+EEVblog I actually prefer Rhode's follow-up tome called 'Dark Sun'. That is an absolutely FANTASTIC book Dave - I have four different copies - and highly recommend it. Although something tells me you probably have already read it! One you might not have come across is 'The Plutonium Files' By Eileen Welsome and is also worth your time. The writer is clearly anti-nuclear and she is very alarmist in her editorializing. However, the actual historical facts and research are amazingly interesting. I have been nuke-obsessed since I was a kiddie in 1981, genuinely petrified and listening out each day for the four-minute warning to go up - and there were a few things in there which I had not heard about before. You mentioned before that you have been to England in your travels. If you ever head up here again you should take the time to go look at RAF Fylingdales on Fylingdales Moor. One of the major world-wide components of the early warning system is up there - an immense solid-state electronically scanned phased-array radar installation. If/when the balloon goes up we'll get the warning from there first - in Britain at least! Admittedly it was more visually arresting before the old 'Golfballs' were demolished, but its still worth the trip. You can even fit in a quick pass of Menwith Hill at the same time!
Hi Dave: Your interest in Atom made me remember my Cousins work a Los Alamo's N.M.. He invented a fast camera that would take pictures at the rate of over a million frames per second. His name is Willard E Buck. The camera was used to take pictures of the explosion. One camera was a bit to close so it melted. The other work. The basic design is a spinning three faced mirror. Driven by two tiny turbines made by a machinist who worked at the Bureau of Standards unit in Bolder Colorado. They were driven by compressed gas. They spun up so fast the it passed the sound barrier. The two turbines each produced seven and one half horse power. So the light comes in through one compound lens. The mirror is at the focal point. The light is moved around a large thin cylinder that held 35 mm film in place. The light moved with the film stationary. The camera that this one took the place of had some 300 lens according to Willard. This camera still exists. The owner has completely digitized the whole thing. He is noted for his pictures of lighting. There is an article about him in one of the National Geographic Magazines. Willard has many patients to his name. Look him up.
18:50 The moment I heard 'pal converter' I thought ooh ooh, I bet there will be a delay line in there! (learned from the camcorder teardown and subsequent review of the delay line).... Opened it up and bam...there it is! Dave...you taught me something months ago and it stuck!
EdFact: The sound sensor they mention in "modern cars" in the manual to Edison, is call a 'knock sensor'. Signal from the knock sensor is fed to the ECU to monitor ignition timing / firing of the spark plug.
39:39 The last patents on the LEGO dimensions elapsed in 1988, so any company can make products that have studs or holes that are compatible with the LEGO bricks. Many did though that didn't stop LEGO from continuing to sue manufacturers that just made bricks based on "trademark". (they were OK with companies having products LEGO wasn't making themselves but had LEGO connectivity). A final ruling in court in 2010 allowed even making regular bricks, citing that you cannot trademark a technical function (the brick interlocking). So since 2010 several companies have made bricks.
Yeah, Hasbro has their KRE-O brand that says on the package "Works With Major Brands". Those came out in 2011, which is pretty much in line with the ruling.
This Minnesotan winter has been pretty mild as of yet, avg of -16c by my memory. I have heard of registered tempurature differances across the state swinging as wide as 100f over the course of a day. Cold here in the north, hot down in the south (Rochester)
You get used HP z820 barebone workstations. The 2nd revision (make sure you get one of them) also supports the v2 Xeons. These are absolute workhorses. You should get an entire machine incl. ram for about $800.
I got three Edison robots. Each performed completely differently. One did just like yours in that it kept going in a circle. None handled the obstacle avoidance very well out of the box. I haven't had a chance to try programming them yet. I had to open up one of them because it wasn't making good electrical contact with one of the motors. They use just pressure to hold them in place. So good idea, but execution is a bit lacking.
Thanks for tearing down my ECU Dave, great point about the free-standing components. I forgot to mention that these are mounted inside the car, maybe that's how they get away without conformal coating and a tighter chassis.
About the lego thing, a lot of patent/legal stuff ran out a while ago, so you can now be "lego compatible" without much fear, not so a couple of years ago
When too many days pass with no EEVblog in my UA-cam feed I tend to get depressed. There should be a warning sign for newcomers about the withdrawal symptoms that will last a lifetime :)
EEVblog you didn't need to. I've done many a Subaru engine and trans swaps, with associated wiring, and as far as I know, these ECMs are mounted in the passenger footwell of the car, not in the engine compartment. You were right on though, they're built pretty well down to a price. I also work on BMWs and it's shocking how many corners Subaru cuts on their electronics and how massively advanced BMW seems to be in comparison.
