Don't blame the construction of that receiver as it's almost best you can get in early 80's in communist country where getting any parts (especially semiconductors) other than local made ones was almost mission impossible. Also any electronics was expensive as f!@# so it was probably repaired many times. BTW that speaker connector it is a 2 pin DIN, it's actually German standard used in 70's and 80's audio amplifiers across whole Europe.
that IS the standard DIN speaker connector for just about everything from the 60's in to the 80's you can still by them. www.clasohlson.com/no/DIN-kontakt/22-1644
@EEVblog Haven't seen those Speaker Connectors in decades. That's the old, european way to connect Speakers to the Amp. Pretty normal in Amps from the 70s, maybe even early 80s... Oh and 'Magnetofon' is probably the good old turntable/phonograph or however you want to call it.
22:45 the rack that those boards mounted into has 2 back-planes back to back, and the one that faces rear takes the smaller boards. The front takes the larger boards. I am not extremely educated on those systems, all I have done with them is dismantle them for recycling.
That is no ordinary c1980s tuner. As well as AM and FM it features longwave (Europeans used it for broadcasting - we use it for airport beacons) and a couple of shortwave bands (covers most of what you need but it appears not to go down to 5045 kHz which Ozy Radio just out of Sydney uses).
7 ปีที่แล้ว +2
Nice to read, Peter, that you are familiar with polish vintage home radio equipment. Receiver covered 40, 30, 17 and 15m bands (AM).
"not design for proper volume production" - lol maybe no but still it was in every house back in those days and i tell you they made thousand's of them
Dave, that M Tester is a component Tester that I think is very interesting device considering it's benefits to it's price ratio. Unfortunately the one you tested had a faulty display, but I am sure you will like it had it worked. I have couple of them and I use them often to test passive and active components. There are many video reviewers talking about them on TH-cam, have a look at them and you'll know what I mean. Thanks for your great effort.
I got a similar type with a better display. It is a very good tool to see if caps are bad. I have a atlas peak and that only tell me the capacity. For 10 dollars it's fine.
Dave isn't a PR agency. He gets around to opening stuff whenever he feels like it. Anyone sending him stuff with the expectation that he'll open it in time to give them free PR is being presumptuous and disrespectful. That wasn't exactly the case this time but I'm not sure why there was any sort of urgency implied in this case when he doesn't even live anywhere where that eclipse was visible.
Sarah Watt I've shared a private pist with Dave abiut my fitst electromechabucal inverter showing videos and schematics. Will he be late in reading it?
All the big chips on that compute module are commodity chips; the MV64460 is a support chip for the two PowerPC processors (which happen to be radiation hardened!). The big Tundra chip at 17:17, a Tsi107C-100JE, is a PowerPC bus interface chip. The large chips marked ATLANTA are part of a chipset designed by Lucent/Agere and manufactured by LSI which provides an ATM switch fabric; these chips in particular are packet buffers. The memory module on the voice processor board is most likely for the Atmel radiation-hardened PowerPC chip just below it.
Dave must be very highly charged to trigger those Controllino inputs! EN 61131-2:2007 ("Programmable Controller" standard) shows that for a state '1' digital input the pin should be driven greater than 15V and be sinking at least 2mA (type I, or 11V & 6mA for type II, 11V & 2mA for type III).... Given the noisy environment industrial products are expect to operate under, fast transient burst immunity conformance is an important step in avoiding intermittent and 'unexplained' problems.
Nah, got to disagree here, those little LCD transistor/LCR testers are awesome gadgets and impressively accurate for the price, as others have commented you really need to put a fresh battery on it and give it a chance. Not as good as a full on curve tracer but *really* handy little quick test gadget. Heavily documented on the EEVBlog forum too under $20 ESR tester I think?
The reason it asked you to turn off your mobile data was that Android 7.0 and 7.1.1 will not connect to a allow traffic through a wifi connection, when mobile data is present, that has no access to the internet.
About the "M-Tester": I had one of these and it's not that terrible. Once you put a good battery in (7,4V is still not good ;)), the LCD is fine in it works quite well. Who would use these? Someone, who is not willing to pay some hundert bucks just to get an ESR reading. I know this thing might not be accurate and not well designed but it WORKS - and to get an LCR/ESR-Meter for 6 bucks - I don't care about the rest.
DIN loudspeaker connectors, very common in the UK and Europe from the 70's through to the 90's. I always have a few suitable plugs for those in stock, as I often have to connect such stuff up. The original plugs had a Bakelite or similar high temperature plastic moulding for the pins, so it didn't melt when soldering. The type available now are normal plastic, so you have to be very quick soldering them, or the pins melt the plastic and alignment goes to hell!
The LMP plastic has been a problem for some time, not just on these connectors but also other DIN 41524 connectors including mini-DIN. Trick is to put them in a socket when soldering to them.
You have to read full doc for transistortester (the last one in video) ! www.mikrocontroller.net/attachment/143813/TTester_096k.pdf This thing is very, very useful for recognizing unknown parts, especially surface mount ones with cryptic markings.
That last Transistor tester / LCR meter is great. I have one. DAVE, your battery is FLAT, that's the reason it doesn't show properly on the LCD. It is very useful to quickly identify components and see the basic characteristics...
You connected the Controllino connection board wrong. You moved the top board a little bit on side when you were connecting it so you missed the half of connections ;) Try to reasemble it again.
