newbie
timestamp: January 31, 2022, 01:37:18 pm
content: super, at least you are sure now
JBC AD2490 station - trying 210 handle " wrong tool " ? - Page 1
Forum section: electronics / general

author: KD0CAC John
author_rank: Frequent Contributor
timestamp: January 29, 2022, 11:37:29 pm
content: Been soldering for decades , have JBC , Metcal , Hakko .Have had others also .Bought an older station , AD2490 with 245 handle , maybe 10+ yrs ago , no problems .With stuff getting smaller and having added a Amscope stereo microscope some yr ago , wanted to get smaller tips - so bought a 210 handle and a knife blade tip to start --- station says " wrong tool " , tried to go down the programing of station to changing handle --- does not seem to have any options - guessing maybe station is older that 210 handle ?

author: thm_w
author_rank: Super Contributor
timestamp: January 31, 2022, 10:48:53 pm
content: Google for "AD2490 JBC" finds nothing, its probably so old it doesn't support T210."T210 Precision Handle can work with DIU, DDU and DMU Control Units by using ADS Stand and, additionally, with CDS, CDB, CDES and CDEB stations."https://www.jbctools.com/t210-precision-handle-product-48.html
Metcal MX-5200 - how powersave mode work - Page 1
Forum section: electronics / general

author: Pablo20
author_rank: Newbie
timestamp: January 28, 2022, 09:30:49 pm
content: HiRecently I have metcal mx-5200 and don't know how powersave mode work on this unit. One or two times the unit goes to the powersave mode but for most time I use it, does not switch to powersave mode. I have set powersave mode time to 10min but no results. I use stand with standby mode (with two magnets). I tried with different tips but no results, sometime switch to powersave mode but most of time no. My qustion to metcal users how it works or how is it at yours? Thanks for any information.

author: thm_w
author_rank: Super Contributor
timestamp: January 28, 2022, 10:49:05 pm
content: When you have the iron sitting in the holder, how much power is it showing on the screen is being used?Maybe its spiking above the level that it thinks is sleep mode, and resetting the timer.I should be able to test mine tomorrow.https://assets.testequity.com/te1/Documents/pdf/toolsandsupplies/MET-MX-5210_manual.pdfhttps://www.eevblog.com/forum/reviews/metcal-mx-5200-and-mx-5000-firmware-and-data-eeprom-information/

author: Pablo20
author_rank: Newbie
timestamp: January 29, 2022, 09:11:54 am
content: HiThanks for your reply.I have observed that when I put the iron on stand and power rest on level 5 and is stable 5 then unit go to the power save. This is the case when I use SMTC-004 and STTC-817. Otherwise (rest of tips) power level in stand mode keeps going about 1to 2 and powersave mode not go on. Maybe it is e reason this situation? Maybe magnetic field on stand is to weak? Please try on your unit with results...it looks likehttps://youtu.be/hHRHHwaOnFU

author: thm_w
author_rank: Super Contributor
timestamp: January 29, 2022, 11:35:29 pm
content: I set a timer for 10min, put the iron in the stand, it did not sleep after 10min. But after about 15-20min it eventually did, tried twice.Power was same as yours, stable at 05.In that thread above, someone speculates that the updated firmware "corrects sleep error", but its not clear what that is.Mine is v1.36.

author: Pablo20
author_rank: Newbie
timestamp: January 30, 2022, 01:10:59 pm
content: Ok, thanks for information. I think I solved problem. I disassembled the stand, cleaned magnets (a lot of filings and other crap) and decreased gap. Ready mode is at 05 level on all tips and powersave mode starts. Additionaly I think that if was 05 level I didn't wait long enough. I have observed like you, that is not exactly 10min but a little more (16-17min). Earlier i updated firmware from 1.36 to 1.37 but it didn't help, so I think not worth it. I have mounted DS1305 too because I thinked that time not goes on but it wasn't the reason, so at least I have actual time on station after power on. Thanks for your help and your observation.
TUYA ZiggBee WiFi gateway plus temperature + humidity sensor = A LOT of Problems - Page 1
Forum section: electronics / general

author: max-bit
author_rank: Frequent Contributor
timestamp: January 23, 2022, 08:32:05 am
content: I have purchased a set:TUYA ZiggBee WiFi gateway plus temperature + humidity sensor.Everything came together nicely ... and now the problems started ...1. The device will not read the temperature at night (no one knows why) a hole appears around 6h and it varies (probably only the device knows why ?) between 9 PM/23PM to 3 AM/5AM then the data is not read? There is no such option anywhere in the settings, and so every day.2. Suddenly, the device stops reading data from the T&H sensor (they are not shown on the graph), nothing is monitored that the device has lost communication (according to the device - connection status is on), but the data is not refreshed (also on the graph).It's honestly crap.Has anyone had similar problems with ZigBee devices? Maybe it's a conflict with WiFi? I don't know, but it shouldn't matter?Well, you can always say that it is a damaged device. But somehow I do not think so strangely and I would rather bet on terrible software?

