hybridfree/eevblog-posts huggingface dataset:
Weller WT2M Parts - Page 1
Forum section: electronics / general

author: ozindfw
author_rank: Newbie
timestamp: September 19, 2022, 03:50:39 pm
content: I've used Weller stuff for a long time and have grown accustomed to doing my own repairs. I have an otherwise functional WT2M that has a badly damaged case. I was surprised when Weller said they don't sell partsand the fix is "only through our repair services."Is this true for Weller parts everywhere, or is this limited to some places like the US?The indicate that the repair will be $100-$200 with indeterminate turnaround. So I need to arrange for something else. Looks like JBC still sells parts, I guess this is the nudge I needed.Oz (in DFW, Texas, US)
Alternative to JBC Nano Tweezers and Hot Air  - Page 1
Forum section: electronics / general

author: sobakava
author_rank: Contributor
timestamp: October 12, 2022, 09:07:13 am
content: I am planning to upgrade my low-cost Soldering Iron + Hot air combo station (968D) with a more ergonomic and precise set, but still on a budget.I mostly do rework, including 0201 components on my own boards. Sometimes I do small assembly batches too, mostly QFN, 0201/0402 and sometimes some thru-hole parts like header pins.JBC NT115, T210, T245 tips look suitable in general.I have been looking at Aixun T3A, as a compact solution I wish I had a compact hot air option too. I never used them but thin JBC hot air hoses and nano tweezers look great.I there a station that I can use NT115 handle, NP115 nano tweezer and NH heater hose?https://www.jbctools.com/nh-high-precision-heater-hose-set-for-jna-product-1878.htmlhttps://www.jbctools.com/np115-a-nano-tweezers-product-1348.htmlIn general I didn't see a thin, lightweight hot air station clone. Most of them have the fan in the handle similar to my current setup.For precision parts, what would be the best budget soldering iron + hot air station combination? A single combo device or two units to be stacked together.Thanks in advance

author: thm_w
author_rank: Super Contributor
timestamp: October 14, 2022, 09:44:53 pm
content: Quote from: sobakava on October 12, 2022, 09:07:13 amNo, but you can get good Hakko tweezers + a metcal PSU for cheap. See previous threads here.Quotehttps://www.tequipment.net/Quick/TR1100/Desoldering-Equipment/Rework-Stations/

author: tooki
author_rank: Super Contributor
timestamp: October 14, 2022, 11:41:25 pm
content: Quote from: thm_w on October 14, 2022, 09:44:53 pmBeware that 200W is a very, very small amount of heating for hot air. That can significantly limit what you can do with it. Low-power hot air like that tends to be more useful for soldering (where you can work your way around a chip sequentially) than for rework, where you need to be able to get the entire chip hot at the same time.
Source for RG400 cable - Page 1
Forum section: electronics / general

author: matthuszagh
author_rank: Frequent Contributor
timestamp: September 17, 2022, 05:49:48 pm
content: Where do people get their raw RG400 cable? I like the quality of Pasternack stuff, but at $10/ft it's really expensive. At the other end of the spectrum is this Eightwood cable from Amazon (https://www.amazon.com/Eightwood-Coaxial-Double-Copper-Shielded/dp/B08216SZ96?th=1) that's almost an order of magnitude less expensive. I'd be a bit concerned about the quality of that though.
Samsung soundbar and Samsung TV - Page 1
Forum section: electronics / general

author: Connecteur
author_rank: Frequent Contributor
timestamp: September 10, 2022, 03:55:25 pm
content: The soundbar is model HW-T400, and the TV is a Series 6 model UN49K6250. After a difficult pairing process, I got it to work well, and the TV remote controlled the volume on the soundbar. Very handy because it eliminated the need for the soundbar remote.Eventually the soundbar and TV became unpaired, and when I got it paired again, there was no longer any volume control on the soundbar from the TV remote. I repeated the pairing any number of times, but I never got it back to where I could control sound volume with the TV remote. I found it inconvenient to keep the soundbar remote on hand for whenever I wanted to change volume or mute the TV.I even went so far as buying a different brand of soundbar, but still no luck. So this went on for over a year, me awkwardly hunting for the soundbar remote whenever I needed to change volume or mute the TV.Then I got a Chromecast with the Google remote. The setup was so automatic and seamless, that I don't remember much but just letting it do it's thing. When it was finished it somehow had set up the soundbar to work with either the TV remote or the Google remote.Can anyone explain how it did that?
Suggestions for filtering material alternatives on desoldering stations wanted. - Page 1
Forum section: electronics / general

author: Haenk
author_rank: Super Contributor
timestamp: September 04, 2022, 04:37:19 pm
content: So I finally converted my Pace SX-80 to a "glass tube" container. However the little filter seems to be saturated even faster than in the paper tubes I used before.Any sugggestions for a cheap alternative material?Also the main membrane filter desires a cheap alternative as well. I have considered taking apart FFP2/N95 masks - as they have several layers, this might come out way cheaper as the original PACE filters.Any ideas?

author: thm_w
author_rank: Super Contributor
timestamp: September 06, 2022, 10:14:19 pm
content: Did you take apart the paper filter to see whats contained inside?Masks is probably a great source of filter material.