Guys, I'm not trying to be a dick here but I see this way too often lately... Why are americans / native english speakers more often than not skipping the '°' (degrees symbol)? Units of measurement shouldn't be context sensitive. 100C means 100 Coulomb (electrical charge) and 100F means 100 Farad (electrical capacitance) but I'm pretty sure everyone on this channel knows that. I would really like to know why this is so common in informal english writing. Oh and while I'm on that matter: I just can't get over the fact that in formal (scientific) english 'V' stands for both voltage AND volume. In Germany for example we use 'U' for Voltage and 'V' for Volume, so there is no redundancy. (i.e. in english 'R=V/I' could be interpreted as 'resistance equals volume over current' which would be nonsense)
John Ridley I have to apologize. I had no idea that the QWERTY layout doesn't include the degrees symbol. From now on it won't bother me anymore if people just skip it and you are awesome for trying to compensate by using an asterisk! Now I just need an equally satisfying answer to the voltage vs. volume problem. Is the upper case 'U' already used for something else?
The mosfet rectifier was indeed designed to have heat sinks on them. If it is actually required, depends on the mosfets internal resistance and on the current drawn from the output. Fun fact: I showed the video to my dad and he said: Hey, that Casio calculator is almost the same as the one I threw out recently....
St0RM33 No, those are via's. It's where the copper on the bottom connect to each other. I put in quite some to ensure a decent current capability. The pcb should be able to do 15A or something like that.
I understood that they where vias but didn't pay attention to the design of the board. I though it was two layer specifically because of the circuitry. Thanks!
So, when are we going to see an "EEVblog DIY mini nuke project"? There is a large stump in my yard that needs to be removed and a small nuke ought to do the job :)
South Africa's Custom inspects every incoming package. Only ever had one package denied. You did not say, but going by Stefan's name, I would guess it was from South Africa.
i heard legos patent expired, and last year i saw 4 or so different brands of brick kits in target for sale. so might be quite easy to make things compatible these days.
Dave is right about coming through Australia's customs with any type of nuts. Back when I came on trip a few years ago I had a bag of trail mix in my carry on. They had dogs running up and down the line and when it got to me it went absolutely crazy I thought I was going to be arrested or something.
Hi Dave. I work with pumps and you do occasionally see Multitrode controllers. It uses multiple electrodes (multitrode) and different depths in the water and uses the waters conductivity to complete the circuit between the common electrode and the various depth sensors. They use these instead of float switches which aren't as reliable as the cable insulation breaks down eventually and the micro switch in them does fail occasionally.
My brother built a Mini-ITX system with a Xeon E3-1220 processor in it last year. His decision to go with a Xeon was the fact that Intel was doing away with virtualization extensions in the Core I7.
Vias that connect the top and bottom plane to slightly improve current capacity and thermal dissipation. They are plated through during the manufacturing process.
I used to work for a Panasonic authorized service center. Matshushita is the original name of Panasonic's parent company. They recently changed their name to Panasonic. Sort of like GM changing their name to "Chevrolet" or something. It's pronounced Maht-shush-ta. (rough, it's difficult to indicate the Japanese pronunciation.) Somehow the "shit" is silent. A former colleague's last name is "Yamashita." Funny, our company's E-mail filter "shit canned" my e-mails to him because of those 4 letters. It's pronounced, "Yam-ahsh-ta" Romanjii pronunciations are often strange, with many silent syllables. I miss working with the Japanese.
For those in Australia, don't you just hate when the road gets covered in like 15 inches of snow, and the trucks plowing the streets, angle the plow in a way where it ends up piling like 4 feet of snow in front of your driveway that you then need to shovel a path through before you can leave for work?
he did, look back to a few videos ago he bought that same graphics card and it made his video rendering actually slightly slower, it only helps for specific software and specific codecs.
If you ever get the chance Dave, you should visit the Titan II Missile Museum just south of Tucson Arizona. I think you'd find it quite fascinating.... The Top To Bottom tour is definitely the way to go!
BashMonkeyRC Yes, but even if gpu rendering helped, Dave uses Handbrake before uploading his videos to youtube so a better cpu is a better option for him.
