hybridfree/eevblog-posts huggingface dataset:
Is the JBC cartridge stand electrically connected to the station? - Page 1
Forum section: electronics / general

author: kelemvor
author_rank: Regular Contributor
timestamp: December 16, 2020, 03:24:33 pm
content: Is theJBC SC-Celectrically connected to the solder station? I'm using CD-1BQE if that matters. Trying to decide what to do for tip storage, as I've got 10 tips now and it's kind of a messy situation. The SC-C manual does not say. I'm sure I could solder a bonding wire onto it if needed but I was kind of hoping JBC included that feature given the extreme price tag.

author: 2N3055
author_rank: Super Contributor
timestamp: December 16, 2020, 03:47:14 pm
content: Quote from: kelemvor on December 16, 2020, 03:24:33 pmWhy would tip holder be connected to anywhere?

author: kelemvor
author_rank: Regular Contributor
timestamp: December 16, 2020, 05:00:17 pm
content: The integrated holder/changer (room only for two tips) detects when you're making contact with it and removes power from the iron while in contact. Same with the iron holder in the main stand.I guess if the stand doesn't have a connection from the manufacturer, it would be simple enough to solder on a bonding wire.Actually, contact with the stand results in sleep mode until a configurable timeout then hibernate. Contact with the integrated holder goes directly to hibernate.Sleep mode keeps the iron warm (I have mine set for 150c). Hibernate doesn't heat the iron at all.I've come to really like the sleep/hibernate features. I don't worry nearly as much about leaving my iron on by mistake.
JBC Hot Air soldering station question - Page 1
Forum section: electronics / general

author: MSS
author_rank: Newbie
timestamp: February 01, 2020, 09:06:00 am
content: Hi!I'm looking for photos of any JBC Hot air stations(JTSE, TESE, JT-2A, JT-2B..) with open case, interested in both 300w and 700w versions.Their TE-TB and TE-TA "Precision Heater hose set" have single version for all voltage range : 100/120/230V, so i think that main control unit have power transformer inside. But their 700W Hose set have two versions: JT-T1A(100/120v) and JT-T2A(230v). JTSE, TESE, JT-2A, JT-2B - all weight more than 4.5kg. So i want to know - does any of them have power transformer inside or not?

author: Kean
author_rank: Unknown
timestamp: December 14, 2020, 10:02:56 am
content: I know this is an old topic/request, but I just happened to be looking into this as I recently got an ex-demo JT-2A.If you look in the manual for the JT series high power hot air station, the heating element in the handpiece is shown to be mains powered.I've attached a couple of internal photos. Only a couple of small PCB mount transformers.Most of the internal space is used by the blower and suction units, which also appear to be mains powered.
temperature unstable when using ksger STM32 V3.1 with hakko tips - Page 1
Forum section: electronics / general

author: Snack_Mr
author_rank: Newbie
timestamp: December 24, 2020, 02:46:36 pm
content: hi, i have some problem when using hakko tips to ksger soldering station.the problem is unstable temperature.the temperature is stable when using the ksger tips. but using hakko tips, temperature is becomes very unstable (±20 ℃).I guess there is a problem with the PID value. So I tried adjusting the PID value, but it didn't work.Does anyone know the PID values when using hakko tips? Or is there another way to solve this problem?[I tested with these tips.]KSGER - BL, B2, C08HAKKO - K, KU, D4

author: totalnoob
author_rank: Regular Contributor
timestamp: December 24, 2020, 06:18:19 pm
content: You probably already tried this if you already messed with the PID, but you did ensure the correct tip was selected, right? I.e. ensure that the "K" tip was selected when you inserted the K tip into the handle? I don't have any Hakko tips to try, but I found it, just like you did, to be accurate with the clone tips.If you check the CFW thread, someone else is having this issue with the custom firmware, so this may rule out a firmware issue and it may be a hardware issue with the V3.1 board.

author: DavidAlfa
author_rank: Super Contributor
timestamp: December 26, 2020, 07:13:56 am
content: Yeah I had the same problem in the firmware I'm developing, it's something related to some tips, I also had the issue with few cheap non genuine ones.They need a really long time to recover after the transistor switches off to give accurate readings.It seems that if you read the temperature too fast, you will read a way lower temperature than real! Very strange.When it reaches the desired temperature and turns off the output, the tip will have time to recover and then the reading will suddenly rise 20-40ºC.So the controller lets the tip cool down...and when it switches the power again, the reading decreases again!And it will keep going up and down without control. Looks totally like wrong PID settings. But it's not!Start reading here for more details...https://www.eevblog.com/forum/reviews/stm32-oled-digital-soldering-station-for-t12-handle/425/
Ersa i-Con 1V differences - Page 1
Forum section: electronics / general

author: Soong
author_rank: Newbie
timestamp: December 09, 2020, 10:57:40 am
content: Hi,I’ve been using a cheap soldering iron I got as a gift a while ago and I want to upgrade to something better. I want to avoid upgrading again later, but I don’t mind spending a little more money now because I will use this tool for many years to come. So I’ve been looking into the Ersa i-Con 1V because I don’t need a dual station and I like Ersa as a brand. On their shop, they list two different versions, though, the 0IC113V0C und 0IC113V. There is very little information available about the former, except that it’s more expensive, availability is worse, and the product name itself says it has D-SUB, but it doesn’t even say what it’s used for. It doesn’t really say if the 0IC113V even lacks D-SUB, so it’s possible that one is just an older model. I just want to make sure I buy the right thing. Ersa hasn’t answered my email and since I had seen productive discussions about other soldering stations here, I was wondering if any of you know the difference or can point me in the right direction.