author: tooki
author_rank: Super Contributor
timestamp: September 07, 2022, 05:24:08 pm
content: Quote from: Haenk on September 04, 2022, 04:37:19 pmYou do have the metal S baffle installed, right? The felt filters aren’t intended to be the first line of defense against the molten solder. (It’s more to catch the flux.)Even though you’re not supposed to, I have washed the felt filters in flux remover solvent until clean and reused them just fine.Anyhow, one thing that works great instead of the S baffle is to stuff some brass wool into the tube. Just tear off a bit and loosely shape it into a little ball 1-2x as thick as the felt filter, then stuff it in just ahead of the felt. You can use old brass wool that’s no longer good for wiping your soldering iron tip.By “main membrane filter” I assume you mean the VisiFilter (which is the secondary filter; the felt is the primary)? They’re not that expensive in large packs.I recently discovered very similar looking filter media on aliexpress shops that sell laboratory supplies. I’m not entirely sure if they’re the same material or not, nor whether it’s actually any cheaper than Pace’s filters.My hunch, though, is that even N95 mask material is more porous than the filter discs. I wouldn’t trust it to protect the vacuum pump, at least not before conducting significant testing (e.g. by putting a disc of it in front of a genuine filter disc and seeing how much gets through).
Help with Eakins IMX290 camera  - Page 1
Forum section: electronics / general

author: andrewwong2000
author_rank: Contributor
timestamp: September 01, 2022, 10:15:27 am
content: Hoping someone might give me some tips..I bought an Eakins IMX290 camera a while back and it's been a great tool on my bench.However, lately when powered on, the camera boots up, AF system focuses but the firmware doesn't provideany GUI and there's no mouse cursor/menus. So once it's on, it's useless (but the camera works)Apart from soldering a serial cable to the PCB, are there any other waysto get it to reset ?Thanks,Andrew

author: itscoldoutside
author_rank: Contributor
timestamp: September 04, 2022, 02:04:16 pm
content: Are you powering it from USB? I've got a different camera but the gui doesn't work on mine when powering it with a USB cable connected to a PC. I have to use a charger plug (5v 2amp) and then it works as it should.
PartsBin - Electronics Component Organizer - Page 1
Forum section: electronics / general

author: MIKE32096
author_rank: Newbie
timestamp: August 22, 2022, 04:23:39 am
content: PartsBin, formally WinHeist is a completely rewritten application for organizing electronic components.I took the good elements from WinHeist, what users had asked me for and a lot more and rolled them into PartsBin.I'm releasing it as a BETA but I have personally have been using it for some time QAing it and it is stable and feature rich.You can get it athttps://jaxcoder.com/Help/HelpIndexA short list of functionality provided by PartsBin is given here. It is not a complete list but provides an overview of the main features of the application.Supplier/Vendor database.Ability to define external tools.A comprehensive order system.Define applications to open documents. For example assign SumataPDF to open PDF files (datasheets).Component name entered in free form. (max. 80 characters)Set component image.Storage Location name entered in free form. (max. 80 characters)Ability to move components in mass between storage locations.Component may have one or more Tags.Ability to search by TagSet component alert threshold and the ability to filter alerted components.Filter list by various component fields.Unlimited attachments such as; datasheets, website links, etc..Pricing for component by supplier; single unit or bulk pricing.Component history that tracks such events as; creation, location movement and inventory count adjustment.
Looking at getting new JBC tips - Page 1
Forum section: electronics / general

author: Brad808
author_rank: Contributor
timestamp: August 15, 2022, 04:15:13 pm
content: I have an older JBC station (DI3000) with a 245 series handle and a 2245 006 tip (0.6mm chisel tip). The setup works great for through hole soldering but I was thinking about a smaller setup for SMD parts and possibly a small variety of 245 tips.For SMD work should I look at getting a 210 series handle? Or a 0.3mm conical tip for the 245?How do the JBC clone tips hold up? The price is substantially cheaper for the clone tips (ordering to Canada), but the has me a bit suspicious as well. Is it better to "buy once cry once" for the genuine tips or are they good enough for occasional use (while primarily using the genuine JBC tip I have now). What about the clone handles?I also have a set of the micro tweezers (Pa1200 tweezers with 1200 008 tips) but if someone has a better suggestion I'm all ears.Thanks 😎.

author: thm_w
author_rank: Super Contributor
timestamp: August 15, 2022, 09:01:27 pm
content: Clone tips are reportedly not great. Maybe good ones exist but its going to be difficult to test yourself and verify.If you just wanted various tip shapes to try out, or you are just doing basic SMD assembly, its probably fine. Can always buy the genuine one that you end up using the most later.https://www.accessotronik.com/SearchResults.asp?Search=c245Clone handles can be decent. See some of SDGs reviews.Most people would say conical is crap. Search here and you find many threads here about tip suggestions, a lot of it is personal preferencehttps://www.eevblog.com/forum/reviews/recommended-tips-for-new-jbc-solder-station/https://www.eevblog.com/forum/reviews/cheap-jbc-c245-tips/https://www.eevblog.com/forum/reviews/jbc-c245-tipscartridges-how-to-use-them-which-to-choose/
Blow S50 26-108# keyless entry system receiver teardown - Page 1
Forum section: electronics / general

author: ESXi
author_rank: Regular Contributor
timestamp: August 15, 2022, 01:39:23 pm
content: Blow S50 inners:ULN2003A sop 16 NPN darlington array for relay coilsMystery chip (mcu?) blank chip not engraved with part number sop 14 possibly contains the "rolling code security" subroutines (pin 11 connected to 590R pin 5)3x JQC-3FF-M2 relays 12vdc 15amps78L05 sot-223 LDOSacoh SYN590R RF Wireless Receiver IC sop 8Eeprom sop 8 ATHYC802 24C02N (fake? Atmel eeprom 2Kbit ( 256 x 8 ))Electrolytic caps:1x LFM® 470uF 16v -40+105°c1x DWBJ® 470uF 25v -40+105°cSilkscreen witting:EG-500TWL-3PCB:1.6mm2021.07.10PCB weight (/wo enclosure):56.34 gramsSeems to be a generic unit rebranded.https://www.alibaba.com/product-detail/Universal-12V-Auto-Remote-Central-Kit_62217648487.htmlMore images:https://imgur.com/a/LU8DD7WSecurity:Level: weakVector: signal sniffing & replay attackReference:https://www.rtl-sdr.com/a-review-of-the-hackrf-portapack-with-havok-firmware/Manufactured by:Guangdong Victor Electronics Co., Ltd.Business Type: ManufacturerLocation: Guangdong, China (Mainland)Year Established: 2006Main Markets: Mid East 32.89% Eastern Europe 21.67% South America 17.69%Sold here in the local market for around ~30 euro pop, per qty 9.80 $ (new Bluetooth controlled version) on Alibaba.
Identification of laser - Page 1
Forum section: electronics / general