"University program" :D Where's the poop, Mr. Wong? If you or any Digilent affiliates are reading this, can I order a Nexys3 from a local recognized reseller here in Europe and _still_ have my purchase be conform the university program policy? Resellers don't seem to offer that I've noticed. I could order it from the US, but shipping would just as easily take a big bite out of the reduced price :(
I know this is about 12 months late, but those 2630v2's will still kick the shit out of a 5960x for things like rendering due to the massive core count.
I know this is probably a noob question but... In pcb design, is there really a reason one should avoid 90 degree angles? I etch my own boards as a hobbyist and like the way square traces look. Am I missing something important? By the way, love your videos Dave!
As a circuit board heats up and cools down the board and metal expand and contract. A sharp inside corner corner is a spot a crack can and will easily start. For example the 1st jet liner crashed because it had square windows, crack started in sheet metal window corner causing fusakge skin to split open. So now all corners, especially inside corners are rounded smooth transitions. That's why you drill a round hole at the end of a crack in metal to stop it from cracking firthure.
When It wont play it I mean at 50 frames per second most laptops, Ipads refresh at 25 frames per second so the extra overhead in bandwidth and processing is completely wasted. Only very fast moving filming is worth 50 fps ie sports.
All the Subarus I've swapped have had the ECM mounted in the passenger footwell. Dave is right though, they're pretty cheaply made, but that applies to much of Subarus electronics. When I work on my BMWs I'm amazed how much more advanced they are than Subaru for the same time period. Subaru is literally 20+ years behind. Oh well.
Hi Dave, Love the videos - thanks. I'm a broadcast professional. I don't know any broadcasters outside of maybe Japan using 50p, it is overkill for your audience. I would say very few people can either see or appreciate the difference. iPads or laptops won't display it. Every extra hour you spend in post production lessens your profit. Cheers - Pete
I think the high framerate videos are beautiful! They feel more fluid. Anyone telling you there's no difference is using the wrong browser, or not downloading the videos at full resolution and framerate and viewing them in a proper media player on a big screen with zero chance of buffering (like me! :)
Dave, about the french name that you pronounced wrong: you should watch the movie ‘Shawshank redemption’. The main character has the same name (Dufresne).
Whatever motherboard you go with for that rendering rig go for a Supermicro brand board. They are the only company that makes good dual processor boards that are atx/eatx. The X9DRI is cheap (at least here in America) and probably overkill for what you need.
So send him some! :P He does like to tear down new test equipment, when he gets it, so there's that. Mailbag and teardowns are what WE all make of it! I personally love the retro gear. That said, I love seeing how the new stuff gets built too.
Suggestion for next Test/Teardown: "easyjumper(TM)" from Amazon. Recently discovered this on photonicinduction´s Channel and would like to see a detailed test. Especially concerning the safety of this gadget.
If you are a fan of Atom bomb development then if you have not seen "Trinity and Beyond" you simply must. Link to the trailer: ua-cam.com/video/oQMnC7AM7jc/v-deo.html
i got a FPGA kit my school was donating a few days ago - its the altium live design kit with a spartan-3 on it. I watched your video on FPGA's a while back and am still a bit intimidated by the programming but i will mess with it later. Maybe wire my wall up with monitors?
Hi Dave. you are correct about that automobile device. I used to work for automotive company and that kind of design is not acceptable. all bigger parts must but glued it is not possible to be like than freely standing. as you said vibration would damage it so no that is not good design also i didn't see any seal or conformal coating.
EEVblog you might enjoy www.amazon.co.uk/Command-Control-Eric-Schlosser/dp/1846141486 . It's terrifying how dodgy some of the bomb designs were, and how hard the forces pushed back on the engineers trying to make the bombs safer!
If you're interested in the automotive tech I could probably send you a couple immo/ecu modules from various models. I'm a locksmith so only really interested in the immobilisers but some have quite interesting designs like Mercedes Bosch ecus reclaiming injector opening current to open the next injector.
Well I'm currently working VHDL with a FPGA development board borrowed by the university because I can't afford one while you're getting it for free :(
I'm sure this ECU operates fine, however I must say the case it's housed in doesn't inspire words such as quality build. For the climate the sender described, I am guessing this must fit inside another water/air tight casing??? Surely.