author: bateau020
author_rank: Frequent Contributor
timestamp: December 09, 2020, 04:23:48 pm
content: The datasheet (https://www.kurtzersa.com/fileadmin/medien/members_final/Electronics/1_Technische_Datenblaetter/1.1_Tools/Ersa_Datenblatt_-_i-CON__1V___2V_eng_web2.pdf) says "Optional with interface to control heating plate and fume extraction unit". Cannot confirm through, I only have the "non-interface" unit.

author: Soong
author_rank: Newbie
timestamp: December 10, 2020, 12:50:40 pm
content: Thanks! That piece of information helped me solve the puzzle! It’s too bad we have to take guesses because Ersa’s documentation is inconsistent. For example, for the 0IC113V0C, they don’t list the option to update, but I can’t imagine it doesn’t have that feature.
Shelly 1 failure. esp8266 wifi relay. tasmota firmware - Page 1
Forum section: electronics / general

author: oliver602
author_rank: Regular Contributor
timestamp: December 06, 2020, 06:34:55 pm
content: I have burned two Shelly 1 wifi relays when trying to connect them to a 30 W water fountain pump. They failed after switching the load 3 or 4 times. Both seam to have failed the same way. There is a short somewhere on the PCB. One of the devices worked just fine switching a 500W heater for 2 weeks prior.I used a USB/serial adaptor to flashtasmota. I since found out the TX/RX on the adaptor I have outputs 5 V (~2 mA) even when 3.3 V power is selected, would this be a problem?BTE13-009I put the Shellys in a UK surface mount box with a single light switch connected to the shelly switch input. Crude drawing below.I am tempted to try a new Shelly with stock firmware to find out if it is my USB/Serial converter somehow causing damage. Or is it possible the Shelly just can't handle an inductive load? Or it can't handle an inductive load only after connecting a suspect USB/Serial adaptor?

author: oliver602
author_rank: Regular Contributor
timestamp: December 13, 2020, 03:27:10 pm
content: I think the Shelly 1 is being destroyed by a transient from switching off the water pump. Possibly through the SW terminal. I have noticed the device reboot while switching the pump off while having the SW connected to live(through the light switch on the wall).Is there something I can safely install in the switch box to clamp the voltage?
Casio FX-9860GIII Awesome product! - Page 1
Forum section: electronics / general

author: DiTBho
author_rank: Super Contributor
timestamp: December 07, 2020, 05:54:17 pm
content: I owned a very old FX-7500G and when I told it to a dude in Estonia, he sent me one of these new calculator, so I spent the last two days exploring all the new features, and found this calculator is simply awesome!Really! I love the Eng display, which is able to both accept and returns values in engineering notation rather than scientific notation, it's up to your choice and it's very easy and fast to set up.I also love the new Spreadsheet capability that accepts data from the graph-plot module, as well as from the table-module.A new incredible feature is the MicroPython module! At the moment is limited, and there are only two packages you can import, math and random, there is no sys, machine, uos, or anything other useful modules, and there's no access to the screen other than REPL text characters so no graphics from μPy, but things promise very well for the near future.CASIO has already promised new up-gradable features and a new SDK for this calculator, so the final user will be able to create custom applications in C/C++.I used the keyboard, which is fantastic, but it's also easier to connect the calculator to your PC, create the file on your PC, and ship it over the USB cable. Program files are limited to 300 lines each of max. 255 chars.Very well done, I love my new calculator

author: DiTBho
author_rank: Super Contributor
timestamp: December 13, 2020, 01:41:50 pm
content: Has anyone already played with CASIO uPython?
Manufacturing an Atten AT852D hot air station - Factory video - Page 1
Forum section: electronics / general

author: killingtime
author_rank: Regular Contributor
timestamp: December 09, 2020, 12:58:46 pm
content: Hi,I was looking for reviews of some low end hot air stations and came across the video below. It shows how they put together the AT852D hot air station at the factory.Something I notice about air stations in general, it that they either use centrifugal fans (quiet) or diaphragm pumps (louder). All the diaphragm pumps seem to have a white expansion bottle between the pump and air outlet. I assume this is to trap condensation, and prevent it from collecting in the hose after the outlet in humid environments. I don't see these bottles on the centrifugal blowers.Is there any preference to pump types on air stations? If there's no difference, the blower type is simpler and has less to go wrong.For comparison, there's an open case review of a Quick 857DW+ air station here, that uses a centrifugal blower....
Connector for DIY Mitutoyo digimatic cable? - Page 1
Forum section: electronics / general

author: bitwelder
author_rank: Super Contributor
timestamp: March 02, 2017, 09:40:16 pm
content: Is there some connector that would fit for a Mitutoyo 'digimatic' SPC cable?The pin pitch seems to be 1.6 mm. Connector is about 10 mm wide, and 4 mm high.Googling around the best DIY attempt I found was some 3D-printed shell, but I still wonder if there is some ready-made connector available via Digikey/Mouser/etc. that could be used for that (as the official Mitutoyo cable has a ridiculous price for its value)

author: amyk
author_rank: Super Contributor
timestamp: March 03, 2017, 12:26:03 pm
content: Something like this?https://www.bourns.com/pdfs/70AAM.pdfThe pitch is wrong, but maybe you can find similar products to that. The keywords are "spring contact connector".

author: bitwelder
author_rank: Super Contributor
timestamp: March 03, 2017, 03:29:26 pm
content: Thanks, at least having a proper name for the type of connector definitely would help with the search.

author: amwales
author_rank: Regular Contributor
timestamp: December 05, 2020, 03:31:09 pm
content: I've been googling for a cheap cable or connector too.Did anyone ever find a suitable connector?