author: PlainName
author_rank: Super Contributor
timestamp: January 26, 2022, 08:00:59 pm
content: Got that setup here. I don't check the temperatures or humidity (other than what's on the device display) but when I have in the past there is a definitely a period around midnight when it won't show any history. I put that down to stats being reset at 00:00 and there needing to be a minimal set before it will return anything.(This is using the Tuya app, BTW).My main use for it is to turn on the aircon (also using the zigbee gateway to an IR transmitter box) when the temperature drops to around 12C. So far as I can tell, that hasn't failed to trigger yet - sometimes it doesn't trigger when I think it should have (the place if very cold in the morning) but on checking the logs it's still 0.2C or something above the trigger value.
Which version of KSGER T12 should I buy?  (re: 2.1S vs 3.1S) - Page 1
Forum section: electronics / general

author: sofakng
author_rank: Regular Contributor
timestamp: January 21, 2022, 02:47:30 pm
content: I'm looking to "upgrade" from my Hakko FX888D to a T12 system so I'm looking at the KSGER T12 irons.It seems like the latest two versions are 2.1S and 3.1S.It looks like there are several different revisions of the PCB and some of the newer ones are worse?Also, are there any differences between the handles?
Looking for review/specification of DC DC converter module ZS-Q5A 200W 15A 60V - Page 1
Forum section: electronics / general

author: This_Guy
author_rank: Newbie
timestamp: January 21, 2022, 10:27:41 am
content: Hi,I am looking for a module capable of converting 33.6Volts(8 * 4.2Volts cells) to 12Volts@12AmpI found a module at local market , model ZS-Q5AThis video reviewis in Russian so I can't understand it, but its converting from 32Volts to 12Volts@10Amp and not getting hot.So far I found:Input 10..60V , Output 1..36Output current : 10A (15A maximum)Appears to be using IC LT38xx (from top side board picture)Switching frequency: 180Khz (LT3800 is 200Khz)Maximum Efficiency: 94%If someone can get more info out of that video review or somewhere else, many thanks!The SZBK07 module is also "suitable" for the task, but I found a bad review of it on youtube, if someone has experience with this module, information would be helpful.

author: tunk
author_rank: Super Contributor
timestamp: January 21, 2022, 11:21:25 am
content: Quote from: This_Guy on January 21, 2022, 10:27:41 amIs this any help: You can switch on subtitles and then Autotranslate them to e.g. English.

author: thm_w
author_rank: Super Contributor
timestamp: January 22, 2022, 12:22:55 am
content: https://www.mpja.com/download/36626ps.pdfNeeds a fan above 100W. I don't think the russian guy ran it long enough for the temperature to stabilize?I personally would buy a 10A rated device to run at 12A.SZBK07 looks like a properly rated board for the task:https://www.mpja.com/Adjustable-12-36V-DC_DC-300W-15A-Buck-Converter/productinfo/36625%20PS/Note the review here says you need to tighten down the heatsinks, and may want a fan as well.
900Mhz serial radio (MDR292A) - stops transmitting after x number of chars. Why? - Page 1
Forum section: electronics / general

author: flyingfishfinger
author_rank: Contributor
timestamp: January 19, 2022, 05:46:48 pm
content: Hi,Not sure if this is the correct forum but I'm hoping for some takers. I recently picked up a pair of old Blackbox MDR292A RS232 radios in an effort to get some data through a couple miles of forest. It's a tall order, but I'm having issues just getting them set up.They "work" in that I can type text back and forth between two serial terminals, but if I try to send a bulk transfer (i.e a raw file through the serial terminal) the data stream stops in the same place every time.The radios are right next to each other, so I doubt bad signal is an issue. The configuration tool only lets me adjust a handful of settings (hardware handshaking from host to modem, but NOT flow control OTA; full / half duplex, baud rate and number of retries on packet error) which I've been through to no avail.The weird part is that for sending the same file, the data transfer always stops in the same place regardless of what baud rate I choose so it does NOT seem like a buffer overflow issue.The company still exists, but stopped making this modem about 10 years ago so they don't have much expertise left. I do have the manual which doesn't quite go into all the details one could want, so it's also not very helpful. Apparently it also supports some set of AT commands which the manual doesn't mention (but the configuration tool has a tab for).Does this sound familiar to anyone?Cheers,R

author: thm_w
author_rank: Super Contributor
timestamp: January 20, 2022, 10:26:31 pm
content: What are you using for a RS232 connection, cheap USB adapter or physical port?After how many bytes does it stop? You tried another file right.

author: flyingfishfinger
author_rank: Contributor
timestamp: January 20, 2022, 10:40:12 pm
content: Hi,I actually semi-solved this, I thought I deleted the topic.I'm using Prolific USB-serial adapters. Enabling hardware flow control improves things by quite a lot, I actually succeeded in loading some basic websites using Lynx & ppp protocol over the link. It's still extremely slow for that (~1 kB/s??) and I'm not sure where the issue is, but at least it works consistently.R

author: thm_w
author_rank: Super Contributor
timestamp: January 20, 2022, 11:05:41 pm
content: Counterfeit adapters exist, but yeah either way you'd need flow control if you are transmitting at a greater rate than the system is capable of achieving.They say RF data rate is up to 76.8kbit so 10kB/s would be the maximum speed you'd see with a good connection.