Dave is too stuck up with all his $1k + test gear... The last thing you opened is actually a very handy tester for resistors, leds, transistors, capacitors, inductors etc.. it will tell you what type of transistor it is, and what leads are base, emitter and collector as well as many other things, and it surprisingly accurate. Anyway, for a hobbyist on a budget it is worth getting...
Gonna have to agree on this one "Why do these exist" because not everybody has access to a lab full of multi-thousand-dollar test equipment? They work perfectly fine for hobbyists and students, assuming you don't get one with a crapped out screen
Agree with that. I also have exactly the same type of transistortester from an Ebay. Got it in a case, and modded it to power it up from 18650 Li-Ion element. Also, reflashed a firmware for it. Very handy gadget to sort out bad caps, trannies, or even find out 'WTF is that unmarked little two pin thing'. Dave is too bold with all his lab testing gear.
By ""Why do these things exist" I was referring to generic unlabeled test boards like this. If the damn thing had a descriptive silkscreen label and such on it I wouldn't have said that.
Yeah Dave, this series of product happens to be one of the most discussed topics on the forum of all time, partly because there are way more versions, clones, and derivatives than you can wrap your head around! This particular one you got is probably bottom of the barrel compared to the current state of the art. www.eevblog.com/forum/testgear/$20-lcr-esr-transistor-checker-project/
Generally when you buy a product there is a description of the product before you purchase it... its just because someone randomly decided to send this to you without an explanation or note...
UNITRA Audio Amps were the "best" you could get in Eastern Europe in the early 80's / 90's. Basically almost all the clubs in that era were running their PA with this amps and speakers (A popular mod was to replace the original power transistors with Motorola one's) About the speaker connectors, I don't know how it's named, but it was a popular speaker connector type here in the EU
You could tell Dave was not pleased when he had to say, 'internet of things', but he has to be polite when people send him free stuff. I utterly empathise and sympathise with Dave here! Internet of shit; love it.
Oh man that internet of things part was funny. I think Dave would've got it working if he didn't get the page not found error though. He stuck through most of the process, as annoying and unnecessary as some steps were (like selecting an icon, having to go to github for code that you could've just listed on the page and so on). I think that's the reason he dismissed the MTester so quickly - he was annoyed from the hassle of the IoT item. I'm glad he took the time to look at the comments and make a new video for it - definitely worth checking that out, especially if you have no way of measuring ESR right now. The cheapest ESR meter on E-Bay was like $22, and of course lacks the other functionality of the MTester. It might not be as accurate and precise, but still a good deal, and if you need that accuracy and precision, you could use a scope.
10:58 Those are DIN Spreaker connectors! They were pretty usual in Germany and Europe until the mid 80's I'd say en.wikipedia.org/wiki/DIN_connector#Loudspeaker_connector Still have some of these working on an old crappy but working stereo in the kitchen
11:00 That's a DIN speaker connector, very common in European audio equipment from the 1970s and 80s - Bang & Olufsen even used them into the 1990s. And that kind of transformer isn't uncommon in European equipment either - I have a Philips 22AH305 amplifier from 1980 which uses a very similar looking one, with what looks to be completely uninsulated windings!
You SHOULD do a review for the MTester. Use a NEW 9V battery and it will be fine. There are a lot of people like me, wich haven´t an a LCR meter and the money to buy one, and this type of testers are so perfect for many applications. Many of us would like to see a complete review of this device and comparisons with commercial products.
Checking caps is probably the best thing about these little testers, (IMO) not a lot of cheap gear can test capacitance much less give you fairly accurate readings, I have an inexpensive DMM that can do it but it's not that great at it and the range is much wider on the tester.
Dave, that high density PCB layout from the Plexus compute module with the passives at 15:05 would sure look great as a wallpaper. Would you be willing to snap a HD picture for us?
You really have lead a sheltered life. The ohm metre and tuner are priceless examples of how things used to be. The speaker connections were common in the 60's and 70's. Hang in there Dave.
Hi Dave! @ 10:58 That's a polarized, unshielded DIN connector (I believe DIN 41529) for exernal speakers (my Videoton RA 6386s has them as well). Magnetofon is polish for Reel-to-Reel tape machine. :)
I had a quad-ra-phonic amp back in the mid 80's with those connectors. Remember when the BBC did some quadraphonic TV and radio broadcasts and I needed to lug the thing with its 4 speakers downstairs to plug it in to the telly. Great to have mailbag back and good that you are firing on all cylinders again Dave.
If this video had gone on for another one or two items, I get the impression that Dave would have imploded in a fit of outrage, indignation and disgust. I guess he hasn't read the extensive thread in his own forum about how good these little component testers are then...
Wow, just imagine how embarrassing it is to send something in and get this response hahah bet they never do it again must be demoralizing to have something shit-bagged like that ......
I just think its poor form for someone with a following to be disrespectful......he would be better off not having a mail segment, it just makes him look like a complete Galah........he is liked because he has a Steve Irwin character about him....maybe even a bit of Crocodile Dundee.......I doubt to many follow EEvlog for its technical prowess......its light hearted and fun, and these blowups don't do it any favours really.
Dave, you're dead wrong - these cheap little LCR / transistor / whatnot testers are very handy tools. It's a case of RT(nonexisting)FM. You can adjust the contrast on these things by just pressing and holding the only button. Then push it repeatedly until the contrast seems right.