author: Non-Abelian
author_rank: Contributor
timestamp: December 07, 2020, 04:58:02 pm
content: There are lots of those cables on ebay for as little as $40.00. However, it looks like the cable alone is not all you need. There's also another little box that goes with the cable that converts the caliper data to keystrokes. I assume you can avoid that if you can figure out the raw data format. There is a complete setup with cable and box on ebay for $70.00 (Not made by Mitutoyo, though).

author: amwales
author_rank: Regular Contributor
timestamp: December 08, 2020, 06:28:31 pm
content: Thanks, I was intending on making a device that acts as a USB keyboard, press a button and it reads the data from the calliper and simply outputs the keypresses for the corresponding digits. The protocol is well defined and available, I didn't want to spend $40 on the cable as all I really need is the connector. So, if anyone knows what that connector is and where I may be able to find one, that would be awesome
Mechanical Part Identification - Page 1
Forum section: electronics / general

author: bostonman
author_rank: Super Contributor
timestamp: December 31, 2020, 01:40:48 am
content: I have a few of these parts (see attached) and don't know what they are called.When turning the threads, the collars expand. I looked on McMaster Carr and thought it was a shaft collar, however, from what I can tell, those tighten on a shaft.

author: JohnnyMalaria
author_rank: Super Contributor
timestamp: December 31, 2020, 01:44:47 am
content: This?https://www.nriparts.com/products/trantorque-6202240/89647?item_id=289646

author: bostonman
author_rank: Super Contributor
timestamp: December 31, 2020, 01:56:04 am
content: Yes, that's it. I can't believe you found it that quickly.The website you provided doesn't give any description. Knowing what it's called, I looked on McMaster Carr again because they usually have good information and their Trantorque states it tightens on the shaft too. This one doesn't look like it tightens (I don't have a shaft that fits this to test it), just expands.

author: JohnnyMalaria
author_rank: Super Contributor
timestamp: December 31, 2020, 02:11:02 am
content: I used Bing's Visual Search. I pasted the link to your image, cropped to just the part and up popped the result

author: bostonman
author_rank: Super Contributor
timestamp: December 31, 2020, 02:14:31 am
content: Wow, I just learned two things.I didn't realize Bing (which I never use) has a visual search.
Starlink phased array dish teardown. That's some amazing tech! - Page 1
Forum section: electronics / general

author: wraper
author_rank: Unknown
timestamp: November 22, 2020, 05:07:42 pm
content: Quite destructive. Supposedly there will be part two, not much to see about the most interesting so far.Replaced the video since another guy did a proper teardown of the 'Dishy McFlatface'. Wow, that's some serious technology!

author: wraper
author_rank: Unknown
timestamp: November 27, 2020, 11:20:41 am
content: Video updated. Some serious RF magic. Supposedly it has over 1000 transceivers.

author: Marco
author_rank: Super Contributor
timestamp: November 27, 2020, 05:40:56 pm
content: Custom i2c phase shifters? Probably narrowband or I'm sure it would need export licenses

author: mikeselectricstuff
author_rank: Super Contributor
timestamp: November 27, 2020, 05:44:52 pm
content: It's now reportedly on its way to Shahriar for deeper analysis

author: rs20
author_rank: Super Contributor
timestamp: December 02, 2020, 05:24:56 am
content: Wow, that has a similar number of elements as a phased array used for RADAR purposes; I never would have thought this sort of degree of phased array stuff would end up in a consumer product:I wonder: once the network is more fully established, I wouldn't be surprised if they do some costcutting on the final, production Dishies. E.g. fewer elements.Also, I wonder if hackers will convert Dishies into phased array RADARs -- Dishy can send, Dishy can receive... maybe both simultaneously -- that's all there is to it, right?I can't wait to see the results of that experiment!

author: 2N3055
author_rank: Super Contributor
timestamp: December 02, 2020, 07:08:23 pm
content: Quote from: rs20 on December 02, 2020, 05:24:56 amMany new military phased array radars have ECM and communication mode where they behave exactly like this antenna... I would think this one can act exactly like any phased array radar with propper software, and taking into consideration that is is very low power compared to radars on combat planes. Which makes all the difference.
AOYUE T002? what is it useful for? - Page 1
Forum section: electronics / general

author: DiTBho
author_rank: Super Contributor
timestamp: November 29, 2020, 03:17:23 pm
content: Aoyue T002Probably a "silly" question for pro guys here, I am in the process of buying some new soldering iron tips for my Aoyue Station, and got a -20% discount for the T002, but I haven't yet understood this product.What is it useful for?

author: CJay
author_rank: Super Contributor
timestamp: November 29, 2020, 04:35:40 pm
content: What it says on the side, they're SMD rework tweezers, handy for removing passives.

author: ataradov
author_rank: Super Contributor
timestamp: November 29, 2020, 07:40:26 pm
content: It is mostly a gimmick. If it comes in a box - fine, otherwise - don't waste moeny.

author: CJay
author_rank: Super Contributor
timestamp: November 30, 2020, 05:51:20 pm
content: I find the Pace ones I have really useful if I'm doing a lot of SMD rework or working on a packed board, ymmv of course, everyone has their own preference with tools.