author: flyingfishfinger
author_rank: Contributor
timestamp: January 20, 2022, 11:47:32 pm
content: Adapters seem fine as far as I can tell. These radios require true RS232 voltages and the adapters work so I'm assuming they are OK. For the datarate, there's TCP & PPP overhead so maybe it's working as it should be.I'm going to try SLIP as well to see if it reduces the overhead meaningfully enough to increase the speeds a bit...R
Quick 861DW - switch to Celsius mode - Page 1
Forum section: electronics / general

author: dctech3
author_rank: Newbie
timestamp: November 09, 2019, 12:52:53 pm
content: Anyone know how to switch the Quick 861DW hot air station to Celsius mode? User guide no help. Mine is in Fahrenheit mode, and it is buggy.See video

author: sn4k3
author_rank: Frequent Contributor
timestamp: November 24, 2019, 07:25:57 pm
content: Hold down channel 2 and 3 for a few seconds. It'll switch from F to C1 and 2 un/mute beeps

author: Serge125
author_rank: Regular Contributor
timestamp: May 22, 2021, 10:13:36 am
content: Hi there I have tried to change it too from C to F but the 2-3 buttons doesn’t work for me. The 1 button for sound works though. Is it possible that they made it permanent or they have change how to do it. Any update to this is welcomed!!!!

author: SanDiegoHB
author_rank: Newbie
timestamp: January 18, 2022, 11:01:11 pm
content: Hello, found this thread and it helped me. 2 & 3 worked for C/F. The unit was asleep, it was really particular about how precise I was about pressing them simultaneously, and it didn't matter if I just saw dashes on the display or a temperature
X-Soldering pro not working whith origijal JBC tips - Page 1
Forum section: electronics / general

author: dmendesf
author_rank: Frequent Contributor
timestamp: September 03, 2021, 04:32:57 am
content: I got a X-Soldering pro from aliexpress and a few original JBC tips (240 and 210) but both doesn't work. When the probe rests it says "power down mode" and shows the ambient temperture (probably wrong). When I pick it up it gives an error and does`t heat up. Any hints?

author: thm_w
author_rank: Super Contributor
timestamp: September 03, 2021, 09:44:49 pm
content: Did it come with any tips, do those work?What error is displayed?

author: dmendesf
author_rank: Frequent Contributor
timestamp: January 16, 2022, 12:37:05 pm
content: Reviving my (own) old topic. I bought a X-Soldering pro at Aliexpress and asked a friend to buy original JBC tips in USA. When both arrived I tested the station and it didn't work: probes where recognized while the handle was at the basebut as soon as I take them out it tries to heat up but fails:If I return the handle to the base it doesn't return to work:Only way to make the station recognize the probes again is power cycling. The most incredible part is that a few days later I tried again and the station worked wonderfully.... and now it stopped working again, same syntoms. Any ideas? I think it may be noise injected from ground pin... will disconnect it and see wha happens.

author: thm_w
author_rank: Super Contributor
timestamp: January 17, 2022, 09:32:02 pm
content: Do you have a properly earth grounded outlet?

author: dmendesf
author_rank: Frequent Contributor
timestamp: January 17, 2022, 10:31:12 pm
content: Yes I do have a proper eath ground. Lifted it and nothing changed. I did more tests today and think the problem is different: I used another station to heat the 245 and 210 tips and the X-Soldering pro showed the increasing temperatures. Seems it's not driving power thru the tips to heat them and shows the error sign when the integrator error (from PD/ PID controller) saturates.
KSGER T12 v3.1 unstable temperature with certain tips - Page 1
Forum section: electronics / general

author: Chima
author_rank: Newbie
timestamp: January 17, 2022, 07:36:55 pm
content: hello, first off I know the issue with temperature instability has been talked about before.in my experience specifically with 2 tips, i assume what's happening is that the temperature overshoots, the station stops power to let it cool down, but it doesn't start power until it is well below the set temperature, causing it to overshoot again and do the same thing.i have already read around the forums, and as far as I know, the solution was to add some kind of fast recovery diode across the heater to alleviate a negative voltage spike.However, that solution was for v2.1 boards and it seems it has already been implemented in v3.1 boards in the form of D1, but it doesn't seem to work as you can tell.It's likely that there is a solution for the problem on v3.1 boards hidden in the forums, meaning I didn't read far enough.Or im just dumbNotestips I'm actually having this problem with:KSGER: T12-BCM2Hakko: T15-D12I am using theoriginalfirmware
LEP (Laser Excited Phosphor) Lights - Page 1
Forum section: electronics / general

author: IdahoMan
author_rank: Regular Contributor
timestamp: January 17, 2022, 09:54:01 pm
content: What does everyone think of LEP (Laser Excited Phosphor) lights, such as used in flashlights?Looking at the flashlights that use LEP, they are ludicrously overpriced. There is a thread about them here:https://budgetlightforum.com/node/74482

author: Gyro
author_rank: Super Contributor
timestamp: January 17, 2022, 10:17:15 pm
content: mikeselectricstuff (forum member) did a video on its use in BMW headlamps...
HAKKO UK soldering equipment and incorrect plugtop fuses - Page 1
Forum section: electronics / general

author: 6SN7WGTB
author_rank: Regular Contributor
timestamp: January 15, 2022, 07:03:22 pm
content: Just acquired a HAKKO soldering station and a desoldering tool. Excellent products.Both have flexes which are 0.75 sq.mm., under 2m and fitted with a rewireable (i.e. not moulded) 13A 3-pin UK plug.The issue I have is that they've been fitted with a 13A fuse.As I understand the UK regs, a 13A fuse is ONLY acceptable on such a csa flex IF it is under 2m (which it is) and the plug is NOT rewireable/moulded (which it is).Tried emailing Hakko on both items but no response.Perhaps the devices have protection inside for the gubbins, but he fuse rating is incorrect and should be 3A (station and desoldering tool are 70W and 110W resp).Anyone else come across this or have a contrary view?My suspicion is that these are actually produced for the EU market and HKWentworth UK cut the EU plugs off and wire UK ones, but missing the need to change the fuse.For 0.75 sq.mm flex:"This has an allowable rating of 6A, except "Where manufacturer’s flex is less than 2m in length, has a csa of 0.75mm2 and is fitted with a non-rewirable plug, it may be rated at 10A and be fused to 13A, in accordance with BS1363 Table 2 note C." - IET Code of Practice, Page 133."