I'm sure this is way too late, but the core i7-4770k & up will outperform this chip in all but the most heavily multi-threaded applications, even at their stock clock speeds. Fortunately, with their unlocked multipliers, they also have a great deal of overclocking headroom. I'm running a 4770k, which is normally clocked @ 3.5 GHz, at 4.4 GHz using a Noctua air cooler and a bunch of big, slow-spinning 120 mm case fans. I only had to bump vcore up to 1.25 volts to get the system rock-solid stable under 100% load.
@Lan Party Hosting "I am become Death, the destroyer of worlds."
+EEVblog I actually prefer Rhode's follow-up tome called 'Dark Sun'. That is an absolutely FANTASTIC book Dave - I have four different copies - and highly recommend it. Although something tells me you probably have already read it!
One you might not have come across is 'The Plutonium Files' By Eileen Welsome and is also worth your time. The writer is clearly anti-nuclear and she is very alarmist in her editorializing. However, the actual historical facts and research are amazingly interesting. I have been nuke-obsessed since I was a kiddie in 1981, genuinely petrified and listening out each day for the four-minute warning to go up - and there were a few things in there which I had not heard about before.
You mentioned before that you have been to England in your travels. If you ever head up here again you should take the time to go look at RAF Fylingdales on Fylingdales Moor. One of the major world-wide components of the early warning system is up there - an immense solid-state electronically scanned phased-array radar installation. If/when the balloon goes up we'll get the warning from there first - in Britain at least! Admittedly it was more visually arresting before the old 'Golfballs' were demolished, but its still worth the trip. You can even fit in a quick pass of Menwith Hill at the same time!
The temperature variation in Minnesota from record high to record low is 97 degrees celsius.
Hi Dave:
Your interest in Atom made me remember my Cousins work a Los Alamo's N.M.. He invented a fast camera that would take pictures at the rate of over a million frames per second. His name is Willard E Buck. The camera was used to take pictures of the explosion. One camera was a bit to close so it melted. The other work. The basic design is a spinning three faced mirror. Driven by two tiny turbines made by a machinist who worked at the Bureau of Standards unit in Bolder Colorado. They were driven by compressed gas. They spun up so fast the it passed the sound barrier. The two turbines each produced seven and one half horse power. So the light comes in through one compound lens. The mirror is at the focal point. The light is moved around a large thin cylinder that held 35 mm film in place. The light moved with the film stationary.
The camera that this one took the place of had some 300 lens according to Willard.
This camera still exists. The owner has completely digitized the whole thing. He is noted for his pictures of lighting. There is an article about him in one of the National Geographic Magazines.
Willard has many patients to his name. Look him up.
18:50 The moment I heard 'pal converter' I thought ooh ooh, I bet there will be a delay line in there! (learned from the camcorder teardown and subsequent review of the delay line)....
Opened it up and bam...there it is!
Dave...you taught me something months ago and it stuck!
EdFact: The sound sensor they mention in "modern cars" in the manual to Edison, is call a 'knock sensor'. Signal from the knock sensor is fed to the ECU to monitor ignition timing / firing of the spark plug.
39:39 The last patents on the LEGO dimensions elapsed in 1988, so any company can make products that have studs or holes that are compatible with the LEGO bricks. Many did though that didn't stop LEGO from continuing to sue manufacturers that just made bricks based on "trademark". (they were OK with companies having products LEGO wasn't making themselves but had LEGO connectivity).
A final ruling in court in 2010 allowed even making regular bricks, citing that you cannot trademark a technical function (the brick interlocking). So since 2010 several companies have made bricks.
Yeah, Hasbro has their KRE-O brand that says on the package "Works With Major Brands". Those came out in 2011, which is pretty much in line with the ruling.
This Minnesotan winter has been pretty mild as of yet, avg of -16c by my memory. I have heard of registered tempurature differances across the state swinging as wide as 100f over the course of a day. Cold here in the north, hot down in the south (Rochester)
You get used HP z820 barebone workstations. The 2nd revision (make sure you get one of them) also supports the v2 Xeons. These are absolute workhorses. You should get an entire machine incl. ram for about $800.
I got three Edison robots. Each performed completely differently. One did just like yours in that it kept going in a circle. None handled the obstacle avoidance very well out of the box. I haven't had a chance to try programming them yet.
I had to open up one of them because it wasn't making good electrical contact with one of the motors. They use just pressure to hold them in place.
So good idea, but execution is a bit lacking.