author: MarkL
author_rank: Unknown
timestamp: December 02, 2020, 06:03:24 pm
content: I have one of these Aoyue SMD tweezers. Don't waste your money on it. My experiences with it:- Takes forever to heat up compared to an iron.- The hinges have a lot of play and the tips don't meet up consistently.- The tips have a long taper and don't transfer heat very well. Unsoldering parts connected to significant copper paths can be difficult to impossible.- The two heaters are slightly different in heat output, resulting in different temperatures for the two tips.I've reverted to the method of using two irons, one on either side of the component, or a wide tip to get both sides at the same time, or hot air depending on the situation. The tweezers looked like a good solution, but bad implementation.
Pace Thermojet Handpiece - Page 1
Forum section: electronics / general

author: Non-Abelian
author_rank: Contributor
timestamp: December 07, 2020, 05:25:44 pm
content: I have a question for the Pace contingent. I recently picked up a Pace ST-145 with an SX-80 handpiece for desoldering. I assume the pressure port is for something like the Thermojet Hot Air handpiece? If so, does anyone know if the current Pace handpieces are backward compatible with the older units like the ST-145? Mine is a SensaTemp unit and I do know that I need the SensaTemp and not IntelliTemp model. Thanks!

author: asis
author_rank: Frequent Contributor
timestamp: December 08, 2020, 02:48:18 pm
content: Hi,Check out the differences between ST25 / 45 and ST125 / 145.https://paceworldwide.com/sites/default/files/2019-07/Sodrtek%20ST%20125%20Manual.pdfST125 / 145 products have a compressor with vaccuum / pressure ports (even two - HiFlo & LoFlo) - ST25 / 45 does not, but cascade control is foreseen when pairing through the TEKLINK Receptacle port.That is - the use of a high-performance compressor (HiFlo) ST125 / 145.Moreover, - the second compressors (on the right) is designed to work in conjunction with the PICVAC PV65 vacuum tweezers for separating products from the PCB during dismantling, which is turned on / off with the button from the bottom.Its performance is low.At the same time - the port on the left can serve both TJ70 (pressure) and SX80/90/100; TP65 instruments (vaccuum).If you are using a SensaTemp instrument, it has a black connector cover.IntelliHeat - blue.Or a matching adapter is required - SensaTemp / IntelliHeat.I don't have an ST145, but I suspect the compressor is the same as the PRC2000 MTB250 / 350.Pay attention to the solder removal tips " endura "- for Sx80, but can be used for SX90 / SX100 with some modification.

author: Non-Abelian
author_rank: Contributor
timestamp: December 08, 2020, 04:22:11 pm
content: Thanks for the info. I finally got tired of using solder wick or those spring plunger things for years and years. Fortunately, I won't have to worry about tips for a while. When I bought the ST-145/SX-80, the guy that sold it included something like 10 tips of various sizes, seals, cleaning tools, and extra filters. I had sent an email to Pace before posting here and asked if the current Thermojet handpieces were compatible and all he told me was that the ST-145 is discontinued (which I already knew, or I wouldn't have been asking that question). I replied to get an answer to the question I asked, but I never received a reply. Thanks again for the info.
Battery Powered Spot Welder - Page 1
Forum section: electronics / general

author: bobcat2000
author_rank: Regular Contributor
timestamp: November 23, 2020, 05:10:50 am
content: Good Evening,I found one of these selling on Amazon and Ali Express. It is a battery powered spot welder.What is the chance that these things will burn down my house or get me killed? If not, have you tried to use one of these? Does it work ok?Thanks!https://www.aliexpress.com/item/1005001693809034.html?spm=a2g0o.search0302.0.0.4b903bf80BYzVa&algo_pvid=605d211d-5a55-4373-a240-4bca51f078e8&algo_expid=605d211d-5a55-4373-a240-4bca51f078e8-40&btsid=0bb0623116061079592805658ee3da&ws_ab_test=searchweb0_0,searchweb201602_,searchweb201603_https://www.amazon.com/Handheld-Welding-Recharge-Adjustable-Portable/dp/B08DQS25FH/ref=sr_1_6?crid=5S30B4Y2N9HA&dchild=1&keywords=18650+spot+welder&qid=1606108123&sprefix=18650+spot%2Caps%2C244&sr=8-6

author: eKretz
author_rank: Frequent Contributor
timestamp: November 23, 2020, 07:05:56 am
content: One of our members designed and sells one that won't burn your house down. Search for kWeld.

author: bobcat2000
author_rank: Regular Contributor
timestamp: November 23, 2020, 07:02:45 pm
content: Quote from: eKretz on November 23, 2020, 07:05:56 amYes, I already checked kWeld before I found those two portable ones. I think Ali Express is already selling a bunch of clone of the kWeld for $10 already.These two I found are interesting. They put a battery pack inside the unit. You charge it with a USB-C charger.

author: eKretz
author_rank: Frequent Contributor
timestamp: November 30, 2020, 06:13:58 pm
content: I can't imagine they will be able to provide very good power delivery with such minimal battery. I use a full sized car battery for my spot welder.
Anet A8 3D Printer - Page 1
Forum section: electronics / general

author: bostonman
author_rank: Super Contributor
timestamp: November 25, 2020, 04:42:09 am
content: Does anyone know where to purchase spare (original) frame pieces for the Anet A8? Some of mine have cracked and I'd like to replace them.I contacted Anet sales and they provided a quote for parts, and, when I went to place the order, was told their stock is empty. It was a bit frustrating because we exchanged a few emails, worked through the cost for parts, and then the plug got pulled.