author: armandine2
author_rank: Frequent Contributor
timestamp: January 16, 2022, 03:52:46 pm
content: Looking at my Hakko FX-888D bought a couple of years ago and the FR-301 bought a couple of months ago, I share your suspicion regarding the cable cutting practice.
Please help: inner diameter of the 14ST and 30/40ST JBC tips  - Page 1
Forum section: electronics / general

author: hve
author_rank: Regular Contributor
timestamp: January 10, 2022, 11:35:19 am
content: Dear Eevbloggers,Can anyone help with measuring the diameter of the heating element for 14ST and 30/40ST tips could not find this in the specification...I have a very old JBC Littemagic possibly 1980's model sodering station which has served me very happily ever since.The diameter of the heating element is 4.0 mm, as far as i can tell the 14ST or 30/40ST tips could match, depending on the inner diameter of the tips.Kind regardsHenk

author: RayRay
author_rank: Frequent Contributor
timestamp: January 10, 2022, 06:47:05 pm
content: I've looked up "JBC Littemagic" and couldn't find anything useful. What's the actual model number?
12V Accu Charger, Switch,...? - Page 1
Forum section: electronics / general

author: Lord of nothing
author_rank: Super Contributor
timestamp: January 02, 2022, 03:27:48 pm
content: HiMy Heater run on 12V for Control Device. There should be no power loss or the get into an emergency cooling mode after the power get "restored".Can someone recommend an HW who can charge an Accu maybe good "old" Led Accid Accu who get use by an UPS?When there is an Mains 12V Supply the should charge the Accu and deliver the needed power to the heater and when the Mains get cut (or I have to unplug them) the should switch like an UPS immediately to the Accu.I dont know if some of the off the shelv think can do?!Thanks

author: Gregg
author_rank: Super Contributor
timestamp: January 02, 2022, 06:58:59 pm
content: I assume that the control needs 12V DC or is capable of using DC.For an off the shelf plug and play unit, Belkin residential gateway battery backup should work for you.I have one for my internet connection that I found cheap on fleabay and purchased a new sealed lead acid battery for it.https://www.belkin.com/us/support-product?pid=01t80000001zrPYAAY

author: Lord of nothing
author_rank: Super Contributor
timestamp: January 02, 2022, 07:43:52 pm
content: sound good but not sell in my Region.I guess you mean something like this:https://www.eaton.com/de/de-de/skuPage.3SM36.specifications.htmlSadly I need something with more juice. The Heater need some power especially when the start up and the Glowplug run.

author: Gregg
author_rank: Super Contributor
timestamp: January 07, 2022, 01:09:05 am
content: The Eaton unit you listed shows the battery capacity as 2200mAh, which may not be enough time for your controller during an extended outage. The website does show a run time graph which may tell you if it will work in your situation.You might consider a DIY approach using a lead acid 12V battery and a power supply that can float the battery at 13.2V to 13.3V and occasionally raise the voltage to 14.5V for a few hours every couple of weeks. A number of marine rated battery chargers use this method to keep boat batteries from degrading when not in use. An automotive battery that doesn’t have quite enough capacity for winter starting could be repurposed in your situation giving days of backup.
Fluke TL40 or (Pomona 5953)  vs. probemaster - Page 1
Forum section: electronics / general

author: Jester
author_rank: Frequent Contributor
timestamp: January 03, 2022, 09:17:58 pm
content: I keep reading about how great the Probemasters are, so I'm tempted to order a set.I would like to hear comments from anyone that has both the Fluke TL40 probes as well as the Probemaster set. Which set do you prefer?Of all the DMM probes I have used over the years, I really like the TL40. I'm not a fan of any of the big tip probes, I just find them way too clumsy for most SMT probing, I also don't like overly thick probe handles as too often you need to get the probe in a tight spot where there is not enough space for the big body handle. The TL40's also allow you do extend the tip when the access is really narrow. The one advantage I do see to the probemasters is the gold flashing.