author: tom99
author_rank: Newbie
timestamp: August 08, 2022, 09:09:14 am
content: Hi,So I purchased a job lot of electronic items. Amongst the items there was a laser. I have no experience with lasers and have no idea what type it is or how to use it. Any advice etc would be much appreciated!Thanks, Tom

author: Gyro
author_rank: Super Contributor
timestamp: August 08, 2022, 09:23:57 am
content: It's a Ne-He (Neon - Helium) laser tube. You haven't given dimensions so it's difficult to give a power output, but it will be somewhere in the 1mW range, normally with a Red Beam. It will require something like 1.5 - 2kV (current limited) to run and up to 8kV to start.Although laser diodes have become very widespread, He-Ne laser tubes typically produce a much better columnated (low divergence) circular beam. This site is one of the best around in terms of physical description, care and feeding etc...https://www.experimental-engineering.co.uk/helium-neon-lasers/he-ne-lasers-introduction/

author: tom99
author_rank: Newbie
timestamp: August 08, 2022, 10:59:47 am
content: Quote from: Gyro on August 08, 2022, 09:23:57 amThank you for the quick answer! Shame I haven't got a safe means of testing it. Any idea on the value of it? Not really sure whether to sell it or keep it in the hopes of one day using it (like most electronics)

author: Gyro
author_rank: Super Contributor
timestamp: August 08, 2022, 01:03:54 pm
content: I'm not sure on the value - size, power, condition manufacturer etc. all play a part. Brand new, known brand ones seem to be able to command several hundred pounds on ebay these days, others, much less.The main factor is whether it actually works or not. The alignment and condition of the mirrors (one 100% reflective, the other, the beam exit end, about 99%) is critical, They need to be spot on for the tube to go into laser mode. Also assuming that the seals are intact. If you have no evidence that it is functional, it becomes a pretty ornament in price terms.Generating those sort of DC voltages is a lot easier than it used to be. Normally comprising a flyback inverter followed by an ordinary voltge multiplier of a few stages and the all important series ballast resistor (covered on the website). That sort of setup can be run from a low voltage supply rather than directly from the mains (the output can still bite though!).

author: tom99
author_rank: Newbie
timestamp: August 14, 2022, 01:22:27 pm
content: Quote from: Gyro on August 08, 2022, 01:03:54 pmThank you for all the help Gyro! If I get it up and running I'll post it here. Won't be for a while. Got a few deflection e/m tubes to test over the next week or so. Might post the results of those though
DER EE DE-5000 Guard Line - Page 1
Forum section: electronics / general

author: PerranOak
author_rank: Frequent Contributor
timestamp: August 05, 2022, 02:30:31 pm
content: I bought the DE-5000 LCR meter: it's great and seems to work well.One thing though, it has a "guard line" with a croc clip on it and the manual says:Guard line (TL-23) provides a shield for DUT, preventing interference when measuring high-impedance componentsbut it doesn't tell you where you connect this!Please tell me: where should I shove it!

author: David Hess
author_rank: Super Contributor
timestamp: August 05, 2022, 04:31:14 pm
content: Quote from: PerranOak on August 05, 2022, 02:30:31 pmThe guard is the shield for the 2 force and 2 sense connections and any metallic enclosure used for the test fixture if present. It blocks capacitive coupling to these wires and the device.

author: PerranOak
author_rank: Frequent Contributor
timestamp: August 05, 2022, 05:22:48 pm
content: "2 force and 2 sense"?

author: David Hess
author_rank: Super Contributor
timestamp: August 05, 2022, 07:48:57 pm
content: Quote from: PerranOak on August 05, 2022, 05:22:48 pmLike a lot of LCR meters, the DE-5000 supports Kelvin or "4 wire" connections. That means that two leads are outputs which drive the device under test, and two separate leads connect directly to the device under test to make the measurement. This removes the parasitic resistance, capacitance, and inductance of the lead connections to the device under test.

author: ledtester
author_rank: Super Contributor
timestamp: August 06, 2022, 02:17:55 am
content: Quote from: PerranOak on August 05, 2022, 02:30:31 pmBased on the color scheme of the cable (green/yellow) my guess is that you should clip the aligator end of the TL-23 to an earth ground.

author: David Hess
author_rank: Super Contributor
timestamp: August 06, 2022, 01:30:10 pm
content: Quote from: ledtester on August 06, 2022, 02:17:55 amIf you had a metal shield under your workbench then that would be a good place to attach it, but it will only matter for the most sensitive measurements.