author: towe96
author_rank: Contributor
timestamp: November 25, 2020, 09:39:59 am
content: Try looking for people selling AM8's in your area. They may still have the old acrylic frame laying around.
"cheap" Industrial <0C Manangt 1000Mb Switch? - Page 1
Forum section: electronics / general

author: Lord of nothing
author_rank: Super Contributor
timestamp: November 20, 2020, 01:45:26 pm
content: HiLike the Title say I looking for a cheap Industrial <0C managed 1000Mb Switch.For an Outdoor Box I need a 1000MB Switch who support some kind of Port Security.Since the are outside (even in a enclosed Box) I dont know if a moron try to get free Internet by Plugging in some Laptop. My IT Distributor offer me some who are way over that what I want to pay. I not intend to pay 500€ (+ Tax) for some...Does anyone know some better offer, Distributor for that?Thanks

author: jc101
author_rank: Frequent Contributor
timestamp: November 20, 2020, 04:51:02 pm
content: How many ports do you need?This one from Ubiquiti is only 5 ports, good to -20, and can be managed, PoE powered which may be handy.https://eu.store.ui.com/collections/unifi-network-routing-switching/products/usw-flex

author: Lord of nothing
author_rank: Super Contributor
timestamp: November 20, 2020, 08:13:59 pm
content: If I use only 2 Pis I need 3.The only think who not sound good is:QuoteI dont have one of them.QuoteAnd I dont see any port Security.

author: Monkeh
author_rank: Super Contributor
timestamp: November 20, 2020, 08:15:28 pm
content: You don't have.. the free software they link you directly to.A few moments of research shows it has both actual security (802.1X) and useless MAC filtering.

author: Lord of nothing
author_rank: Super Contributor
timestamp: November 20, 2020, 08:27:56 pm
content: https://dl.ubnt.com/datasheets/unifi/USW-Flex_DS.pdfthe Datasheet dont mention it.QuoteI dont want to run more Software on my Pc just to maintain a Switch who 2 Pi are plugged in.

author: jc101
author_rank: Frequent Contributor
timestamp: November 20, 2020, 08:38:23 pm
content: Take a look at MikroTik then, this would probably work for youhttps://mikrotik.com/product/netpower_lite_7r#fndtn-specifications
PACE ST25 Soldering Iron Base - Repair - Page 1
Forum section: electronics / general

author: southpacific
author_rank: Newbie
timestamp: November 17, 2020, 08:39:28 pm
content: PACE ST25 Soldering Iron Base - Repair.R27 FailedThe fault was that the iron took longer and longer to get up to heat (whereby the green LED flashes). Sometimes 10 minutes or more.Resistor R27 (270R) had burnt out and was at fault. This resistor appears to have been replaced before with a 1/4W leaded resistor soldered onto SMD PADS. Hence it stood out.Interesting... I purchased this iron new - so it must be a factory mod (or more likely a local distributor mod)(Australia is 240V AC where-as other countries are 220V AC). I have another ST25 iron which has a 1206 or larger SMD resistor mounted to R27's SMD pads (as per normal).This resistor must get hot!So I replaced this resistor with a (R27) 1W 270R resistor. Sitting above the PCB for thermal dissipation.Transformer replacement from 110V to 240VA "pre-owned" ST25 was obtained from USA. It contained a 110V US mains Transformer - which was unsuitable for Australian 240V use.Internet discussions were of it being a 30V 3A (90W) transformer.It appears to be somewhere between 20-30V Centre Tapped transformer. It swings +15V to -15V AC.It was replaced with a Jaycar MM2015 Dual Winding 12V/15V. The two 12V windings were used.The use of a SMPS was pondered. However, it appears that the secondary AC voltage is used directly and gets switched in and out for heating. So an AC Mains transformer must be used.The plot shows the original PACE transformer AC secondary as it connects to the PCB. Think of it as 15V-CT-15V (Centre Tap). The "sinusoidal" Waveform shows a 50Hz 0V to 15V excursion - both positive and negative.Luckily, this plot captures a second, slightly higher amplitude waveform. When the Green LED flashes ON, the waveform is 15V-CT-15V. When the Green LED is extinguished,the waveform is 17V-CT-17V.Be aware that the Jaycar M2015 transformer secondary has two independent windings. The transformer does not have a centre-tap - so the 0V winding on one winding must connect to the 12V winding on the other winding.12V - positive0V connected to 12V - common 0V0V - negativeRemoval of the Solder Pencil Cable connector.I had to de-solder the solder pencil cable PCB connector to allow removal of the PCB. This was easier done by rolling a ball of solder (using a wave tip) over all 6 pads - rather than individual pin de-soldering, that didn't appear to release the connector pins.It might be interesting to know whether the inner cylinder section can be detached from the outer front panel mount surround - so de-soldering wouldn't be necessary.I also noticed that years ago I had added stick-on rubber feet to my bases, as they'd slide around the bench.
Worth it to build KSGER T12 station with UL Power Supply? - Page 1
Forum section: electronics / general

author: Palisade
author_rank: Newbie
timestamp: November 24, 2020, 08:02:49 pm
content: Long time lurker, first time poster. I'm planning to upgrade from an inexpensive 25W Elenco soldering iron to a KSGER 2.1S, but I don't like the idea of the sketchy power supplies they normally come with. I thought about going the "mini" route, but I don't care for an external power brick.I can get the assembled KSGER STM32 2.1S kit for $48US here:https://www.aliexpress.com/item/32871815985.htmlOr, I can buy the 2.1S parts from KSGER and buy a decent UL-compliant Mean Well PS for ~$85US total.https://www.aliexpress.com/item/32909601271.htmlhttps://www.aliexpress.com/item/32844179319.htmlhttps://www.meanwell-web.com/en-gb/ac-dc-single-output-open-frame-power-supply-with-epp--120s--24However, I have a couple of concerns with this plan:1. I'm not sure how I would mount the Mean Well PS in the case since it's <83mm wide and wouldn't fit suspended in the slots. I considered drilling/tapping the bottom of the case for metal standoff screws, which I suppose would also serve as a viable ground for the case.2. Adequate ventilation, but I'm not sure if this is actually a concern for the Mean Well PS.I don't mind spending more to get a safer end result, but I'm wondering if the additional cost and work is just diminishing returns at double the cost.