author: THDplusN_bad
author_rank: Regular Contributor
timestamp: January 11, 2022, 06:33:12 pm
content: Good Day,I cannot comment on the probemaster probes, but I can truly recommend the Tektronix/Keithley 1756 probe set. Overall good quality and a good set of probes, and even the needle probes are 1000V/CAT III rated. They are discontinued and are offered at low prices now. I was lucky and got mine for 20 €...https://www.farnell.com/datasheets/2166977.pdfCheers,THDplusN_bad

author: RayRay
author_rank: Frequent Contributor
timestamp: January 11, 2022, 08:29:26 pm
content: I can't comment on either, however, I do have some suggestions!I use these probes (with thin needles) on a regular basis and find em to be excellent, way easier to work with than regular ones:https://www.aliexpress.com/item/1005001579018307.htmlAlso, these attachments are good for tighter spaces:https://www.aliexpress.com/item/32968524113.htmlhttps://www.aliexpress.com/item/4000025486949.htmlhttps://www.aliexpress.com/item/1005002715536138.htmlYou'd need 4MM>4MM banana cables for em, and if you don't already have such, then I'd recommend these silicone ones:https://www.aliexpress.com/item/4000065051551.htmlThese would serve you well, and at reasonable costs!
On our own amplified stethoscope - Page 1
Forum section: electronics / general

author: abdulbadii
author_rank: Frequent Contributor
timestamp: January 03, 2022, 11:05:48 pm
content: How do we make our own electronically amplified stethoscope?

author: SilverSolder
author_rank: Super Contributor
timestamp: January 06, 2022, 04:43:36 am
content: Hmmm a small microphone in the tube of a regular stethoscope, and an audio amplifier?
Weller WT1012 question - Page 1
Forum section: electronics / general

author: BreakingOhmsLaw
author_rank: Frequent Contributor
timestamp: January 05, 2022, 11:45:59 pm
content: Hi, does anyone own a Weller WT1012 soldering station and can tell me if the stand can be adjusted to have the sponge face forward?Putting it behind the stand seems to be industrial grade stupidity to me. Why on earth would you design it like this? Surely it's very awkward and clumsy to reach.Thanks in advance.
Controller for Weller RT Tips, a cheap solution - Page 1
Forum section: electronics / general

author: Martin72
author_rank: Super Contributor
timestamp: December 05, 2021, 03:48:21 pm
content: Hi,More and more I needed a soldering iron for smt work - Google doesn´t bring the results I´ve hoped for, a cheap solution..At work, I´ve got a complete Weller WX-2 Enviroment, with wrmp iron, the tweezers, a 200w iron and the wmrp for the direct heating RT tips.Works best but the price...Station and handle will cost appx 700€, way too much.While the RT tips are quiet affordable...For some reason I´ve looked for new tips for work and stumble over several articles on how to use the RT tips without the weller station...Fascinating.There are some projects outside, I was starting to gather more information about.And then...Saw an offer in ebay, a complete controller for the RT tips...Without holder and cable but when you ask the guy, it will be delievered with the controller - In my case without more costs.After only 3 days the package arrived.The controller in a very tiny, 3d-printed housing, the holder and the cable for connecting the RT-tips to the controller.Additionally, a 12V/4A supply is needed, I got one at home.Grab some RT-tip types from work, test it....Works good !Controller software is very simple, you can adjust the desired temperature and that was it, no memory places or anything else.But I don´t need anything more, just wanting to solder something.This thing costs about 70€ incl. shipping - 10times less than a weller original, plus a 12V supply and 20..27€ for every RT-tip you need.Excellent!OK, building quality is not top of the edge, the standby function could be more polished (just a uninsolated cable)....but hey, the price is hot.I´m quiet confident with it.MartinControllerAlso he offers a "handheld" version:second linkPics see attachments.

author: pitfermi
author_rank: Contributor
timestamp: December 05, 2021, 09:01:59 pm
content: Seems good. I have built one according to this:https://github.com/FlyGlas/WMRPWorks just fine. F*ck overpriced weller stuff though..

author: trp806mo
author_rank: Regular Contributor
timestamp: January 05, 2022, 11:00:54 pm
content: I bought one too and it does the job. I added an old weller stand, external power supply and two 3.5mm jack audio (all for 0 buck) so less than a JBC (NT115, 210) clone in Alli.
Why Temperature Lockout Exists? - Page 1
Forum section: electronics / general

author: PixieDust
author_rank: Frequent Contributor
timestamp: December 29, 2021, 12:58:42 pm
content: Why do temperature adjustment lockouts exist on soldering stations?

author: wraper
author_rank: Unknown
timestamp: December 29, 2021, 01:12:44 pm
content: Quote from: PixieDust on December 29, 2021, 12:58:42 pmSo soldering operators do not adjust controlled process without notifying anyone.

author: PixieDust
author_rank: Frequent Contributor
timestamp: December 30, 2021, 03:30:25 am
content: For cases where components are temperature sensitive for example?

author: sleemanj
author_rank: Super Contributor
timestamp: December 30, 2021, 04:19:37 am
content: To an extent, but I think mostly for ISO9001 probably

author: Martin Miranda
author_rank: Regular Contributor
timestamp: December 30, 2021, 04:43:28 am
content: same here, the sales engineer's task is to sell most soldering stations to factories for operators to use. but operators wanted speed to finish and produce more work. eventually losing quality... they introduced lockouts.there is one hakko soldering station that has a plastic key. eventually the operator managed to push a piece of cardboard to defeat it. -_- operators will think of anything to defeat that lock.

