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Ahahahah you made my day

haha, greeting from Australia..

+Friedrich Ganter I am at the perfect middle between you too so I will have to decide who is on the other side. Incidentally my location (26°16'47.46"N 87°53'18.84"E) is perfectly at the center on the connecting lines of you two. Greetings from India.

+Friedrich Ganter The antipode of Sydney is a 1500km or so west of the Straights of Gibraltar.

Thankfully for Australia

Exactly

I think the same and more: the ones surprized by the precision of cheap multimeters are idiot enough to don't contrast them with their 'great' multimeter's precision and it's many times the same 0.5%. Funny when they take the expensive multimeter for precision and many times its the same lol

yeah but it's good enough to check a double a battery

I don't think he was deriding that multimeter or saying it is junk, yeah he was kind of negative on it but was impressed with it's accuracy and low price. But he didn't give out a flat recommendation not to buy it just pointed out that it's a bit dodgy for non hobby work

Here In india, I have seen in all the repairing shops in my hometown they use this multimeter for working with both dc and ac voltages(230 Volts)😥😥

+Graham Langley Found I've got the product flier. It's either the R50 (wide view) or the 70W40 (long range - 21.5m). Battery life is given as 15 years.

+Graham Langley The memory has dug up that someone had a patent on using a faceted mirror in PIRs to generate multiple detection zones - this was before HDPE Fresnel (that's 'fren-ell') lenses came along. It might be that the Rossin PVDF(?) sensor has multiple elements and so only needs a simple convex mirror.

. It's an Rossin corporation R-50 THERMAL INTRUDER SENSOR Still available as surplus stock : www.radwell.co.uk/Buy/ROSSIN%20CORPORATION/R50?redirect=true .

I noticed that too. Top work Dave!

+mikeselectricstuff Thanks for the info Mike.

+mikeselectricstuff One of the electronics mags around at the time did an article on the circuit design of this. Can't remember which one and my copy may have been recycled some time back. Edit: Just remembered a couple of things. The case was borrowed from something else and wasn't quite big enough internally to accommodate the flare of the tube, so the walls had to be milled out to make room. And the rechargeable cells they sold for it were AAs in a C-sized sleeve, which you only found out after you'd bought them.

+Osmosis Scary. I've got practically nothing from my childhood. Just a couple of photos.

+EEVblog Your son is adorable.

+Osmosis I'm 25 and I even I still find this a bit scary. The oldest footage I have of my childhood is all recorded on cassette tapes and faded images.

+Osmosis i dont know if weird or disturbing how easily everyone will be able to look up all your embarrasing moments digitally at typing speed, in our age you'd have to dig up some old VHS-C tapes(if someone was even filming in the first place) -pray they're labeled properly- and essentially watch the entire thing to find out something or clumsy FFWD, maybe a photo album. Now with a camera/video in everyones pocket ready to record in seconds, failarmy and yt every blunder with haunt you forever :D

+Osmosis And he'll be reading these very comments. How spooky.

Definitely! the way he speaks rivals many adults lmao

+mart fart He's going to go to school and tell all his friends about his 10Mhz reference oscillator!

Dave, I wouldn't bother with a pension plan. Sagan's going to be wealthy chap - who'll be able keep you in style during your old age ! ;-)

Speaking of Sagan I've not seen him in a more recent video in a while it may just be that I haven't happened run across one a little bit but just thought I'd mention it have not seen too many Eevee Blog videos recently so might be part of the reason for this. Also anyone know how old saying it is at this time? And yes I remember project Seguin of course and also the other kiddo of his as well course I thought that was hilarious when he did that that was the way to go I believe especially since the type of work he does what a way to introduce the new family member to the world. Also I once knew some way that work for a company that designed toys years ago and they did something similar when they had a new kiddo in the family it was basically a fake doll type of reveal I thought of that when I saw project Seguin although the doll thing was years and years ago but I still remember seeing it on the Super 8 film when they did the reveal to the family yeah it was that long pre VHS

+Stephen Tack Well, I did it with Fluke 333 on ohms range. Twice! The result: 2x burned 16A fuse (ceramic 220V/16A) + set of burned leads. The 333 is unharmed and happy. Me to.

zlotvorx fool me once...?