author: thm_w
author_rank: Super Contributor
timestamp: November 24, 2020, 09:28:44 pm
content: You could get away with a smaller power supply if you want, that is rated 120W. Although oddly they rate it 6.25A (150W), peak?At most the T12 is going to take 75W, and then consider ~90% of the time the iron is sitting idle, so it shouldn't get too hot.Drill and put in some countersunk screws coming up from the bottom, then standoff, nuts on the top, would be one way. Or silicone/foam/glue it in place.If the assembled unit is properly grounded (case and the handle), and the fuse inside the inlet is properly rated (~1A), then there should be no real safety issue. These are things you can verify and mod for yourself.

author: BlackICE
author_rank: Regular Contributor
timestamp: November 25, 2020, 09:47:12 am
content: Why? With a few safety mods it works OK at a lower cost with less trouble. If it breaks down later you can explore a new power supply. Most likely unless you use it for a living more than 4 hours per day 5 days a week, it may last quite a long time. I just gave mine more clearance between the PCB and heat sink and grounded the front panel.Just ensure that you can't get electrocuted, and that the tip is well grounded. For the price even if it works for only 5 years not a bad deal.
Eakins Autofocus camera + xy stage + TinyG - Page 1
Forum section: electronics / general

author: charliex
author_rank: Frequent Contributor
timestamp: September 19, 2020, 06:17:31 pm
content: I was able to hookup my eakins microscope to a TinyG with the scripted auto focus and controlling the table from a script in the camera to do an automated XYZ scan.i just added the ftdio_sio.ko driver to githubhttps://github.com/charlie-x/eakins-cameraif anyone wants it.

author: lukego
author_rank: Frequent Contributor
timestamp: October 10, 2020, 07:04:58 am
content: That sounds amazing! I have the camera and hope to try this one day too now

author: lukego
author_rank: Frequent Contributor
timestamp: October 10, 2020, 07:53:31 am
content: Could you possibly show one of your scans? I would love to see how it looks.

author: charliex
author_rank: Frequent Contributor
timestamp: October 19, 2020, 06:45:13 pm
content: sorry about delayed response. this is a stitched image that i did from the first test which is just an XY scan,i haven't done a focus stacked stitched version yet. ended up down other rabbit holes.this is only a table thats double sided taped to a 3d printed stickvise mount so its pretty good , and i didn't spend a lot of time setting up the shot so it can be a lot better, and this was an auto capture

author: lukego
author_rank: Frequent Contributor
timestamp: November 17, 2020, 10:44:03 am
content: Sorry for my delayed response too!Hey that's a really nice result! I didn't understand at first because I couldn't see how to zoom on the imgur UI and it just seemed like a normal medium-res picture. I downloaded it and opened it locally though and I see it's high resolution.I'm starting to think about taking high-resolution focus-stacked pictures of PCBs. I have the Eakins autofocus but it doesn't seem very high resolution. I also have a Nikon DSLR and it seems like it should be possible to remotely control the focus on that to take a series of pictures to be focus stacked later? Here's what I'm reading:http://www.gphoto.org/doc/remote/
Mini Teardown Novastar GF-12HC / GF-12HT  PCB Reflow Oven - Page 1
Forum section: electronics / general

author: KG7AMV
author_rank: Frequent Contributor
timestamp: November 15, 2020, 01:47:16 pm
content: I just got one of these GF-12's for the shop..If anyone care to share any detailed manuals, pc serial hookup, etc. let me know.Detailed Photos of the Guts are On My Blog if anyone is Interested.Mini Teardown Novastar GF-12HC / GF-12HT PCB Reflow Oven

author: Kjelt
author_rank: Super Contributor
timestamp: November 15, 2020, 02:01:59 pm
content: A 68HC11 processor with an external 64kB prom that design is twenty years old or so ?

author: KG7AMV
author_rank: Frequent Contributor
timestamp: November 15, 2020, 02:54:39 pm
content: Yea, and the sad thing is they still manufacture it!From the posts I see the mfg is not kind about support or offering manuals or information so it is fair game to explore the depths of this appliance in my book. Also Like to figure out how to turn off the pesky pass codes LOL I have not been hit with the Profile lock Out yet.

author: Kjelt
author_rank: Super Contributor
timestamp: November 15, 2020, 06:16:12 pm
content: Well one good thing is that you can easily backup the firmware.Try that with modern microcontrollers

author: KG7AMV
author_rank: Frequent Contributor
timestamp: November 15, 2020, 09:38:25 pm
content: Looks like P4 above the 68HC11 may be an unpopulated programming header for the 68HC11. I will open it up again and take some more photos.I will research the 68HC11 and try and get a backup of that if if memory is correct there are disassemblers for the 68HC11.
Buying AC Servo Motors from China - Page 1
Forum section: electronics / general

author: ali_asadzadeh
author_rank: Super Contributor
timestamp: November 12, 2020, 12:36:07 pm
content: Hi,Finally I have found the resources to build a CNC machine! Now is the time to find and buy all the parts from china,First of all I wanted to buy AC servo motors from chinaI would like 400W, 1KW, 1.5KW and 2KW versions for my CNC,So our Chinese members any Idea about where to find good bang per buck motors, also I need ball screws and linear guides too, any hint regarding that would be nice too.I have around 1000USD budget for 5 Servo motors,Thanks

author: langwadt
author_rank: Super Contributor
timestamp: November 12, 2020, 12:54:58 pm
content: www.robotdigg.com?