"I get a lot of messages from india" I have no idea what it is, but being at least slightly well know on the internet seems to draw a huge amount of private messages from people from India, many requesting "mentorship" etc. In my experience they usually refuse to accept anything along the lines of "no, go away". Perhaps "mentorship" and social hierachy play a different role in their culture? I'd love to hear an explanation from someone familiar with the situation.
Being an instrumentation technician, and loving all things controls, I would love to support the Controllino, but at €115 for the mini, with no LAN or rs485, and having to start from absolute zero with code I will have to give it a miss. It's a great product for makers and seriously custom jobs, but it will never make it in the industrial arena with prices and limitations like that. Give it some time, and hopefully it can generate a community around it. I'll keep a watchful eye on it. I hope it gets more support.
Umm, the WizNet chip is LAN isn't it? RS-485 just needs some driver chips but I agree, it's an oversight that kinda limits it in an industrial scenario
10:44 That type of speaker connector was extremely common in the 80s / early 90s in the UK, so I guess it was a European thing? I think they might even date back to the 60s? They were actually a DIN standard connector, and the DIN code is 41529, according to the wiki page. They then realised they could save on the cost of the plugs, so a lot of amps then had those awful "spring clip" style terminals. lol (some gear still does.)
Yes the last thing component tester is brilliant ive soldered leads to the 1 2 and 3 solder pads with croc clips on the end makes it much easier to test things quickly mine was supplied in a case (not brilliant) but keeps it safer excellent on ESR electrolytic capacitors testing very accurate for the cost Dave check it out againg to test resistor -chokes- and capacitor values against a top of the range test gear also you may need to remove protective cover (plastice ) film off the LCD display regards Neil
You should have shown how to correct the soldering failure of those QFN packages. You can easily re-solder them by using a hot air rework station and small tweezers to remove the package. You can then wick all of the pads, re-tin them, clean the chip leads if necessary, place the chip in the proper orientation, and used the hot air rework to attach the chip. Covering the entire operation in a paste flux will prevent bad joints, and you'll find that the solder joints surface tension will pull the chip perfectly straight once the solder melts. This is really common to do in board repairs / reworks.
UNITRA was the Polish brand that made hi-fi tuners, amplituners, amplifiers and cassette decks. My dad used to have UNITRA hi-fi system split in four parts: deck, amplituner, equalizer (yes, 5-band stereo equalizer, left and right channel set independently), and... a digital clock. There was an option to set on and off time for the amplituner. About those speaker connectors: those are DIN speaker connectors, a German standard actually. Greetings from Poland :) Fun fact: IKEA use those plugs in their modern LED lamps.
RE: Speaker connectors on the Polish amplifier. They were a very standard Speaker connector in the EU during the 80's. Almost every Amp / Stereo had them.
Hi, I would like to say that I sprzen from the minute: 9:35 is from the Polish channel De-komozytor and he fixed it with strange things, I greet and wish you good luck
I used to make those ferrite cores at 16 minutes. Way back in late 80s as a youngster I refused to wear ear protection when honing the center parts. Bit of hearing loss on left ear now. I used to pair the items in a Wan Ker machine. We had many a laugh about the name of company. We worked at neosid in Letchworth garden city Hertfordshire England.
32:28 What're the odds the big Atmega is supplied from the main 12/14v input? No power => no firmware upload. The little one connected to the USB obviously gets power from the USB...
Hey Dave Jones. the connector you are referring to is 2 pin DIN connector. specifically originally used for speakers. Yes the same din tipe standards as the connector round ones. except a different variety. And they are still used in other for uther now. Such as Christmas LED lights. Some halogen lights and others. Also have you ever seen the duh 5 or 3 pin DIN connector used on European audio equipment. It was used instead of rca connectors in Europe a lot of times. It would carry for audio signals equivalent to 4 RCA connectors For 5 pin variety of connector. Left Right In. Left Right Out. That same Din 5 Pin cable would be used for all cables. Also pin usage would depend on what's being connected to what. Such as the receiver to the tape deck. 5 Pin was used for stereo. 3 pin was used for mono. The cables that is. Also with the circular din connections. those connectors would accept other connectors with lesser amounts of pins. There was some are compatibility but in some cases with Wilkes limited compatibility. I am putting a Wikipedia link below. It describes that speaker connector as well. en.wikipedia.org/wiki/DIN_connector?wprov=sfla1
These DIN speaker connectors were VERY common back in the day. So yes, have seen a ton. Prone to brake or noise a lot (first thing you change with a repair)
Ciprian Ciprian I think Australia should impose some tax on Dave for disposal of all the worlds shit he receives from all over the world. He is polluting the whole country, singlehandedly, and putting undue pressure on mail delivery people.
well the last device actually told you what was wrong. 7 volts for a 9 v is a bit low dont you think? use by many display not working because of the bad battery. didnt understand the rant here at all.
Just a thought, and I could very well be wrong, but you seem to be uploading Controllino code to COM3, and all my Arduino devices usually map to higher COM ports. Did you select the right port in Arduino IDE? :)
Hi Dave. Love your videos! I bought one of those LCR meters 2 years ago. I absolutely love having that on my workbench. It's the first thing I grab when I want to do a quick test of my parts. I just can't believe they managed to pack that many instruments in one meter! I paid $20 for it back then on Ebay. I'm sure there are fakes out there by now, but I think you could do a whole video on this meter by itself. Thanks again.
Pioneer receivers of the late 60s & early 70s used removable speaker connectors, with screw terminals for the speaker wire on one end, and flat, keyed prongs which inserted into the receiver on the other side. I'm betting that weird Polish amp had something similar, and they've since been lost.