author: PerranOak
author_rank: Frequent Contributor
timestamp: August 07, 2022, 11:08:57 am
content: Cheers all.
12v Motorised valve from China with supercap - Page 1
Forum section: electronics / general

author: Dankoozy
author_rank: Contributor
timestamp: August 01, 2022, 05:30:09 pm
content: I bought a few motorised valves from China so i could make my own heating controls and run them off 12v. These are much cheaper than the 230v mains motorised valves that are common here in Ireland and usually have a spring return on them and continously waste about 6w of power running the motor stalled just to counteract the spring.But anyway I hooked it up to my power supply to see if they were any good and could not hear any obvious spring return mechanism. So I decided to have a peek beneath the cover as you do and saw they put in a little 5v/1F supercap and some power conversion circuit that has just enough juice to close the valve again once you remove the power supply. Kinda neat

author: Gyro
author_rank: Super Contributor
timestamp: August 01, 2022, 06:02:15 pm
content: They look a bit fragile compared to standard mains ones, what's the temperature spec?Agreed, storing enough energy to close again is a neat idea (assuming that they still make it as the valve ages and stiffens). The spring and motor arrangement on the mains onesiswasteful in modern context.

author: Dankoozy
author_rank: Contributor
timestamp: August 01, 2022, 09:33:52 pm
content: Quote from: Gyro on August 01, 2022, 06:02:15 pm80 degree or 100 depending on which eBay listing you look atI suppose one could stretch the life of it by embiggening the supercap if it became a problem

author: Gyro
author_rank: Super Contributor
timestamp: August 03, 2022, 05:43:11 pm
content: Ah, the old seller 'how far can we plausibly push it' specmanship battle on the same product.There should be a temperature drop between the water passing through the valves and the electronics (as long as you keep them well ventilated). It's probably worth checking the temperature specs on the electrolytics and supercap, though I suspect that they will be ordinary 70'C.If it comes to it, failure to fully close is probably a much better than failure to open!
Casio fx-991EX to solve chi-square test? - Page 1
Forum section: electronics / general

author: shivajikobardan
author_rank: Contributor
timestamp: August 01, 2022, 02:44:09 am
content: Does it shows statistics like observed, expected etc? Is it possible here? There is statistic tab where you can get mean, variance etc, but not sure if this is possible. Chi square test I'm doing is for testing uniformity.
Why is this Ebay listing for a CRT showing the medical equipment disclaimer? - Page 1
Forum section: electronics / general

author: Ben321
author_rank: Frequent Contributor
timestamp: October 13, 2022, 04:32:41 am
content: I know that if you sell equipment on Ebay that's designated as medical equipment, Ebay requires you to include a disclaimer that the purchaser will need to be a licensed doctor or something like that. But this isn't medical equipment. It's literally just a CRT. The description doesn't even say that it had been removed from medical equipment, or that it's a CRT of a size and type commonly used with in medical equipment. But for some reason this item for salehttps://www.ebay.com/itm/125179120421has the following disclaimer:QuoteWhy is that disclaimer even being included with this item?

author: ataradov
author_rank: Super Contributor
timestamp: October 13, 2022, 04:47:01 am
content: Because this seller has 6000+ items for sale and they all have the same copy-pasted description text.

author: Ben321
author_rank: Frequent Contributor
timestamp: October 13, 2022, 07:57:28 am
content: Quote from: ataradov on October 13, 2022, 04:47:01 amThat makes sense. I guess he didn't want to have any items accidentally being medical items without a disclaimer, so he just used a default description for everything that included that disclaimer.

author: langwadt
author_rank: Super Contributor
timestamp: October 13, 2022, 09:33:13 am
content: Quote from: Ben321 on October 13, 2022, 07:57:28 amjust like the may cause cancer in California warning ..
T3B Aixun issue - Page 1
Forum section: electronics / general

author: slotmonkeys
author_rank: Newbie
timestamp: July 30, 2022, 01:40:09 am
content: Has anyone broken down this soldering station and worked put what mechanism this unit uses to detect the iron being docked and extraction area. I have a new unit with a T210 handle that doesn't respond when docking but does when either the tip or the metal collar of the iron touches the extraction area. ?
Test needle drilling platform type thing for 2 sided PCB work ? - Page 1
Forum section: electronics / general

author: MathWizard
author_rank: Super Contributor
timestamp: July 30, 2022, 01:29:16 am
content: I'm trying to find some traces on the other side of a PCB, using 2 hands and DMM probes, and I don't want to solder on a bunch of wires, and I don't have a fine metal brush for use with continuity mode. I tried some stranded copper wire, but without having a good cleaning, it didn't work so good.So I'm just wondering if u can get a product, or if anyone made there own thing, that would look like a drilling platform, or a mosquito or some spider, with a base you could strap onto the PCB, and have an adjustable needle, that locks in place and has a wire for your DMM....so u can probe the other side of the PCB.That would work great for chips too, that u don't want to try and solder onto.
KSGER T12 Handle with an Fake-Hakko Controller - Page 1
Forum section: electronics / general

author: KoenigHDxd
author_rank: Newbie
timestamp: July 27, 2022, 05:51:01 pm
content: Hello Guys,first of all i wanted to buy an T12 Soldering station, but i didn't want an prebuild one. So i bought this controllerhttps://de.aliexpress.com/item/4000136467481.html?spm=a2g0o.order_list.0.0.31b85c5fOqgsyS&gatewayAdapt=glo2deu, and i also bought this Handlehttps://de.aliexpress.com/item/33004762167.html?spm=a2g0o.order_list.0.0.31b85c5fOqgsyS&gatewayAdapt=glo2deu. I thought T12 would be T12, but as I found out this isn't the case. So i soldered all together and even looked up different wirings and tried many of them. I only get to heat up the tip as much as it can handle, it doesn't stop heating... So my only guess right now would be a missing 10k NTC Thermistor, which is shown in the wiring diagram of the controller, but unfortunately i don't have one here right now so i would need to get one. And before i even start try even more I wanted to ask if anyone has already tried this, or if my thoughts are correct.I would appreciate the help.