author: ali_asadzadeh
author_rank: Super Contributor
timestamp: November 12, 2020, 02:10:28 pm
content: I'm trying to build a 5 axis machinePlease help me, I need your help, thanks

author: bill_c
author_rank: Regular Contributor
timestamp: November 12, 2020, 04:01:26 pm
content: I have used products from both of these before. If you are just sending pulse/dir to servo it should be fine, the instructions for sending it commands are not that great.https://www.vxb.com/http://www.dmm-tech.com/

author: ali_asadzadeh
author_rank: Super Contributor
timestamp: November 14, 2020, 09:01:39 am
content: I have found two links on Taobao, can you check them if they are ok, also can you tell them to contact meThe prices seems nicelink 1https://item.taobao.com/item.htm?id=611911832023&ali_refid=a3_430620_1006:1124545690:N:ZnekbffkIVJloj3j9ZrUkQ%3D%3D:4ce9d4c817d95f72824263d5a6433e1b&ali_trackid=1_4ce9d4c817d95f72824263d5a6433e1b&spm=a230r.1.14.6#detailLink 2https://item.taobao.com/item.htm?spm=a230r.1.14.20.66a425804k81vJ&id=615568568782&ns=1&abbucket=12#detail
SMT prototype board - Page 1
Forum section: electronics / general

author: chrisbrown
author_rank: Contributor
timestamp: November 12, 2020, 01:40:50 pm
content: This is a product I've been working on for a while. It's a surface-mount Manhattan-style board ideal for high-performance prototypes and one-off projects.Lots more info in the datasheet:http://cdn.protopad.ca/ProtoPad_Datasheet.pdfStore:http://www.protopad.caAs a demo, here's my most recently completed project - a stereo FM receiver:
Help repairing a flight controller - Page 1
Forum section: electronics / general

author: is-this-taken
author_rank: Contributor
timestamp: November 05, 2020, 10:52:10 am
content: Hi!I'm a newbie and I need some help figuring how to fix this flight controller.It will power on over USB but not from battery voltage.I tried looking for a blown voltage regulator, with no luck.The board takes 2s-4s (8-15v).

author: is-this-taken
author_rank: Contributor
timestamp: November 05, 2020, 02:21:24 pm
content: I'm having issues looking up components.AMGJ 456 looks like it could be involved but I only get Mercedes parts on google

author: amyk
author_rank: Super Contributor
timestamp: November 07, 2020, 03:15:11 am
content: AMGx+xxx is MP9943Usethe famous Russian site.
ATTEN APS3005Si: Schematic, pots replacement and meters adjustment [SOLVED] - Page 1
Forum section: electronics / general

author: Datman
author_rank: Regular Contributor
timestamp: October 22, 2020, 06:23:24 pm
content: Hi allMany years ago I bought a APS3005Si power supply. It works, but a current pot doesn't work well at minimum; also, I don't like the two "coarse" and "fine" pots. So, I'd like to replace them by only two multi turn potentiometers. The problem is that I would need a 55kOhm voltage pot and a 15kOhm current pot for nominal max voltage and current. Then I have to modify the circuit, changing some resistors to use standard value potentiometers.Does anyone have a schematic of it? I found a schematic, but it is different, because potentiometers have different values from mine: in my PS, voltage pots are 50kOhm and 5kOhm; current pots are 10kOhm and 5kOhm.Does anyone have also the meters schematic? If I had them I could adjust the meters, because there are only two trimmers, then I can't adjust zero and gain for the two instruments. I have to adjust some fixed resistors...Thank you allGianluca

author: Datman
author_rank: Regular Contributor
timestamp: October 28, 2020, 10:46:55 pm
content: Searching for the board number SAT7.820.688C I found the schematicI haven't found the meters schematic.

author: Datman
author_rank: Regular Contributor
timestamp: October 30, 2020, 10:10:18 pm
content: There are settings for max voltage and max current, then I should have no problems using a 10k and a 50k multi turn potentiometers I bought from Amazon for 26€/2 pairs. They are made in China (they aren't Bourns made in Mexico...), but they seem to be good:https://www.amazon.it/gp/product/B08FHW13HSBefore doing that, I developed a simple mod to adjust zero on the Ammeter: at low currents, ammeter showed 5mA more: i.e., 15mA instead of 10mA.1. Pull up pin 9.2. Insert 10 Ohm between the pin and the track.3. Solder 4k7 to pin 9.4. Connect a 4k7~10k "zero adj" trimmer between -5V (pin 1) and meter's Gnd (pin 3 or C10. It's connected to +VOut!).5. Connect the wiper to the other end of the 4k7 resistor.6. Adjust the zero adj trimmer for 0.000A with no load.7. Short output by a reference ammeter.8. Adjust current limit at about 2A on the reference ammeter.9. Adjust the original multi turn gain trimmer for same reading.10. Adjust current limit at about 5~10mA on the reference ammeter.11. Verify reading; adjust zero adj if needed.