I've got that meter too. I'm still using cheap tools and salvaged parts. That was my first meter, and its actually my favorite.

+Alex Kantor And I paid like $10 for that meter!

+RadRider33 yup, still have one myself, good 10 year old design. But it works! and it's better to have a multimeter than not have one (and I don't really do in electronics to have requirement of better than like 5% precision)

+RadRider33 I have a Harbor Freight about a 1/2 mile down the road .... Whenever they go on sale for $2.99 I pick a couple up. Got one in my boat, my truck, my car, next to my main desktop, the garage workbench and a couple sitting on a shelf unopened. I don't even bother changing the battery because the cheap leads will be on their last leg and break before the 2nd battery goes dead. I just pitch it and grab another off the shelf The leads used to be a lot better, larger gauge and better insulation , no way would I trust the new ones to take 10 amps, the resistance of the leads would be 10 times or more than the shunt and the measurement worthless anyway Good enough for 12V boat and auto circuits, testing batteries and continuity checking although I think they should just ditch the transistor tester and add a continuity buzzer on it's place

+RadRider33 that design was my first multimeter too. got it like for 6 dollar local currency equivalent like 10 years ago. Mine died sadly (numbers jumping for no reason, no measurements on any range), lead broke somewhere inside. Still have it as my first dead measurement instrument.

+mikeselectricstuff Thermal Intruder Sensor? www.ebay.com/itm/Rossin-Corp-Thermal-Intruder-Sensor-6678-/131405385387 (don't mind me, commenting before finishing the video...)

+mikeselectricstuff Nope, it's a PIR.

+mikeselectricstuff i think is that or signal jammer

It looks like this: www.google.com.br/patents/US4468658

+Macpod HOW IS THAT A FEATURE? (caps lock, to lazy to re-type) like.... how could that be useful besides confusing your friends? here use this meter, its 100% accurate. if i let off the gas quickly in my truck it pops out of 3rd gear... thats a feature, it shifts for me!

+kain hall It's a subtle feature to let you know this meter is garbage, mate :)

It's a battery gauge, you connect it to precision voltage reference and depending on voltage shown by meter you know how much energy is left in the battery.

I have one of these. The useful thing is, even when the battery is completely dead it still measures 5.5 ounces.

When the battery dies, just go pick up another free one. :-)

+iTsTheVoLtAgE Sounds a bit English to me. Is his Mum an Aussie or a Pom? (Cute either way.)

+Gadget Addict less than a dollar in china :-) www.alibaba.com/product-detail/High-quality-professional-digital-multimeter-DT830B_921274538.html

+Gadget Addict CD-R-KING!!!!! hahahahahaha

I think I may have been like that as a kid judging by what I already knew by the age of five or even 4 for that matter some people say because at that time I was rewiring hundred twenty volt AC lamps yeah I was repairing lamps at 5 years old so yeah I think I got sick and Beat just Maybe Kinda sorta.

A bulb with two wire is often better for testing automotive circuits.

I have one of those just for continuity and reading voltages on where i don't have any idea of how much tension it is (and don't give a fck if i burn it haha)

@@TheCode-X The gadget is not what you should be concerned about. The worry is about the effects on your person of its explosive disintegration by massive overcurrent.