author: DavidAlfa
author_rank: Super Contributor
timestamp: July 27, 2022, 08:32:59 pm
content: If you follow the controller wiring diagram it should work.But if you wired it wrong, chances are the mosfet was damaged and permanently shorted.So ensure it's still ok. Remove the power, disconnect the handle and check the resistance between 24V and T12+.If it reads low resistance, it's gone!It's strange they use Earth wire for the switch and NTC, but it's probably the same as T12-, check if they're connected together in the board.Likely they use a different ground path to minimize the error caused by the voltage drop when the heater is running.If not connected together, then connect the sensor and switch to T12- instead and try again.

author: KoenigHDxd
author_rank: Newbie
timestamp: July 28, 2022, 01:38:34 pm
content: Hey, thanks for your answer.I measured 1 ohm between 24v and t12 +.So i guess its gone?So do you think its possible to replace the Mosfet? Or is the controller unusable and i should get a new one?

author: DavidAlfa
author_rank: Super Contributor
timestamp: July 28, 2022, 02:20:44 pm
content: Replace the MOSFET

author: KoenigHDxd
author_rank: Newbie
timestamp: July 29, 2022, 01:27:10 pm
content: I replaced the MOSFET, it's working now! Thank you!

author: DavidAlfa
author_rank: Super Contributor
timestamp: July 29, 2022, 03:14:33 pm
content: Nice!
Akai CD3000XL LED display replacement for the old inverter backlight LCD Display - Page 1
Forum section: electronics / general

author: sampler1
author_rank: Regular Contributor
timestamp: July 12, 2022, 01:55:51 am
content: Akai CD3000XL LED display replacement for the old inverter backlight LCD Display.Does anyone know the part number or make of the LED replacement? I know there is guys selling on Ebay but I also know they can be bought for 1/3 the price. ,I just can't seem to find the model for Akai.Yes, I know this is a very old sampler but it works well.Thanks in advance, Hope this is not too far off this forums topicsCheers.

author: Ungolian
author_rank: Regular Contributor
timestamp: July 14, 2022, 06:49:13 pm
content: Being a fellow audiophile, this piqued my interest. Is it the whole screen, or just the backlight? If it's just the backlight, all I can say is that you are probably better off buying the one off of eBay for $35. While you could probably find one on AliExpress for less, you also get what you pay for. Ali screens have poor quality control. You could get one with dead zones, one that works fine for a week (then craps out), or you could get one that works for the listed 6000 hour like the ones on eBay. But your odds are probably 33% of getting a quality one. Any time I buy replacement screens from Ali, I order multiples (granted, they are like $2 each...). So you're probably going to spend the same amount of money. Yes, you could wind up with 3 quality screens that will last decades, but the odds of that are slim. I would contact the seller and try to get a brand name or something to at least verify that they are indeed US manufactured, and not marked-up Ali screens.

author: thm_w
author_rank: Super Contributor
timestamp: July 14, 2022, 08:54:25 pm
content: Is this using the same screen?https://www.mpc-forums.com/viewtopic.php?f=15&t=187685
Lightnovo Raman Spectrometer Demonstration At Roskilde Festival 2022 - Page 1
Forum section: electronics / general

author: madsbarnkob
author_rank: Frequent Contributor
timestamp: July 29, 2022, 12:54:15 pm
content: At Roskilde Festival 2022 I met 3 Ukranian startup company scientists from the company Lightnovo. Lightnovo is based in Denmark, where they have all been working at DTU. They had their product MiniRaman Spectrometer with them, for demonstration of liquid and powder identification, for a live audience at the CERN / Niels Bohr Institute place at the festival, the Science Pavilion. Thier MiniRaman Spectrometer is a handheld device with battery, bluetooth connection and a Android tablet with application. It is able to recognize virtually all substances based on their database and research, from shining a laser at the target. More technical details can be found at their website:https://lightnovo.com/lightnovo-technology/technology-miniraman-spectrometer/This is NOT a paid promotion. This is my small contribution to help a Ukranian based tech startup that has managed to develop a awesome piece of equipment, that pushes the current expensive manufacturers products, down to a handheld scale.

author: technogeeky
author_rank: Frequent Contributor
timestamp: August 01, 2022, 12:07:06 am
content: Thanks for your content on the regular, and thanks for sharing this device. What a fantastic accomplishment to bring a device out of the university lab and into the hands of many!Granted, the cost is "enquire within" so perhaps not for hobbyists... But still.Slava Ukraini!
Varian 845 iIon Gauge Controller Operation - Page 1
Forum section: electronics / general

author: Kjo
author_rank: Regular Contributor
timestamp: July 12, 2022, 12:02:18 am
content: I have an 845 controller and the user manual, but I really dont know how it should operate (its likely 1970s vintage).Both of the thermocouple gauges are working ~10torr. the gauge buttons light when pressed, but there is no tube attached.I dont have a way to do that at the moment.The main operational question is whether the digital display should light with no tube connected? (it does not).Is there a way to test the display?Or point me to a better forum or user.Kevin

author: LaserSteve
author_rank: Super Contributor
timestamp: July 12, 2022, 01:45:01 pm
content: Duniway Stockroom Inc.A Vacuum Supplier... may have answers if you call them. Do not run an ion Guage or its electronics at atmosphere. Just don't.Steve
Samsung front load preprogrammed cycle mod - Page 1
Forum section: electronics / general

author: abdulbadii
author_rank: Frequent Contributor
timestamp: July 10, 2022, 01:44:31 am
content: Anyone have any knowledge on hack of Samsung front load machine's pre-programmed cycle wash, that is a viable, possible way to safely modify its timer value settings and/or insert a kind of cycle into another ?
Big improvement  - Page 1
Forum section: electronics / general