author: Datman
author_rank: Regular Contributor
timestamp: October 31, 2020, 01:42:26 pm
content: It works!I also reduced output capacitance from 470uF to only 10uF, avoiding high current pulses when shorting in current limit. I'll check stability in all conditions with the scope.I tried adding a 100uF between the base of the driver and Gnd, but it slows down the loop and causes relay oscillation.
Programming 2532 eproms in the GQ-4X or MiniPro TL866ii Plus? - Page 1
Forum section: electronics / general

author: gbkd80
author_rank: Newbie
timestamp: November 06, 2020, 03:48:08 am
content: I've been trying to program 2532's and 2732's on this TL866ii Plus programmer for a synthesizer (OS update) for a couple weeks now and I just have not been successful, even with the hack of applying 25v to the Vpp from an external supply, or using the 2732 instead because it's actually listed in the supported devices. In fact, I am almost positive I either blew something up in one of the chips, or the programmer itself... so...I'm returning it and I ordered a GQ-4x because it 'says' it supports 25v on Vpp (presumably with an external supply?) but I'd like to know if anyone here has successfully programmed either the 2532 or 2732 in either of these programmers because I'm starting to waste money on supplies and the thrill of being able to accomplish this is starting to quickly fade. I bought some of those adapter boards to convert 2732 to 2532 pinout but I haven't even gotten to that point because even the 2732 will not program. I confirmed my file is good because I wrote it to a random 2764 I had laying around and it took with no issue.Can anyone shed some light on this?
Meross has anyone tested its watt readings ?  - Page 1
Forum section: electronics / general

author: MasterCATZ
author_rank: Newbie
timestamp: October 27, 2020, 08:17:53 am
content: I bought some meross smartplugs (MSS310AU)because I wanted some power monitoring on 3d printers and aquarium air pumpsno matter what I have tested I always have it reporting half the wattage that is being used ?300watts pumps are showing 150watts160watt pumps showing 80 watts1.5kw computer showing 750watts300watt 3d printer 150wattseven using an inverter running only 1 device is also 50% variation to what it is saying its outputting ...they are saying no one else is having any issues and that it might be because I am not running Incandescent lamps etc ...my current clamp metre / other watt meters are matching up ?
Quick 861dw real or fake? - Page 1
Forum section: electronics / general

author: 383666
author_rank: Newbie
timestamp: October 26, 2020, 07:37:17 pm
content: I have a question about this 861dw, is it real or fake?https://allegro.pl/oferta/stacja-robocza-na-gorace-powietrze-quick-861dw-9806769778inside look similar as in this video:https://youtu.be/N18ThsE_VBY

author: thm_w
author_rank: Super Contributor
timestamp: October 26, 2020, 08:42:13 pm
content: The only difference I see is it has a "Quick Tools" logo on the front. Otherwise it looks original.Is it a used item? The price for new one is $265 USD, so if its used, price seems reasonable:https://www.tequipment.net/Quick/861DW/Desoldering-Equipment/Rework-Stations/

author: 383666
author_rank: Newbie
timestamp: October 26, 2020, 09:51:40 pm
content: Yes, it's used. Thanks for help.
European source for plastic carrying boxes? - Page 1
Forum section: electronics / general

author: PartialDischarge
author_rank: Super Contributor
timestamp: October 26, 2020, 06:01:30 pm
content: I'm looking for boxes to carry electrical equipment, the normal stuff not super secure or airtight. Many to be found in China, problem is air shipping is expensive for bulky and lightweight items like this.So I'd prefer to find someone in Europe, anyone?

author: The Soulman
author_rank: Super Contributor
timestamp: October 26, 2020, 07:07:39 pm
content: https://www.peli.com/is one of the better manufacturers, if you google a specific model number you'll likely find many webshopsin your country selling it.Also Conrad and Reichelt should have similar products.

author: The Soulman
author_rank: Super Contributor
timestamp: October 26, 2020, 07:11:48 pm
content: Also here (assuming you are in Germany):https://www.thomann.de/de/universelle_taschen_und_koffer.html?oa=prd

author: themadhippy
author_rank: Super Contributor
timestamp: October 26, 2020, 07:31:14 pm
content: cpc in the uk carry a range of cases,for examplehttps://cpc.farnell.com/unbranded/17025-079-gpb/plastic-case-240x205x48-black/dp/SG33290?st=storage%20plastic%20baskets.

author: tooki
author_rank: Super Contributor
timestamp: October 27, 2020, 12:10:36 am
content: Pollin carries a decent selection. Within Germany and the neighboring EU countries, the shipping is reasonable.https://www.pollin.de/werkstatt/werkstattbedarf/sortimentskaesten-koffer/?sortPREIS=asc
Office Lighting - LED panels - Page 1
Forum section: electronics / general

author: WaynesWorld
author_rank: Contributor
timestamp: October 21, 2020, 01:41:58 pm
content: I need to upgrade the lighting in my home office. Its a solid gyprock on joists, ceiling so cannot be recessed.I currently have a 120cm T8 batten light with an 1800LM LED tube. Its not nearly enough. I really need at least double that at about 6000K.I like the panels Dave had in his lab but of course those are for suspended ceilings. If there was a frame available for them, or a framed version I'd love to know from where.I'm in Brisbane Australia, so not economical to get delivered from US or UK etc.Any suggestins?

author: Tarloth
author_rank: Regular Contributor
timestamp: October 22, 2020, 01:47:57 am
content: Change the LED T8 tubes for anyone with more lumen output, I not know australian distributors, but for examplehttps://www.amazon.com/Batten-Fixture-Lumens-Integrated-Warehouse/dp/B07VY284S2

author: eeviking
author_rank: Regular Contributor
timestamp: October 22, 2020, 01:46:34 pm
content: There are plenty of frames available for 60x60cm panels.Just google: led panel surface mount site:.auLedvance (Osram) also make some nice smaller panels from 12x12cm and up:https://www.ledvance.com.au/products/luminaires/professional-luminaires/downlights/downlight-slim-roundsquare/index.jsp

author: WaynesWorld
author_rank: Contributor
timestamp: October 26, 2020, 12:29:09 pm
content: Found a few locally that I thought were reasonably priced.Got a couple of Pierlite Gen 3's that offer 6.5K/3700L and am quite happy with the light output.