author: PixieDust
author_rank: Frequent Contributor
timestamp: December 30, 2021, 03:43:38 pm
content: Got it.
Suggestions for a sweep-frequency ultrasonic cleaner - Page 1
Forum section: electronics / general

author: Technomancer
author_rank: Contributor
timestamp: January 10, 2021, 09:35:46 pm
content: I am looking to purchase an sweep-frequency ultrasonic cleaner for PCB cleaning to remove flux residue and initial corrosion removal before I go in and start replacing components. I have heard only good things about Crest cleaners and in particular I was eyeing up the CP500D. Does anyone happen to have other recommendations or perhaps know of any issues I should be aware of for cleaners such as the one I was looking at?I was also wondering, for folks who do a lot of PCB work, if they think the tank size of the CP500D (or similarly sized cleaners) has been a regular issue or is perhaps only something that comes up occasionally on particularly large PCBs? A unit like the CP1100D has a larger tank but is also a few hundred more.

author: Microdoser
author_rank: Frequent Contributor
timestamp: April 15, 2021, 02:15:51 pm
content: Found this thread as I too am looking for an ultrasonic cleaner to remove flux residue from constructed boards in the £300-400 price range.Hoping this bump might get this thread some replies.

author: JM1010
author_rank: Contributor
timestamp: December 29, 2021, 05:35:50 pm
content: I'm also looking for more affordable alternatives to Crest with sweep function.Not sure what makes the Crest so special. I think it operates at a somewhat higher frequency eg 42 Khertz.Regarding the sweep mode, it would be great if someone in the know could set the record straight on this: desirable or definitive must have.At any rate, the only affordable cleaner with sweep function I found was the Derui. Their model which accommodates all board sizes is the dr-ds120 (equivalent of the Crest P1200). I have not tested the unit.

author: Microdoser
author_rank: Frequent Contributor
timestamp: December 30, 2021, 11:23:06 am
content: Hmmm. As this thread is nearly a year old now and the only two replies it has had have been "I'm also looking for one", I am suspecting that there are not many alternatives out there.Looks to me like there is a niche market that could be exploited

author: JM1010
author_rank: Contributor
timestamp: December 30, 2021, 03:00:04 pm
content: Yep, I wonder what makes the sweep mode (and Crest) so special. Is it hype or a must have? Hope someone in the know can answer..

author: Microdoser
author_rank: Frequent Contributor
timestamp: December 30, 2021, 03:17:03 pm
content: Quote from: JM1010 on December 30, 2021, 03:00:04 pmSometimes, the only special thing about a particular company is that they are the first, or only, company to do a thing, and it would be easy for another company (or a dedicated enthusiast) to construct a product that works as well, for far less cost.It may be that it is not hype, is also a must-have, but is at the same time very overpriced.
Agilent U3401A multimeter - teardown (photos) - Page 1
Forum section: electronics / general

author: Drirr
author_rank: Regular Contributor
timestamp: July 09, 2011, 10:32:27 am
content: see -https://picasaweb.google.com/cada.david/AgilentU3401A?authuser=0&feat=directlink

author: saturation
author_rank: Super Contributor
timestamp: July 09, 2011, 01:36:50 pm
content: Thanks for sharing, it looks very well made, with the proprietary Escort labeled ICs easily seen. Who did you get it from, and what, if you could share, was your final cost?

author: zaoka
author_rank: Frequent Contributor
timestamp: October 19, 2012, 09:17:32 pm
content: I got the same one from eBay, 2 things I dont like:Short beep for diode test does not work all the time, all units have this problem.Very slow Min-Max response for DC.Slow continuity response.I have feeling that some manufacturers does not want to make all features to work well in order to be able to push they more expensive multimeters.

author: shakalnokturn
author_rank: Super Contributor
timestamp: December 29, 2021, 02:50:35 pm
content: OP's Picasa gallery link is dead.If he's still around maybe he'll care to update.
Oltronix stabpac mca 5-3 Power supply Teardown Schematic walkthrough - Page 1
Forum section: electronics / general

author: oz2cpu
author_rank: Frequent Contributor
timestamp: December 26, 2021, 10:27:18 pm
content: my latest teardown from today, sorry video is in Danish, but with UK subs :-)Oltronix stabpac mca 5-3 Power supply Teardown Schematic walkthroughhttps://youtu.be/pspuqOsWG44have your snip tool ready, this video reveal a super good performing 6.4V zener implementationand alot of measurements to back it uphave any one seen this opamp zener construction before ?link ?
Weller tweezers stand - Page 1
Forum section: electronics / general

author: PlainName
author_rank: Super Contributor
timestamp: December 24, 2021, 10:38:51 am
content: Trying to work out whether the Weller WDH60, listed as being for the WXRT tweezers, is usable with WMRT tweezers. The proper WMRT stand is the WMRTH, which is quite a cheap minimal-looking stand but sells are considerably more than the WDH60. So far as I can see, the major difference is a magnet that lets the WMRT go into fallback mode when on the stand. Presumably the WDH60 either doesn't support that or the WXRT tweezers have their fallback reed switch in a different place.Anyone know if these are all compatible?

author: blacksheeplogic
author_rank: Frequent Contributor
timestamp: December 25, 2021, 11:58:31 am
content: Quote from: dunkemhigh on December 24, 2021, 10:38:51 amI own and use both sets of tweezers as I regularly use both a WX2 and WD2M. The WMRT tweezers are held by the stand for the WXMT (physically they have the same appearance & shape). However, the WXMT has a motion sensor which the WMRT I have does not. So you would lose out on the auto setback and auto off so it depends if that is important to you.