Pete Brown Ah, ok. Mine seemed ok. You'd think they'd all perform identically, it's two motors and micro after all!
You are one of the few youtubers to shoot high frame rate footage. What a lovely donation you got to keep doing it.
21:32 the white stuff on the ground is clearly sand desposited after a storm
Thanks for tearing down my ECU Dave, great point about the free-standing components.
I forgot to mention that these are mounted inside the car, maybe that's how they get away without conformal coating and a tighter chassis.
About the lego thing, a lot of patent/legal stuff ran out a while ago, so you can now be "lego compatible" without much fear, not so a couple of years ago
When too many days pass with no EEVblog in my UA-cam feed I tend to get depressed. There should be a warning sign for newcomers about the withdrawal symptoms that will last a lifetime :)
97c temperature swings, summer engine compartment near 90c, winter -20c
Stephen Woods Ah, right, I wasn't factoring in the engine compartment.
***** You got that right! Brrr!!!
EEVblog you didn't need to. I've done many a Subaru engine and trans swaps, with associated wiring, and as far as I know, these ECMs are mounted in the passenger footwell of the car, not in the engine compartment. You were right on though, they're built pretty well down to a price. I also work on BMWs and it's shocking how many corners Subaru cuts on their electronics and how massively advanced BMW seems to be in comparison.
Guys, I'm not trying to be a dick here but I see this way too often lately... Why are americans / native english speakers more often than not skipping the '°' (degrees symbol)? Units of measurement shouldn't be context sensitive. 100C means 100 Coulomb (electrical charge) and 100F means 100 Farad (electrical capacitance) but I'm pretty sure everyone on this channel knows that. I would really like to know why this is so common in informal english writing.
Oh and while I'm on that matter: I just can't get over the fact that in formal (scientific) english 'V' stands for both voltage AND volume. In Germany for example we use 'U' for Voltage and 'V' for Volume, so there is no redundancy. (i.e. in english 'R=V/I' could be interpreted as 'resistance equals volume over current' which would be nonsense)
John Ridley I have to apologize. I had no idea that the QWERTY layout doesn't include the degrees symbol. From now on it won't bother me anymore if people just skip it and you are awesome for trying to compensate by using an asterisk! Now I just need an equally satisfying answer to the voltage vs. volume problem. Is the upper case 'U' already used for something else?
Wow! I have the Tandy version of the Casio FX-790P! I never knew they re-branded it.
The Shawshank Redemption should have clued you to the pronunciation :-)
My step-Dad used to work on those Nuclear Devices. I wonder if that book has him in there.
Notice the FTDI chip on the BASYS 3 next to the mini USB port.
Edit: Micro USB
Intel Xeon E5-2630 v2 $500 each used - what US government or corporate "dumpster" did he get those from?
Winston Smith I don't want to know!
EEVblog ;-)
The mosfet rectifier was indeed designed to have heat sinks on them. If it is actually required, depends on the mosfets internal resistance and on the current drawn from the output.
Fun fact: I showed the video to my dad and he said: Hey, that Casio calculator is almost the same as the one I threw out recently....
What are the small holes all over your pcb? Assembly test points? Thanks
St0RM33 No, those are via's. It's where the copper on the bottom connect to each other. I put in quite some to ensure a decent current capability. The pcb should be able to do 15A or something like that.
I understood that they where vias but didn't pay attention to the design of the board. I though it was two layer specifically because of the circuitry. Thanks!
Linear's parts are soooo expensive. Also, we found one which has a faulty design.
So, when are we going to see an "EEVblog DIY mini nuke project"?
There is a large stump in my yard that needs to be removed and a small nuke ought to do the job :)
so, packages housing fragile components should probably have 'fragile' written on every side of the outer packaging.
South Africa's Custom inspects every incoming package. Only ever had one package denied. You did not say, but going by Stefan's name, I would guess it was from South Africa.
i heard legos patent expired, and last year i saw 4 or so different brands of brick kits in target for sale. so might be quite easy to make things compatible these days.
Dave,
I would like to see more repair and troubleshooting videos if you can fit them in.
thanks.
Thank you Bruces, Dave.
Dave is right about coming through Australia's customs with any type of nuts. Back when I came on trip a few years ago I had a bag of trail mix in my carry on. They had dogs running up and down the line and when it got to me it went absolutely crazy I thought I was going to be arrested or something.
Stefan is missing some mounting holes on his MOSFET Rectifier board.