Android needs location permission (it is coarse location not gps) to start Bluetooth device discovery. Probably google decided that you could localize phone with BT devices :)
Developer should have included explanation message to be more clear for what it is used. In essence it could be used to determine location so permission shouldn't change it's name, but developer should always include description why that permission is used (if it is not obvious as in this example)
The speaker plugs are called "DIN speaker plugs/sockets" here. And magnetofon is a reel tape player. The transformers/chokes with the intresting way to smd solder are rather common in telcom equipment, it must be a space/form factor thing.
The component tester is a great item, with many variants on the basic thing, with a huge following and brilliant open source firmware development. Probably one of the longest threads in EEVBlogs forums: www.eevblog.com/forum/testgear/$20-lcr-esr-transistor-checker-project/3950/ edit: Dave, you should have a word with your forum Super Contributor, madires. Then go and make a whole episode all about the famous "transistor tester".
If the telecom boards are from a similar system I once designed cards for, the BIG boards are in the FRONT of the chassis, the SMALLER boards, in the BACK. Probably plugging into a backplane with common pins between front & back cards. I/O typically in the back, though mine had front I/O too.
The component tester has the numbers 1,2,3 on the zif socket, and you only had to put one lead on each, or one lead on two for a diode of resistor. Then push the blue button and it should test it and give a reading of what you are testing.
We've had these old speaker connectors as well over here in Germany, so I guess it was a European standard or so. The plugs had one flat and one round contact, so you couldn't unintentionally mess up the polarity of the speaker. But they were very old, like from the 70s or so, at least in the 80s they were exchanged for the standard wire clips.
Ive seen those speaker connectors on Pioneer and Realistic gear from the early 70's. Pioneer SX-424 for example. i forget the exact name but Mouser has a pin header that fits that socket perfectly. even had the one pin wider than the other
Unitra is a big part of Polish history
Kto od dekompozytora?
Ja xd
MultiMisiek ja też
płakałem jak oglądałem i śmiał się z tego kabla xD że był krótki to dekompozytor go przedłużył xD
,,młagnełtłofion,, XDD
Może lepiej żeby EEVblog nie wiedział, co za mod był na tym przewodzie ;)
In fact, the Polish multimeter had a fully silver-plated PCB. It seems like Dave never saw anything like it before.
Don't blame the construction of that receiver as it's almost best you can get in early 80's in communist country where getting any parts (especially semiconductors) other than local made ones was almost mission impossible. Also any electronics was expensive as f!@# so it was probably repaired many times. BTW that speaker connector it is a 2 pin DIN, it's actually German standard used in 70's and 80's audio amplifiers across whole Europe.
that IS the standard DIN speaker connector for just about everything from the 60's in to the 80's you can still by them.
www.clasohlson.com/no/DIN-kontakt/22-1644
Yep. Featured in many 1960s-70s projects you find at hamfests etc. Jaycar sell them. www.jaycar.com.au/2-pin-din-panel-socket/p/PS0340
Some IKEA 12V lamps use them as power connectors too.
You put a crappy battery in that component tester and expect LCD to be bright...Also contrast can be adjusted.
@EEVblog
Haven't seen those Speaker Connectors in decades.
That's the old, european way to connect Speakers to the Amp. Pretty normal in Amps from the 70s, maybe even early 80s...
Oh and 'Magnetofon' is probably the good old turntable/phonograph or however you want to call it.
Also, that amp has a lot of tuning bands. LW + SW in addition to the normal ones we think of.
yep, we had those on our 1970's home system in New Zealand
Yep every good audio amp till the 80s had these speaker connectors in Europe.
Magnetofon - tape (reel-to-reel or cassette) player/recorder, so I guess, it's line-out connector.
The 4 or 5 pin DIN connector will possibly be stereo audio in and out.
22:45 the rack that those boards mounted into has 2 back-planes back to back, and the one that faces rear takes the smaller boards. The front takes the larger boards. I am not extremely educated on those systems, all I have done with them is dismantle them for recycling.
ah you figured that out.
That is no ordinary c1980s tuner. As well as AM and FM it features longwave (Europeans used it for broadcasting - we use it for airport beacons) and a couple of shortwave bands (covers most of what you need but it appears not to go down to 5045 kHz which Ozy Radio just out of Sydney uses).
Nice to read, Peter, that you are familiar with polish vintage home radio equipment. Receiver covered 40, 30, 17 and 15m bands (AM).
"not design for proper volume production" - lol maybe no but still it was in every house back in those days and i tell you they made thousand's of them
well at least the people had a lot to do to get paid for, maybe communism is actually about it :)
Dave, that M Tester is a component Tester that I think is very interesting device considering it's benefits to it's price ratio.
Unfortunately the one you tested had a faulty display, but I am sure you will like it had it worked.
I have couple of them and I use them often to test passive and active components.
There are many video reviewers talking about them on TH-cam, have a look at them and you'll know what I mean.
Thanks for your great effort.
It was not a faulty display, it was a crappy battery. If you look closely, it showed 7V which is pretty low for a 9V battery.
let him try using a 9 volt battery instead of 7
I got a similar type with a better display. It is a very good tool to see if caps are bad. I have a atlas peak and that only tell me the capacity. For 10 dollars it's fine.
You can just hold the button until it is prompt to adjust contrast
You can set the contrast. Just press and hold the button to go into contrast mode. Then press the button repeatedly to adjust it. Simple.