author: PlainName
author_rank: Super Contributor
timestamp: December 25, 2021, 11:04:00 pm
content: Ah, thanks very much!Correct me if I'm wrong, but that suggests the WXRT has a motion sensor rather than the reed relay on the WMRT, so doesn't need the magnet on the stand. I think I would like to have the stop/go feature, but maybe all that's required is to stick a magnet on a bit of rod poking out the front of the stand.Apart from the £20 or so it would save, the WDH60 has recesses for extra tips whereas the WMRTH doesn't, and they would come in useful. Hmmm. Difficult choices, but I am leaning towards a bit of DIY on the WDH60...

author: trp806mo
author_rank: Regular Contributor
timestamp: December 26, 2021, 09:18:50 pm
content: I would not hesitate, take the WDH60 drill the two pop rivets in order to add a 3D printed part which holds a magnet and screw them again in place. It will be a shame not to use the sleep mode of those irons as it manage the durabiity of the tips which are quit expansives.

author: PlainName
author_rank: Super Contributor
timestamp: December 26, 2021, 09:37:30 pm
content: Already on order, thanks
Aneng makes a soldering iron! - Page 1
Forum section: electronics / general

author: Fungus
author_rank: Super Contributor
timestamp: December 20, 2021, 11:53:06 am
content: Just in time for Xmas, Aneng makes a 60W soldering iron, digital display, temperature adjustable!https://www.aliexpress.com/item/1005002921348046.html

author: ygi
author_rank: Regular Contributor
timestamp: December 20, 2021, 09:41:33 pm
content: Looks like they slapped their brand on a generic sub 10$ Chinese soldering iron.

author: BrokenYugo
author_rank: Super Contributor
timestamp: December 20, 2021, 09:57:43 pm
content: Wow, couldn't even spring for the (hopefully) grounded version.

author: RoGeorge
author_rank: Super Contributor
timestamp: December 20, 2021, 10:19:27 pm
content: Same concept (all inside the handle) is pretty common now. Very practical when traveling. I have a similar no name for a few years, only rarely using it.Though, the cable is usually rather thick, stiff, and melts easily if touched with the hot part, when compared with the flexible and heat resistant silicon cable seen in a bench soldering station. Even so, handheld soldering stations like that do their job very well if operated with care.If possible, choose a model with monocardridge tips (the one in the OP image is not), and beware of what kind of monocardridge tip it has. Some might look the same as well known brands, but in fact have proprietary sizes that does not match.There are some battery powered thermostated soldering irons, too. Very practical to occasionally solder something in the back of the garden, or at the car, when there is no mains power around.And then, there are USB hand-held soldering stations, too, never tried a USB soldering iron yet so I'm not sure how practical would that be, sounds suspicious.
Siglent STB-3 Demo Board - Page 1
Forum section: electronics / general

author: maskedviperus
author_rank: Contributor
timestamp: December 04, 2021, 11:50:34 pm
content: Hey all,I shared this post a week ago in one of the groups I'm in on facebook but I wanna share it here and ask the same question before I mail it back on monday....I just wanna share a little story. Bout a month ago I reached out to Siglent to ask if I could borrow one of their stb-3 demo boards for a few weeks. 2 reason: I wanted to mess with some of the more advanced triggering on my scope that I rarely use.....and my kid does virtual school at home. He's been asking to mess with more stuff and this would be a good extra-curricular weekend project with him.They ended up obliging - big thanks to the folks in the USA office that made this happen - they had no reason to go out of their way to do something like this - the board is safe and will be returned MondaySo I make this post to share that story and to ask the community if anybody has any questions about this stb-3 demo board or if there is anything specific anyone wants to see. (i have an 1104xe). The stb-3 is not a very much known device - the have instructions buried in their website - but this thing can demo pretty much every complex signal an 1104xe can trigger and decode.We went through all the different signals and protocol decoding and the project was a real success. If anyone has any questions about the board or would like to see something feel free to ask

author: tautech
author_rank: Super Contributor
timestamp: December 20, 2021, 10:48:09 am
content: Nice and great to see kiddies interested in electronics and scopes.Here's a link to the STB-3 manual which has updated text and imagery from an older version I'm still using:https://siglentna.com/wp-content/uploads/dlm_uploads/2018/07/STB3_User-Manual_UM60109_E01B.pdfA trick to learn is rather than using the scope with a Serial trigger is to just use a falling trigger and a Holdoff setting longer than a packet to lock out the trigger from resetting until after a packet. This permits rock solid triggering at the start of a packet however if it's payload is constantly changing you won't freeze that however a serial trigger setting will.Burst signals are also fun for sharpening your Single shot settings.I've shared many screenshots of signals derived from the STB-3 and this Search feature exercise post is a favorite:https://www.eevblog.com/forum/testgear/siglent-sds1204x-e-released-for-domestic-markets-in-china/msg1370717/#msg1370717
Where to buy Electronics kit in London UK? - Page 1
Forum section: electronics / general

author: Faringdon
author_rank: Super Contributor
timestamp: December 17, 2021, 02:37:47 pm
content: Hi,I need to buy the following by Monday 20th Decx10 Loupe~0.7mm leaded solder1mm solder braid.Soldering iron, either 60W non-temp reg'd, or temp reg'dESD brushIs there anywhere in London UK i can go and buy this.I know of Cricklewood electronics, but are there any others?