author: schwaggins
author_rank: Contributor
timestamp: July 07, 2022, 03:52:41 pm
content: The latest QUICKO firmware is a huge improvement on my DXCHMEI T12-A, even the OLED display looks better/more vibrant.These tip settings make it run perfectKp: 120Ki: 50Kd: 20Imax: 0.5Imin: 0I installed a JST header so it can be flashed without opening it

author: tooki
author_rank: Super Contributor
timestamp: July 07, 2022, 11:49:16 pm
content: This thread is a poster child for “how not to title a thread”, an exercise in wasting people’s time. 99% of people who are curious click in it to discover it’s specific to one model of cheap soldering gear, while people who have that gear won’t see it because it’s not in the title.
Datasheet for DM5401? - Page 1
Forum section: electronics / general

author: freda
author_rank: Regular Contributor
timestamp: September 09, 2022, 10:25:36 pm
content: BTW, did all the usual google searching,so if you got it by other means and willing and able to share that would be greatno its not a quad nand package.it is supposedly a MOSFET for ignition driving, in the handy TO263 package,so i suspect it should have reasonably good specs for what i want to use it for.....
An unusual bit of test gear, for an industry few will use. - Page 1
Forum section: electronics / general

author: SeanB
author_rank: Super Contributor
timestamp: July 05, 2022, 04:55:05 pm
content: Decided to see what is inside this bit of arcane test equipment. Test gear, but while it is electronic, the use is definitely biological, and it has only one use.Hennessey meat grader, what is used to set the quality of the meat you buy. Push the probe into the meat, and this machine does some arcane work with sensing in the probe, using an optical sensor in the front as it goes through, involving detecting fat content, colour and water content, then makes a decision as to what grade will be applied to the meat. Thus there is a need to attach a printer, probably a serial one via the power cord, and print out the grade, A, B, C and the class 1, 2, 3 of the meat, that is then used to run a coloured ink roller down the side in a line, to show, even after it has been sliced up into smaller parts, the grade of the original.Cleaning is to remove stuff from the front, then wash to remove "debris" with hot water, and then an inner housing on the electronics to keep them dry, with the 68705 CPU, with 16k of memory, and the external program EPROMs as well, plus the interface to the rest of the unit. Bottom board with the analogue stuff, and probably using some form of ADC to communicate with the CPU, and the isolated serial interface to the printer. 555 timer there as well, probably doing reset.Definitely something is wrong, either there is another board hidden in the front, which does power conditioning, as 3A is a little high for power draw, though it does have sensing, so it knows when the probe is pushed into the device under test, and the speed of this, so it likely does evaluations on all aspects, rating according to depth as it goes in. According to the manufacturer, up to 200mm per second for the current models.Power up and it does sort of work, but without the other half, which I do not have, it remains a curiosity, made likely 1999, from the date codes, and never being repaired in this time, though there are a few minor revisions on the board, where there are extra components added, probably due to earlier ones having common failures.Still being made, though a much newer model, with some improvements made on it.

author: SeanB
author_rank: Super Contributor
timestamp: July 05, 2022, 04:55:56 pm
content: More pictures, last ones.
Metcal MX-500P firmware - Page 1
Forum section: electronics / general

author: dfnr2
author_rank: Regular Contributor
timestamp: July 04, 2022, 03:41:43 pm
content: I just picked up a Metcal MX-500P unit on eBay. The unit is the newer version with the LCD display, similar to the MX-5000, and works just fine. I notice that the firmware is v1.04 and my other unit is 1.22. I'm curious:- Is there a document describing the differences between the firmware versions?- Does anyone know the latest version?- Does anyone have an image or hex file with the latest version?I've seen the thread for the MX5000 firmware. Do the MX-500 and MX-5000 share the same firmware? I am aware That the 5000 has 80w total output, and can support simultaneous dual outputs, but it's not entirely impossible that they use a single image to cover both models.

author: armandine2
author_rank: Frequent Contributor
timestamp: July 04, 2022, 05:01:14 pm
content: I got my new MX-500 about a year ago - it is running version 1.03
Power meter with SNMP - Page 1
Forum section: electronics / general

author: kuon
author_rank: Regular Contributor
timestamp: September 08, 2022, 11:41:08 am
content: I am looking for a power meter (power + energy) with ce 13 plug or swiss plug or even block terminal and I'll manage.240V 10A and the most important feature I am looking for is SNMP monitoring with LAN (wired, I don't want wifi).I found tons of things on aliexpress, but they all look more or less shady.I am not looking for something super cheap as I'd like something robust but it should not be too expensive either.Do you know anything?

author: thm_w
author_rank: Super Contributor
timestamp: September 08, 2022, 10:37:39 pm
content: We don't know what "not too expensive" means unless you put a dollar value.This is for home use, and calibration is not critical I assume?

author: kuon
author_rank: Regular Contributor
timestamp: September 08, 2022, 11:27:22 pm
content: Quote from: thm_w on September 08, 2022, 10:37:39 pmYeah, I should have specified that. Like 1000$ for my 5 outlets/circuits (outlets are in different room). This is for my home lab and servers. I'd like to setup alarms if I forget things on (I sometime forget the scope, bench supply, VNA, spectrometer... ON to go grab a bite, and then I go shopping and leave everything on for a day.... and all that is drawing quite some power). Also for my servers I'd like to see if I can optimize the power consumption with software tweaks if I have a real time reading.

author: NiHaoMike
author_rank: Super Contributor
timestamp: September 09, 2022, 03:55:30 am
content: Look up "branch circuit monitor".