@EEVblog Those terminals are DIN-2 or Philips connector style speaker terminals.
Honestly, how often does Dave opens a mailbag item *before* the date written on the envelope...
If he did then people would come to expect it..
The worst thing you can do is raise people's expectations.
Dave isn't a PR agency. He gets around to opening stuff whenever he feels like it. Anyone sending him stuff with the expectation that he'll open it in time to give them free PR is being presumptuous and disrespectful. That wasn't exactly the case this time but I'm not sure why there was any sort of urgency implied in this case when he doesn't even live anywhere where that eclipse was visible.
I'd say that the easiest way to NOT to get your item opened before a specific date is to write it on the envelope.
Sarah Watt
I've shared a private pist with Dave abiut my fitst electromechabucal inverter showing videos and schematics. Will he be late in reading it?
21:44 I got some of those SynQor DC/DC Converters on the right, but encapsulated for medical stuff (120W). They cost about AUD $300 each!
+Chip Guy Vids doesn't suprise me!
All the big chips on that compute module are commodity chips; the MV64460 is a support chip for the two PowerPC processors (which happen to be radiation hardened!).
The big Tundra chip at 17:17, a Tsi107C-100JE, is a PowerPC bus interface chip.
The large chips marked ATLANTA are part of a chipset designed by Lucent/Agere and manufactured by LSI which provides an ATM switch fabric; these chips in particular are packet buffers.
The memory module on the voice processor board is most likely for the Atmel radiation-hardened PowerPC chip just below it.
Dave must be very highly charged to trigger those Controllino inputs!
EN 61131-2:2007 ("Programmable Controller" standard) shows that for a state '1' digital input the pin should be driven greater than 15V and be sinking at least 2mA (type I, or 11V & 6mA for type II, 11V & 2mA for type III)....
Given the noisy environment industrial products are expect to operate under, fast transient burst immunity conformance is an important step in avoiding intermittent and 'unexplained' problems.
Nah, got to disagree here, those little LCD transistor/LCR testers are awesome gadgets and impressively accurate for the price, as others have commented you really need to put a fresh battery on it and give it a chance.
Not as good as a full on curve tracer but *really* handy little quick test gadget.
Heavily documented on the EEVBlog forum too under $20 ESR tester I think?
The reason it asked you to turn off your mobile data was that Android 7.0 and 7.1.1 will not connect to a allow traffic through a wifi connection, when mobile data is present, that has no access to the internet.
If you don't recognize the loudspeaker connector.
en.wikipedia.org/wiki/DIN_connector#Loudspeaker_connector
About the "M-Tester":
I had one of these and it's not that terrible. Once you put a good battery in (7,4V is still not good ;)), the LCD is fine in it works quite well.
Who would use these? Someone, who is not willing to pay some hundert bucks just to get an ESR reading. I know this thing might not be accurate and not well designed but it WORKS - and to get an LCR/ESR-Meter for 6 bucks - I don't care about the rest.
DIN loudspeaker connectors, very common in the UK and Europe from the 70's through to the 90's. I always have a few suitable plugs for those in stock, as I often have to connect such stuff up. The original plugs had a Bakelite or similar high temperature plastic moulding for the pins, so it didn't melt when soldering. The type available now are normal plastic, so you have to be very quick soldering them, or the pins melt the plastic and alignment goes to hell!
Yep, i can remember a 70's stereo of my sister using those
The LMP plastic has been a problem for some time, not just on these connectors but also other DIN 41524 connectors including mini-DIN. Trick is to put them in a socket when soldering to them.
You have to read full doc for transistortester (the last one in video) ! www.mikrocontroller.net/attachment/143813/TTester_096k.pdf
This thing is very, very useful for recognizing unknown parts, especially surface mount ones with cryptic markings.
It's 2017 and webpages for hardware devices still suck.
10:28 these connectors are "DIN" , "DIN-2" or "2 pin DIN" speaker connectors - popular in 80's in eastern Europe - still available at ebay :)
That last Transistor tester / LCR meter is great. I have one. DAVE, your battery is FLAT, that's the reason it doesn't show properly on the LCD. It is very useful to quickly identify components and see the basic characteristics...
I have one of those little MTester units, it's quite handy for testing capacitors, not sure whats wrong with the screen on yours though
Julian Dymer he didnt adjust the contrast.
9V battery was low. It was 7V on screen.
"Replace the battery" May mean replace the battery.
*peplace
for LCR meter you just need to adjust the contrast by pressing "test" button multiple times!
Press and hold - then press multiple times.
Those speaker connectors were common years ago in the UK, I have had a few bits of equipment that had those whilst I lived there.
Same here in the Netherlands. My parents had a Schneider all-in-one system with speaker connectors like that.
You connected the Controllino connection board wrong. You moved the top board a little bit on side when you were connecting it so you missed the half of connections ;) Try to reasemble it again.
+EEVblog - ping Controllino fix ^ well spotted
+m3peran damn, really?
Yes, you can see it also on the video here: th-cam.com/video/WyV06NfWzoQ/w-d-xo.html (this black connector line is not connected to the device)
Dave is too stuck up with all his $1k + test gear...
The last thing you opened is actually a very handy tester for resistors, leds, transistors, capacitors, inductors etc.. it will tell you what type of transistor it is, and what leads are base, emitter and collector as well as many other things, and it surprisingly accurate. Anyway, for a hobbyist on a budget it is worth getting...