author: themadhippy
author_rank: Super Contributor
timestamp: December 17, 2021, 02:40:39 pm
content: RS components, SE14 5RW or UB2 5BE (Sat Nav use UB2 5XJ)

author: Faringdon
author_rank: Super Contributor
timestamp: December 17, 2021, 06:17:39 pm
content: Thanks, but i've been to the trade outlets of RS and Farnell , and they arent very good.I doubt i would be able to get it there...they may be able to order it, but i need it now.

author: tggzzz
author_rank: Super Contributor
timestamp: December 17, 2021, 09:57:24 pm
content: Quote from: Faringdon on December 17, 2021, 06:17:39 pmOrder online, choose to have items delivered to s specified branch, pick them up there.Currently items would arrive on Tuesday, but if ordered before ~4pm(?) they will arrive the next working day.

author: artag
author_rank: Super Contributor
timestamp: December 17, 2021, 11:03:15 pm
content: For the loupe, try a jewellers supply such as H S Walsh in Hatton garden.I'd also recommend Cricklewood Electronics but they might not have the ESD brush, and possibly rather a cheap and nasty soldering iron. Amazon Prime is a possibility - next day even if that's sunday, though they're not always perfect at the moment and you might have quite reasonable objections to using them.You should also be able to instantly join London hackspace and get access to a reasonable workshop.
kweld vs malectrics opinions? - Page 1
Forum section: electronics / general

author: mastershake
author_rank: Frequent Contributor
timestamp: January 25, 2022, 03:30:54 am
content: anyone own them and have any thoughts one way or the other? right now i have a mot welder thats okay but im looking for something a bit smaller and portable to set up if i have to move it around or take it with me. sometimes hard to do with the mot one lol. appreciate it. i prefer the open source of the malectrics and general ease of repair / updates but the kweld seems to be more robust and most tell me that. im told the malectrics can not handle .3mm easy or at all really. also open to other units out there if they fit the purpose and will hold up well.
Attempting to find ECE1117 or any broken Dell XPS laptop from the last few years - Page 1
Forum section: electronics / general

author: branchcontrol
author_rank: Newbie
timestamp: December 10, 2021, 04:28:14 am
content: Hello EEVblogers,Big fan of the site, but I haven't had a huge need to post until today. Hopefully this is the correct topic, but let me know if you think this should be posted in elsewhere I will happily obligeI am working on a project at the moment which requires some analysis of the keyboard control assembly used by later Dell XPS laptops. In order to reverse engineer the current keyboard controller, I am looking for either:1. a broken (or working) Dell XPS laptop that still has the small interconnect board with the ECE1117 microchip used for the keyboard assemblyOR2. the ECE1117 microchip itself so I can try and build my own small assembly.Option is 1 preferable since the keyboard assembly would be intact, however, I would settle for just the ECE1117 if anyone knows where I can get it. When I browse the standard distributors (e.g. Mouser, Digikey, etc...), they only offer bulk purchases for the chips and the leadtime is ~12 months, which is much too long. If, by some miracle, anyone does have access to a garbage XPS machine that is no longer wanted/needed, I would happily pay for shipping + a something small for the trouble. Additionally, a suggestion for where I can purchase the ECE1117 would be greatly appreciated.For reference, here is the data sheet for the ECE1117:https://ww1.microchip.com/downloads/en/DeviceDoc/00001860D.pdfThanks!

author: DavidAlfa
author_rank: Super Contributor
timestamp: December 10, 2021, 10:08:21 am
content: https://a.aliexpress.com/_v04y7o
M-Triangel CP-301| Mini Desktop Fume Extractor  - Page 1
Forum section: electronics / general

author: candrian
author_rank: Regular Contributor
timestamp: August 17, 2021, 01:43:12 pm
content: Hello,I'm looking for a fume extractor to buy for my home lab. It will be used 2 to 3 times per week for light use not production. I found online the M-Triangel CP-301| Mini Desktop Fume Extractor and it looks really interesting and in a good price. I was wondering if anybody here has tried this equipment before.

author: thm_w
author_rank: Super Contributor
timestamp: August 17, 2021, 11:13:12 pm
content: Seems ok for the price, ~$130:https://www.aliexpress.com/item/1005002797285361.htmlIts almost certainly going to be better than a desktop Hakko FA400 style fan/filter product.The only doubt is you are buying a filter that claims to be Hepa but there is no guarantee as to its actual performance at all.Also there is no dB rating or ability to adjust the fan speed. But 15W should be low, and fan controllers are cheaply available.

author: candrian
author_rank: Regular Contributor
timestamp: September 19, 2021, 01:51:39 pm
content: I decided to finally buy it. I received it a few week ago and it looks really good for it's price. It has a small footprint for workbench placement and the noise is reasonable. The fume extraction seems to be good from the side of smells at least and can suck the smoke from about 5cm distance from the source.I would recommend it for a home lab or small productions

author: lfldp
author_rank: Regular Contributor
timestamp: December 06, 2021, 07:44:57 pm
content: @candrianquestion - do you fell colophony fumes exhausted from this fume extractor ?1 yes i fell 100% of colophony outgoing2 yes i fell 50% of colophony3 yes i fell just small ammount of it maybe 25%can you answer to this question ? coz i am using similiar fume extractor from china but with larger filter and power up to 285m3/h and it does the job no more than 10% of colophony (formaldehydes) being exhausted from itas about hepa dont care coz M5 class prefilter is much more important than it in this setup ...thx