author: kuon
author_rank: Regular Contributor
timestamp: September 09, 2022, 12:37:34 pm
content: Quote from: NiHaoMike on September 09, 2022, 03:55:30 amThanks!I found the CMS solution from ABB:https://new.abb.com/low-voltage/products/system-pro-m/measurement-products-for-din-rail/circuit-monitoring-systemsEach sensor is about 50$ and the controller is 400$. The controller has SNMP which should work as expected.
3D lens microscope camera? Anyone tried this technology? - Page 1
Forum section: electronics / general

author: ItsumiMario
author_rank: Newbie
timestamp: June 29, 2022, 06:28:17 pm
content: https://youtu.be/T_J6ZKVrTX4?t=86Came across this thing today, I’ve never seen anything like it personally. Allows you to “spin” your point of view around a component to get a 360 view of the joints. Seems really cool, wondering if anyone here has ever had any real-life experience with this kind of technology, how practical it is, etc.

author: thm_w
author_rank: Super Contributor
timestamp: June 29, 2022, 10:29:12 pm
content: Looks great for inspection, completely useless for soldering or rework. Really low working distance with all that stuff in the way.

author: ItsumiMario
author_rank: Newbie
timestamp: June 29, 2022, 11:14:57 pm
content: Quote from: thm_w on June 29, 2022, 10:29:12 pmGood point, I could see myself knocking into the mirrors. I found a different one that looks like it has better working distance:https://youtube.com/shorts/3hU78sDmbGQ?feature=shareLooks like there’s maybe at least 4cm of clearance? I’d like to see Dave take one of these for a spin.
Motor and pump specification on the cheap solder gun station (ZD-915, SS-331H)? - Page 1
Forum section: electronics / general

author: aronake
author_rank: Frequent Contributor
timestamp: July 03, 2022, 02:26:29 pm
content: Hi,Do anyone know specification or part of the specification of the motor and vacuum pump of the cheap commonly used desolder gun stations that are sold in some different boxes but are basically the same design? Pros Kit SS-331H, ZD-915, etc? Voltage? Power? Liter / min? Suction pressure? Etc?I have a Proskit but no text on the motor or pump with specification.
Ikea 18650 batt box! - Page 1
Forum section: electronics / general

author: MT
author_rank: Super Contributor
timestamp: June 24, 2022, 01:46:23 am
content: If you are desperate and quickly need a 18650 battery sort of box for only0.99centthe IKEA "skogsviken" neatly holds 10 of these, unfortunately no lid butyou can stack them and as such make a big batt pack.https://www.ikea.com/nl/en/p/skogsviken-tray-black-90473486/

author: Ed.Kloonk
author_rank: Super Contributor
timestamp: June 24, 2022, 03:42:09 am
content: On sale in my country for $2.00
UNofficial Hakko T18 tips, what's out there? - Page 1
Forum section: electronics / general

author: taste_tester
author_rank: Regular Contributor
timestamp: June 12, 2022, 01:04:02 am
content: A long time of using JBC style Knife tips (2.5mm Knife) made it easily my favorite soldering tip.When I need more space or power I would switch to the 5mm Knife, but rarely pick a conical or chisel tip anymore.Now I know Hakko only offers one Knife tip for the T18 series, the T18-K, 5mm knife.But, I really want a 2mm or 2.5mm Knife for T18.I know JCD on Aliexpress sells tips that fit T18- they sell cheap direct plug in irons that basically use the FX-8801 design.But i don't know how good I feel about using soldering tips coated blackThere are also a lot of other sellers on sites like Aliexpress selling their own brands of T18 compatible tips.I've seen smaller size knife tips from some of them.Just curious if anyone has experience with Non-Hakko tips, or any particular recommendations.

author: Shock
author_rank: Super Contributor
timestamp: June 13, 2022, 03:39:40 am
content: Plato make (apparently good quality) compatible tips, not sure if they have extended the range though.Another option is diy re-plate your own modified tips. Could practice on some dead or chinese tips. But when you have your technique down use the genuine Hakko larger blade/knife and file then sand it down to size. Saw a video how the cheap chinese ones were made, they were just grinding down some pre made alloy and not even plating them.You can bet they will sell a fake copper tip as well. Don't get me wrong it's ok to practice on a few cheap chinese tips but there is no way they will out perform Hakko. Even if it appears to be amazingly thermally conductive it's probably a shit metal aluminum alloy which dissolves after so many thermal cycles. I would not trust a blackened tip either, too easy for them to use cyanide blacking or some toxic coating.

author: jonpaul
author_rank: Super Contributor
timestamp: June 13, 2022, 09:55:46 am
content: Plato out of biz for many years.We use only genuine Hakko tips very high quality and long lasting.All the cheap Chinese clones are junk.Just my experience,Jon

author: rdl
author_rank: Super Contributor
timestamp: June 14, 2022, 10:23:42 am
content: I've had good results with Plato products over the years. As far as I can tell they're still around. A subsidiary of Techspray, acquired in 2003. Techspray has since become part of ITW.