Gonna have to agree on this one
"Why do these exist" because not everybody has access to a lab full of multi-thousand-dollar test equipment?
They work perfectly fine for hobbyists and students, assuming you don't get one with a crapped out screen
Agree with that. I also have exactly the same type of transistortester from an Ebay. Got it in a case, and modded it to power it up from 18650 Li-Ion element. Also, reflashed a firmware for it. Very handy gadget to sort out bad caps, trannies, or even find out 'WTF is that unmarked little two pin thing'.
Dave is too bold with all his lab testing gear.
By ""Why do these things exist" I was referring to generic unlabeled test boards like this. If the damn thing had a descriptive silkscreen label and such on it I wouldn't have said that.
Yeah Dave, this series of product happens to be one of the most discussed topics on the forum of all time, partly because there are way more versions, clones, and derivatives than you can wrap your head around! This particular one you got is probably bottom of the barrel compared to the current state of the art.
www.eevblog.com/forum/testgear/$20-lcr-esr-transistor-checker-project/
Generally when you buy a product there is a description of the product before you purchase it... its just because someone randomly decided to send this to you without an explanation or note...
UNITRA Audio Amps were the "best" you could get in Eastern Europe in the early 80's / 90's. Basically almost all the clubs in that era were running their PA with this amps and speakers
(A popular mod was to replace the original power transistors with Motorola one's)
About the speaker connectors, I don't know how it's named, but it was a popular speaker connector type here in the EU
This is a "WG-2" Type "DIN" Speaker connector.
I find these little "LCR"-Meters pretty handy and mine got a working LCD too. I use them for low/high ESR check when repairing stuff....
Never laughed so much from one of Dave's videos with the Bolt IoT device hahaha. Crazy world we're in these days that's for sure!
Soo good, I had to pause the video to comment.. Soo funny!
I was dying at this part. Lol
"Internet of Shit!" made me laugh. twitter.com/internetofshit - today I learned that Juicero scam is shutting down!
You could tell Dave was not pleased when he had to say, 'internet of things', but he has to be polite when people send him free stuff. I utterly empathise and sympathise with Dave here! Internet of shit; love it.
Oh man that internet of things part was funny. I think Dave would've got it working if he didn't get the page not found error though. He stuck through most of the process, as annoying and unnecessary as some steps were (like selecting an icon, having to go to github for code that you could've just listed on the page and so on).
I think that's the reason he dismissed the MTester so quickly - he was annoyed from the hassle of the IoT item. I'm glad he took the time to look at the comments and make a new video for it - definitely worth checking that out, especially if you have no way of measuring ESR right now. The cheapest ESR meter on E-Bay was like $22, and of course lacks the other functionality of the MTester. It might not be as accurate and precise, but still a good deal, and if you need that accuracy and precision, you could use a scope.
+John Snow yeah, I was frustrated and in a hurry from the iot failure.
10:58 Those are DIN Spreaker connectors! They were pretty usual in Germany and Europe until the mid 80's I'd say
en.wikipedia.org/wiki/DIN_connector#Loudspeaker_connector
Still have some of these working on an old crappy but working stereo in the kitchen
that voip server belongs in a museum. Pretty crazy
11:00 That's a DIN speaker connector, very common in European audio equipment from the 1970s and 80s - Bang & Olufsen even used them into the 1990s. And that kind of transformer isn't uncommon in European equipment either - I have a Philips 22AH305 amplifier from 1980 which uses a very similar looking one, with what looks to be completely uninsulated windings!
You SHOULD do a review for the MTester. Use a NEW 9V battery and it will be fine. There are a lot of people like me, wich haven´t an a LCR meter and the money to buy one, and this type of testers are so perfect for many applications.
Many of us would like to see a complete review of this device and comparisons with commercial products.
They also has an ESR meter on it to chech faulty caps...
Checking caps is probably the best thing about these little testers, (IMO) not a lot of cheap gear can test capacitance much less give you fairly accurate readings, I have an inexpensive DMM that can do it but it's not that great at it and the range is much wider on the tester.
Dave, that high density PCB layout from the Plexus compute module with the passives at 15:05 would sure look great as a wallpaper. Would you be willing to snap a HD picture for us?
You really have lead a sheltered life. The ohm metre and tuner are priceless examples of how things used to be. The speaker connections were common in the 60's and 70's. Hang in there Dave.
Hi Dave! @ 10:58 That's a polarized, unshielded DIN connector (I believe DIN 41529) for exernal speakers (my Videoton RA 6386s has them as well). Magnetofon is polish for Reel-to-Reel tape machine. :)
Wow, those two prong speaker sockets bring back memories, had a few european designed HiFi units through the years that came with those sockets.
I had a quad-ra-phonic amp back in the mid 80's with those connectors. Remember when the BBC did some quadraphonic TV and radio broadcasts and I needed to lug the thing with its 4 speakers downstairs to plug it in to the telly.
Great to have mailbag back and good that you are firing on all cylinders again Dave.
The year is 2017. Microcontrollers run web servers serving Javascript over WiFi and require apps, location and API keys to program.
Seems like a start of a horror story, doesn't it?
Those speaker connections are a 2pin DIN variety. Used heavily in europe through the 70s and 80s.
If this video had gone on for another one or two items, I get the impression that Dave would have imploded in a fit of outrage, indignation and disgust. I guess he hasn't read the extensive thread in his own forum about how good these little component testers are then...