Speaking of a bulb with two wires I used to have that same setup for testing voltage when I first started out you're doing electrical projects it was one that was handed down to me from another family member. It was homemade but still in good shape even with the original test leads that probably had been re-soldered a few times originally one was red and one was black but one had to be replaced. From what I was told and I also had a second one that is made by the same person that had longer leads but had two bulb sockets so that it could be used anywhere from 120 volts up to 220 Ameri fact I remember hearing about in some way somehow possibly from different sources how's that the utility company when connecting up to a residence when running new wiring for overhead lines Wood Lamp out to connections at the service entrance from their wiring to the service entrance whenever first connecting using a setup very similar to that also I still have a continuity tester flashlight that was given to me years ago is still works although I did converted to an LED it still is a nice flashlight also somewhere I still have a few of the old from colored not necessarily chromed but I think one or two are metal C or D cell flashlight I think a couple r c and a couple Rd also have a few lanterns stowed away somewhere that would have used the racial big 6 and 4 volt batteries I'm thinking about converting them some way to recharge mobile maybe you're sealed lead acid and perhaps a built-in power bank? Although I do have one Lantern or two that had a quarter inch track originally on there one even had two of them perhaps one was added? So that you could use it with a headlamp in addition to your Lantern and yes the original coil cord is still in good shape believe it or not. And there was also an area like that could plug into the second Jack. There was a switch for both receptacles and also a switch on the lights themselves as well. Can't remember if that was a 6 or 12 volt Lantern but I think that one was 12 it's stashed away somewhere but not where I am right now. Also have a land foreign pride of similar except it's got a cord and 2 rounded is 1 would Connect into the front of the lantern in place of the Winds and reflector assembly and the other is essentially the head of the lantern that the bulb in reflector assembly goes into to turn it into a hand Lantern from a battery pack type Lantern again it was one that took the large alkaline or whatever it would have either been 6 or 12 volt battery you know when the big Lantern batteries they don't see much anymore. Also I do have some sealed beam 4.5 volt Lantern bulbs don't even know why I have them are where I got them possibly an old hardware store did they still sold those lights and may have closed down but don't know we're no longer sold the lights who knows just one of those random things I got over there years at places that could get stuff from cheaply where is somebody could have been used for something else and sometimes when something like that would come up I could arrange to get all of them Ford even further reduced price especially if I knew the business on her well in which law of cases I did that I was known for picking up stuff that there's only a few things left an inventory they're getting rid of Good Times those times I'd say.

@@stephenarling1667 yes I would agree I have one of those testers which is actually a modified Automotive work light modified in terms of a jack with test leads and another Jack with alligator clips for battery and our Jack with the cigarette lighter connector I Know Jack with female banana plugs And also a set of very long coiled test leads with male female banana connectors. Is that should be in everyone's test kit does extension lights same with alligator clip to Banana plug leads and just about any other type you could think of or come up with even if you make it for one specific test put it in your test kit for lighter you will thank yourself for this. Also speaking of a bulb and Automotive there's times that I did not have the proper materials or tools to do testing and what I would do would just pick up a pack of pull volt indicator lamps the ones that would be worrying that had the blue green or whatever colored plastic around them that was meant to snap into a hole in a panel and just attaching wires it works plus you had indicators for another project in the end one time I even round up using a switch with a 12-volt bulb in it because I could not get an indicator but I could guess which or it was just a viable I don't remember long time ago but I was in pain and it worked I was able to get whatever it was working it need to be to under right then and there. Also if I was working on something for somebody and did not have a proper meter or continuity tester available I would go somewhere and get a battery holder and an indicator of some sort with nibia 4 volt bulb and maybe a 4 C or D cell or double A or AAA holder and make a Jerry Reed continuity tester out of it and then of course save for parts for another project later I fixed a hair dryer doing that once all that was wrong was there was a broken piece of wire between two points in the device this was actually not the handheld dryer but a Hood Type dryer a very expensive one and the person used it all the time and wondered if I could try to fix it for them Ameri fact the wire need to be high temperature and that was salvaged from something else that I could not fix during about the same time can't remember what was it may have been either a heater or a toaster or perhaps a little mini countertop stove I had prepared several things for them previously was in about a month's time so can't remember but this was many many years ago probably in excess of 20 years but yet the mind is still sharp pretty much Seems Like Only Yesterday that I got my first electrical tester of any type. By the way was going through some stuff and found my first actual continuity tester that I had gotten from somewhere yeah sure the batteries were left in it corroded do you know where however once I get cleaned up it's going to live on although I already found a way to replace this the original spring which was corroded into two pieces which was the new spring was actually a salvage spring or something and two metal pieces I think that were a battery contacts for something recently folded over on either end of the spring and also they fit exactly without even stretching the spring or anyting so just pretty cool what you can do or salvage parts and also things that you jerry-rig even for one temporary use just to fix one thing.

+MacVision Could be Pepper Pig and Mr Maker!

+EEVblog Peppa Pig seems to be really popular nowadays.