author: taste_tester
author_rank: Regular Contributor
timestamp: June 21, 2022, 02:07:37 am
content: I saw Plato tips for sale at Hisco/Kimco, but couldn't find much info about them when googling around, so not sure if they are old stock or what the deal is, at any rate the Plato knife style tips are no cheaper than buying real Hakko so not sure I will go for those.Bought 6 more Hakko branded tips today, probably won't bother with Plato.Thank you everybody
be careful if you have to repair the best BST-863  - Page 1
Forum section: electronics / general

author: mastershake
author_rank: Frequent Contributor
timestamp: June 21, 2022, 02:13:47 am
content: the lcd touch display pcb literally falls apart with almost any kind of heat. the traces just fell off the board. i dont think ive ever seen this bad of a pcb quality. i could have stared the traces down and they would have fell off. pads gone. ive been soldering for 30 years never seen anything so bad. its that bad.on another note would anyone have one of these that doesnt work they would be willing to sell the lcd and board or the whole front pcb?? i sent best a few emails and never heard back. its a shame it was a great unit until today. ill see about running trace wires somehow but im afraid to even touch this pcb with any heat. im hoping its just a one off issue. i can replace it for around 200$ but i dont need the whole unit.

author: taste_tester
author_rank: Regular Contributor
timestamp: June 21, 2022, 02:27:47 am
content: This looks like a unit i've seen sold under several different brand names. BEST is just one of those "companies" that slaps a logo and model# on a pre existing item and call it a day. If you message a lot of Aliexpress/Banggood/Etc sellers you may find someone willing to sell you just the screen. Checking youtube reviews of the BST863 should help you find the same thing under a few different names I am sure i've seen it under at least one other name but don't remember unfortunately. good luck.

author: mastershake
author_rank: Frequent Contributor
timestamp: June 21, 2022, 03:15:31 am
content: well as i was checking this response i ended up getting a reply. i will update what they say.

author: mastershake
author_rank: Frequent Contributor
timestamp: June 23, 2022, 09:31:44 pm
content: parts ordered. shipping was insane though cost wise. once they get here ill update. only 13$ for the touchpanel and board but almost 60$ for shipping they only use dhl express

author: SteveyG
author_rank: Unknown
timestamp: June 26, 2022, 12:03:26 pm
content: Quote from: taste_tester on June 21, 2022, 02:27:47 amI don't believe there to be any identical model under a different brand for the 863.

author: mastershake
author_rank: Frequent Contributor
timestamp: June 27, 2022, 02:37:35 am
content: correct there was none that i could find. the lcd pcb traces literally FELL apart to the point where id need another one or a schem to know where they go to. if i sneezed on it they would come off. i did order another one when i get it im going to take some nice high res pics of the traces in case i have an issue again so i know where they all go lol.
CyberPower 8 Outlet Power board - Page 1
Forum section: electronics / general

author: hoshi
author_rank: Newbie
timestamp: June 13, 2022, 04:20:20 am
content: Hey folks,There's a power board that's quite popular on Ozbargain but it's recently got some flak for being bad. E.g.https://www.ozbargain.com.au/comment/12260099/redirAs an average consumer, it's hard to make out the truth. Has anyone done a teardown on one of these and compared it to similarly priced products?
Any one tried the aixun p2408 power supply? - Page 1
Forum section: electronics / general

author: hwm1996
author_rank: Newbie
timestamp: June 09, 2022, 05:09:30 pm
content: Hello I started to learn how to learn basic electronic repairing recently and would like to find a budget DC power supply. I looking for compact size power supply as the the space is limited and it leaves me few choices. I almost ordered toolkitrc p200 before I read some of the users on this forum burn their units due to short circuit. Another one I found is the aixun p2408 but there is no review on it . Could anyone give some opinions on this model? Thanks!
USB Power supply test web site - interesting content - Page 1
Forum section: electronics / general

author: Fraser
author_rank: Super Contributor
timestamp: June 14, 2022, 10:16:09 am
content: I stumbled upon a web site that contains many tests and teardowns of USB power supplies.https://lygte-info.dk/info/ChargerIndex%20UK.htmlThe tests, teardown sand authors comments show what a minefield the USB PSU market is for the buyer !The really scary issues include the use of non Y spec capacitors between primary and secondary sides and insufficient creapage distances. Basically, you can buy a nasty cheap or fake USB charger and take your life in your hands. Even some branded units have safety issues according to the comments on the site.The site has a section that describes what is found within a typical USB power supply, what cost savings are commonly made in cheap units and the dangers of unsafe component types used in some….. such as 1000V ceramic capacitors that are not safety rated Y2 types.https://lygte-info.dk/info/SMPS%20workings%20UK.htmlThe voltage sag and current capability testing is also interesting to see. Well worth a visit.Fraser

author: BBBbbb
author_rank: Unknown
timestamp: June 14, 2022, 10:23:51 am
content: I think it's been featured here a few times in various discussions and (I'm not quite sure) the person behind it is/was on this forum as well.Great resource, I always check it out when looking for new chargers.

author: tunk
author_rank: Super Contributor
timestamp: June 14, 2022, 10:25:59 am
content: He's a eevblog member, HKJ.You could also look at some of DiodeGoneWild's videos:https://www.youtube.com/playlist?list=PLfUGOPyKWwiriWhjmdtvjBw_J7X_X5OnUAnd Big Clive recently tore down one:https://youtu.be/rwEh4jsVew0

author: Gyro
author_rank: Super Contributor
timestamp: June 14, 2022, 11:15:23 am
content: Quote from: Fraser on June 14, 2022, 10:16:09 amThe worst bits are the ones youcan'tsee! Some of DiodeGoneWild's videos, including transformer teardowns, are quite horrific, with single insulated enamelled primary and secondary wires crossing each other, and in one case, no inter-winding tape of any description!*You don't see triple insulated wire in any of them, other than verified genuine main brand PSUs.It's getting to the point where you need to buy two adapters, one to completely tear down and one to (hopefully) use.EDIT:*(Transformer starting at 11:00)

author: tunk
author_rank: Super Contributor
timestamp: June 14, 2022, 03:57:18 pm
content: There's also this youtube channel:https://www.youtube.com/c/ChargerLab/videos