Hi Dave, does the Conrollino need to have 12v or 24V external power applied while loading code?
11:00 it is called DIN speakers connectors (I think it stands for deutche industry norm) bang and olufsen, philips has been using them.
Wow, just imagine how embarrassing it is to send something in and get this response hahah bet they never do it again must be demoralizing to have something shit-bagged like that ......
Then you should not send in an utter shit product
Yeah shouldn't send in anything at all, to be safe.....to any TH-camr
I just think its poor form for someone with a following to be disrespectful......he would be better off not having a mail segment, it just makes him look like a complete Galah........he is liked
because he has a Steve Irwin character about him....maybe even a bit of Crocodile Dundee.......I doubt to many follow EEvlog for its technical prowess......its light hearted and fun, and these blowups don't do it any favours really.
Dave, you're dead wrong - these cheap little LCR / transistor / whatnot testers are very handy tools. It's a case of RT(nonexisting)FM.
You can adjust the contrast on these things by just pressing and holding the only button. Then push it repeatedly until the contrast seems right.
"I get a lot of messages from india"
I have no idea what it is, but being at least slightly well know on the internet seems to draw a huge amount of private messages from people from India, many requesting "mentorship" etc. In my experience they usually refuse to accept anything along the lines of "no, go away". Perhaps "mentorship" and social hierachy play a different role in their culture? I'd love to hear an explanation from someone familiar with the situation.
Being an instrumentation technician, and loving all things controls, I would love to support the Controllino, but at €115 for the mini, with no LAN or rs485, and having to start from absolute zero with code I will have to give it a miss. It's a great product for makers and seriously custom jobs, but it will never make it in the industrial arena with prices and limitations like that.
Give it some time, and hopefully it can generate a community around it. I'll keep a watchful eye on it. I hope it gets more support.
Umm, the WizNet chip is LAN isn't it? RS-485 just needs some driver chips but I agree, it's an oversight that kinda limits it in an industrial scenario
Clint Jay Sorry, should have made it clearer. I meant the mini version doesn't have LAN.
Could the larger BGA's be the size they are to fit the amount of pins within the required spacing requirements?
10:44
That type of speaker connector was extremely common in the 80s / early 90s in the UK, so I guess it was a European thing?
I think they might even date back to the 60s?
They were actually a DIN standard connector, and the DIN code is 41529, according to the wiki page.
They then realised they could save on the cost of the plugs, so a lot of amps then had those awful "spring clip" style terminals. lol
(some gear still does.)
Yes the last thing component tester is brilliant ive soldered leads to the 1 2 and 3 solder pads with croc clips on the end makes it much easier to test things quickly mine was supplied in a case (not brilliant) but keeps it safer excellent on ESR electrolytic capacitors testing very accurate for the cost Dave check it out againg to test resistor -chokes- and capacitor values against a top of the range test gear also you may need to remove protective cover (plastice ) film off the LCD display regards Neil
The speaker connectors on that receiver were also used on the gramophone my parents had, probably mid to late 1960's vintage in The Netherlands.
the connectors on the back of the amp are DIN 41529 loudspeaker connectors.
You should have shown how to correct the soldering failure of those QFN packages. You can easily re-solder them by using a hot air rework station and small tweezers to remove the package. You can then wick all of the pads, re-tin them, clean the chip leads if necessary, place the chip in the proper orientation, and used the hot air rework to attach the chip. Covering the entire operation in a paste flux will prevent bad joints, and you'll find that the solder joints surface tension will pull the chip perfectly straight once the solder melts. This is really common to do in board repairs / reworks.
11:00 I've seen these type of connectors on east german stereos and loudspeakers too.
UNITRA was the Polish brand that made hi-fi tuners, amplituners, amplifiers and cassette decks. My dad used to have UNITRA hi-fi system split in four parts: deck, amplituner, equalizer (yes, 5-band stereo equalizer, left and right channel set independently), and... a digital clock. There was an option to set on and off time for the amplituner. About those speaker connectors: those are DIN speaker connectors, a German standard actually. Greetings from Poland :) Fun fact: IKEA use those plugs in their modern LED lamps.
RE: Speaker connectors on the Polish amplifier. They were a very standard Speaker connector in the EU during the 80's. Almost every Amp / Stereo had them.
His channel is De-Kompozytor from Poland like something
Hi, I would like to say that I sprzen from the minute: 9:35 is from the Polish channel De-komozytor and he fixed it with strange things, I greet and wish you good luck
I used to make those ferrite cores at 16 minutes. Way back in late 80s as a youngster I refused to wear ear protection when honing the center parts. Bit of hearing loss on left ear now. I used to pair the items in a Wan Ker machine. We had many a laugh about the name of company. We worked at neosid in Letchworth garden city Hertfordshire England.
You are WAY too entertaining when you are angry. That last bit about that IoT device had me rolling on the floor.
32:28 What're the odds the big Atmega is supplied from the main 12/14v input? No power => no firmware upload. The little one connected to the USB obviously gets power from the USB...
Hey Dave Jones.
the connector you are referring to is 2 pin DIN connector.
specifically originally used for speakers.
Yes the same din tipe standards as the connector round ones.
except a different variety.
And they are still used in other for uther now.
Such as Christmas LED lights.
Some halogen lights and others.
Also have you ever seen the duh 5 or 3 pin DIN connector used on European audio equipment.
It was used instead of rca connectors in Europe a lot of times.
It would carry for audio signals equivalent to 4 RCA connectors For 5 pin variety of connector.