+MacVision sounds exactly like all of my nephews, must be pepper pig

+MacVision Exactly what i was wondering about. As a non native english speaker i thought i maybe mistaken it, but obviously i´m not :D

+MacVision that will disappear when he starts school

Of course I couldn't figure out how to use it? Or just so odd? Please elaborate in a comment

Did you have a multimeter with you to check them out and then if they weren't working right fix them not lol for me when I was old enough I would be fixing problems the people didn't realize I had right then and there if I had the parts of a whole I kept electrical supplies with us in the car you'd be surprised when someone when asked could Aaron take a look at that lamp Outlet whatever I'm like sure where is the electrical panel so I can shut off the power if need be also the reason why I had a hundred twenty volt powered Boombox in the car and find out what circuit so it was on they did not have breaker fuse finders back then but there were times which I couldn't kill something I'm very tempted to crowbar the thing a k a dead short did that once and guess what well couldn't kill it but what are the neighbors knew I was working over there and came running over and they said how far lights are flashing I'm like what is going on and I noticed that it seems like there's a lot more energy than just it may be a single circuit turns out this was range wiring or similar it had completely bypassed the service entrance all together it was running to the meter box directly found out later bypassing the meter entirely along with us which we could not figure out that they noticed that sometimes you want to throw was extremely low and our times very high that switch was turning on and off the voltage coil do drug terminals on the back of the meter where there was a link that could be removed on those old meters so another words whoever originally had the place was stealing power obviously not the first time I've seen crazy things like this also unenroll metered water service that have been abandoned and reconnected and the horror a place that had never had Natural Gas officially but had gas appliances and was working but there was a meter that was hooked up to the gas lines lighter for these except not all of them we're actually metered but they have been using about turkey for the longest and didn't even realize there was gas present even without the meter up and to the point they smelled gas the gas company try to show it off but there was still gas on to certain appliances. Also I've seen places where there was natural gas service but the utility company said there was never gas service to the place and there was no record of any connections whatsoever. And also and there were times in which there was a house that have been built and there was never any gas but there was a gas line coming into the foundation that was connected at the other end and not being able to be shut off and the people thought they were crazy because they smelled natural gas but new Dr was never any girls was looking around and I spotted I can't turn off pipe in the foundation sure enough gas line leaking.

+James Brown I can't be the father, getting a paternity test immediately!

+EEVblog I don't know, he seems to love your work when you bring him! should be very proud!

By the way did you try Golf and give up username? Story behind it? Please call me at not a? But an explanation point

I was thinking either and hello or possibly a cable holder and then I realized oh wire spools

This is not a knife this is a knife

Yep

+Kevy Just some ugly guy who clearly isn't his father.

+EEVblog his opening had me rolling. Excellent job Sagan!

I agree. I know why he is bitching around. I don't care if it is 9,99 V or 9,998563727363738 V

I have one of these. It doesn't measure anything external, only the values of the internal components. It's useful in that respect.

Keep it away from high voltage, absolutely no protection in it. Otherwise it's great for checking batteries and ultra basic diagnostics.

As someone who barely knows what he's doing it's good to let me know if my better Radio Shack meter is working or if I'm doing something wrong. I bought it for the transistor tester which is not great and because at $3 how can you not.

By the way nice find on the patent on Google will read full thing eventually saved it to favorites. Just a quick skim over it pretty intriguing and interesting that's something quite a bit different than most motion detectors for sure and also the device that you're referring to in his video yes very different but the problem would be must have battery dies would it be able to indicate nurse an issue with the sensor? Maybe if do barristers to get low input sound of a certain parent of false detections the indicators a problem with the sensor or something of course a system designed like that would probably have a way of determining if the sensor had an issue or the battery was getting low but it may have been too early for that but if you're a lot of them I can see if there was no way to indicate if there was a brown with battery or sensor if you have a lot of those it could get confusing or say it was in an awkward to get at place just trying to figure out what was going on I could see that if it had had it replacement batteries in a battery holder both Glow Draw lithium would be better but still something like that being solar powered by a lithium battery in hard-wired into place but an advantage would be you would not need power after detector simplified wiring and hook up for the sensor but it's kind of Niche product I'd say just an odd one in general I doubt they still use things like this or somewhere like that would still be available is with all the advances and more modern systems? But may still be in service somewhere someone out doing something who knows. Also I I have seen very old motion detectors that were humongous in Old buildings and even Tone Ultra Sonic alarms are basically obsolete even the box that could be set on a shelf self-contained ultrasonic alarm probably from the 50s or 60s still working to this day. Have Salvage all types of equipment like that for parts and repurposing old alarm systems that were functionally obsolete for who knows how many decades you know the old green box up on the wall it'd be rectangular and probably have a battery in it likely number 9 drawer cell in some cases. So those were essentially a glorified exit alarm for a door some of them even had the hardware for that accept had a small relay module how do I know this I've seen the door alarm version from the same company and the alarm version from the same company most of the inside is identical. Sometimes I do work to liberate things for Salvage in others as part of the deal for something that need to be done and sometimes I got more than I bargained for like once almost a whole basement full of old equipment. Also I did actually couple times use old remote control systems that work for TVs that were ultrasonic and repurpose them for other projects. Although one of the more interesting remotes I've seen was not ultrasonic or infrared basically a glorified flashlight with a relay that would flash the bulb an each Button had a specific flash pattern and it was repeated I think twice maybe three times to avoid false triggering ingenious but it works and yes there was a push button to use the remote as a flashlight which I thought was just why not. The remote was a bit bigger than an older garage door remote I think it took 2 C batteries side by side at the bottom of it many years ago. Also I once saw a toy CD player music box crayon saying it similar to the one that Radio Shack made except it had a remote that basically work the same way which I found out that particular one deliver or not I was able to take the output of that separate circuit board and make it do my bidding can't remember how but I was able to decode it interesting it was two easy dinner face it may have been serial or parallel it seems like Pearl alderman except a few signals put out more than one pint of ones but it seems like the rest of the others would always only be active with one button there was also a word that was active for invalid signals inhibit? Although I built a CD jukebox system once I got a hold of this equipment that originally used what look like off-the-shelf mini mini disc CD changers except some different controls on a front additional things this weld are on the back more Jack's Imports than you can shake a stick at evidently if you could think of a way to control it it could do it out of the boss parallel port serial port an even individual + 5 to 12 volt triggers for each function seriously definitely some sort of product that was meant to be incorporated into something else I got a lot of these at one time don't remember why I want to fool with them but I did reuse them of course not going to take that part and scrap it when you could build your own jukebox essentially but you got it could be used Standalone and there was a separate remote for Standalone it did not operate any of the other functions or any of that as well not only that they could even be powered by other than line voltage AKA DC and the power supply even Han outputs for other voltages for external are an external connector so basically a prank it was designed to be around designed to be used with whatever application you wanted it to be used for that you might want to control CD playback but yeah mostly look like an summer gear which was strange you think that something like that would be in a rack-mount case but it wasn't but evidently that will available as well strange again. Also all the audio and everything was run out to multi pin connectors in addition to Indian kid actors and others and with the multiplan connectors they also went through audio switching as well which could be controlled by remote and or other inputs so evidently it could Multiplex or switch audio from one or more of those players to a common output so just one of the weirdest things I've seen along that line of those kind of things but just interesting nonetheless and useful even after the original application was done for I had also a lot of these are spare units as well so don't know where they were so came from where the story but car from someone else there was a hole in my trunks and fousey August he kept a few but the rest not so much also got several years to other people as well that could use them

Also as for the last part of your comment I bet you if it hasn't happened yet it will of course it usually does? Also remember to chinese-made phone charger I think it was where there was a ridiculous thing about they're hand-tuned or whatever spark gap and all that crap and no words a defective product that had been written up like that was intentional and also and it was chinese-made if I'm not mistaken and it did go by the name that's commonly referred to as Chinese junk from a certain Market can't think of the name of it at this time but it was hilarious and evidently that was actually from the factory and they sent it as a gag but still rather entertaining kind of reverse of what you'd expect but I think they wanted to have a laugh really who knows how long it took them to find one exactly like that so they could do that.

That would be amazing! +1

+James 86 I'd love to see EEVBlog builds, even if it's simple electronics.

+Prehistoric Man Me too, even in simple circuits we can see, and learn good habits that we can use for design electronics devices. :)

+James 86 dave doesn't build anything, he just tears things apart. oh wait, he did build that microcurrent thing... kind of simple though.

Dave used to develop and sell kits. Like the uWatch. But he wrote some time ago, that is a lot of afford and trouble. Even shipping bis uRulers was a mess and that was a plain PCB. I would love to see him continuing the uSupply, but I also understand we he is not.