Left Right In.
Left Right Out.
That same Din 5 Pin cable would be used for all cables.
Also pin usage would depend on what's being connected to what.
Such as the receiver to the tape deck.
5 Pin was used for stereo.
3 pin was used for mono.
The cables that is.
Also with the circular din connections.
those connectors would accept other connectors with lesser amounts of pins.
There was some are compatibility but in some cases with Wilkes limited compatibility.
I am putting a Wikipedia link below.
It describes that speaker connector as well.
en.wikipedia.org/wiki/DIN_connector?wprov=sfla1
That was some really bad acting with the component tester.
Why do you keep dead batteries around? Try the damn thing with a fresh battery...
These DIN speaker connectors were VERY common back in the day. So yes, have seen a ton. Prone to brake or noise a lot (first thing you change with a repair)
Does anyone know what Dave does with these devices received by mailbag?
Ciprian Ciprian I think Australia should impose some tax on Dave for disposal of all the worlds shit he receives from all over the world. He is polluting the whole country, singlehandedly, and putting undue pressure on mail delivery people.
well the last device actually told you what was wrong. 7 volts for a 9 v is a bit low dont you think? use by many display not working because of the bad battery. didnt understand the rant here at all.
11:03 My grandfather still has many different speakers with the plug. IKEA uses the ones for LED string lights and others.
Just a thought, and I could very well be wrong, but you seem to be uploading Controllino code to COM3, and all my Arduino devices usually map to higher COM ports. Did you select the right port in Arduino IDE? :)
+Vedran Latin is the only put available, and it takes to get the id
The loudspeaker connectors were standard and very common in Europe, the are called DIN 41529 connectors.
Hi Dave. Love your videos! I bought one of those LCR meters 2 years ago. I absolutely love having that on my workbench. It's the first thing I grab when I want to do a quick test of my parts. I just can't believe they managed to pack that many instruments in one meter! I paid $20 for it back then on Ebay. I'm sure there are fakes out there by now, but I think you could do a whole video on this meter by itself. Thanks again.
Pioneer receivers of the late 60s & early 70s used removable speaker connectors, with screw terminals for the speaker wire on one end, and flat, keyed prongs which inserted into the receiver on the other side. I'm betting that weird Polish amp had something similar, and they've since been lost.
The speaker connectors were fitted to car stereos in the uk around the 80-90s .
It would have been easier to flash the esp thing with the Arduino IDE
Android needs location permission (it is coarse location not gps) to start Bluetooth device discovery. Probably google decided that you could localize phone with BT devices :)
matucha123 because you can (it makes GPS more accurate by pinging other Bluetooth devices) Tho I agree it should be seperate...
Developer should have included explanation message to be more clear for what it is used. In essence it could be used to determine location so permission shouldn't change it's name, but developer should always include description why that permission is used (if it is not obvious as in this example)
I feel sorry for Ryan.
Magnetofon means tape recorder.
It's a DIN speaker connector - nowadays regularly used for LED lighting cables: en.wikipedia.org/wiki/DIN_connector#Loudspeaker_connector
With that amp/tuner, those speaker outputs were used in England.
The speaker plugs are called "DIN speaker plugs/sockets" here. And magnetofon is a reel tape player.
The transformers/chokes with the intresting way to smd solder are rather common in telcom equipment, it must be a space/form factor thing.
Yea, those speaker connectors were quite common (at least here in the netherlands) in the 70s. I think they were mainly used by Philips.
The component tester is a great item, with many variants on the basic thing, with a huge following and brilliant open source firmware development. Probably one of the longest threads in EEVBlogs forums: www.eevblog.com/forum/testgear/$20-lcr-esr-transistor-checker-project/3950/
edit: Dave, you should have a word with your forum Super Contributor, madires. Then go and make a whole episode all about the famous "transistor tester".
If the telecom boards are from a similar system I once designed cards for, the BIG boards are in the FRONT of the chassis, the SMALLER boards, in the BACK. Probably plugging into a backplane with common pins between front & back cards. I/O typically in the back, though mine had front I/O too.
The component tester has the numbers 1,2,3 on the zif socket, and you only had to put one lead on each, or one lead on two for a diode of resistor. Then push the blue button and it should test it and give a reading of what you are testing.
I want a video series of Dave trying to figure out howto use git. :D
The speaker connections were commonly used here in the UK up to the 80's
They are known as 2 pin din connectors
I was just wondering, I keep hearing the word ASIC (probably spelled wrong) in alot of videos. What does it mean?
application specific integrated circuit
We've had these old speaker connectors as well over here in Germany, so I guess it was a European standard or so. The plugs had one flat and one round contact, so you couldn't unintentionally mess up the polarity of the speaker. But they were very old, like from the 70s or so, at least in the 80s they were exchanged for the standard wire clips.
Ive seen those speaker connectors on Pioneer and Realistic gear from the early 70's. Pioneer SX-424 for example. i forget the exact name but Mouser has a pin header that fits that socket perfectly. even had the one pin wider than the other
44:09 "peplace the battery".. bwahaha
Speaker connectors were 2 pin DIN. Very common on many amps back in the day
A griddle is solid (like the bottom of a pan). A grill has openings (bars, mesh, etc)
I don't understand what it is about properly moving bits around a media gateway and network that requires such an _incredible amount_ of electronics.
+Winston Smith yeah, surprising
At last something from PL :)
"Backside for all you backside fanboys."
Dave, 2017