***** Yeah, that could be. But it's also one of the most common beginner mistakes when designing PCBs.
I need to find myself some PCB design software to run on my IBM 5150...
Square traces...never seen that before.
That square routing is absolutely beautiful. I've never seen anything like it.
I also want to know what processor that ECU is running.
how complex is the firmware and what architecture does a car engine controller use?
Hi Dave. I work with pumps and you do occasionally see Multitrode controllers. It uses multiple electrodes (multitrode) and different depths in the water and uses the waters conductivity to complete the circuit between the common electrode and the various depth sensors. They use these instead of float switches which aren't as reliable as the cable insulation breaks down eventually and the micro switch in them does fail occasionally.
Another great video Dave really do enjoy your videos as I'm disabled and really look forward to them many thanks from the UK .........
My brother built a Mini-ITX system with a Xeon E3-1220 processor in it last year. His decision to go with a Xeon was the fact that Intel was doing away with virtualization extensions in the Core I7.
What are the small holes all over Stephan's pcb? Assembly test points? Thanks
Vias that connect the top and bottom plane to slightly improve current capacity and thermal dissipation. They are plated through during the manufacturing process.
*****
lolz
I know you can use audio via headphone jack to send data, but since when can you SEND audio/data audio via the headphone jack to the computer?
I used to work for a Panasonic authorized service center. Matshushita is the original name of Panasonic's parent company. They recently changed their name to Panasonic. Sort of like GM changing their name to "Chevrolet" or something.
It's pronounced Maht-shush-ta. (rough, it's difficult to indicate the Japanese pronunciation.) Somehow the "shit" is silent. A former colleague's last name is "Yamashita." Funny, our company's E-mail filter "shit canned" my e-mails to him because of those 4 letters. It's pronounced, "Yam-ahsh-ta" Romanjii pronunciations are often strange, with many silent syllables.
I miss working with the Japanese.
For those in Australia, don't you just hate when the road gets covered in like 15 inches of snow, and the trucks plowing the streets, angle the plow in a way where it ends up piling like 4 feet of snow in front of your driveway that you then need to shovel a path through before you can leave for work?
Snow? What's that?
Australia not Austria. And yes here in Austria we have a few inches of snow :D
lego brick pin spacing is free to use. which is pretty spectacular.
dave, try using a good video card for video processing. I use the GTX970 CUDA for rendering video. It halved the time it requires to encode a clip.
he did, look back to a few videos ago he bought that same graphics card and it made his video rendering actually slightly slower, it only helps for specific software and specific codecs.
you didn't move anything on that board(ecu)
The Lego bricks patent expired in 1989 so they are able to use the blocks.But using the name Lego is another issue.
69 bucks is easy too expensive for that chipkit. Considering you can get an ESP8266 and an A7 for 20 bucks.
If you ever get the chance Dave, you should visit the Titan II Missile Museum just south of Tucson Arizona. I think you'd find it quite fascinating.... The Top To Bottom tour is definitely the way to go!
Where do I get a knife like this?
at 29.00 an electronic rotary converter
Does your rendering computer not have a separate GPU to help process video editing?
Dave did a video about that, and there was no difference in speed between cpu and gpu rendering.
Is that same cpu not running an OS as well?
BashMonkeyRC
Yes, but even if gpu rendering helped, Dave uses Handbrake before uploading his videos to youtube so a better cpu is a better option for him.
one of the more interesting/odd things i enjoyed playing with was a loran c, ceramic chips all socketed, multiple boards, water tight, heavy.
"University program" :D Where's the poop, Mr. Wong?
If you or any Digilent affiliates are reading this, can I order a Nexys3 from a local recognized reseller here in Europe and _still_ have my purchase be conform the university program policy? Resellers don't seem to offer that I've noticed.
I could order it from the US, but shipping would just as easily take a big bite out of the reduced price :(
For rendering more cores is faster and not the over all speed...
Lego's patent expired ages ago. As long as the bricks dont actually say "LEGO" on them, its no problem.
Nice mailbag Dave. Thanks.
Just bought myself a TRS-80 PC-6 from eBay based on this video. :) Can't wait to tippy-tap some BASIC into the little guy!
why is square routing so bad? i usually do square routing (hobby electronics) because it seems easier to me.
I know this is about 12 months late, but those 2630v2's will still kick the shit out of a 5960x for things like rendering due to the massive core count.
1:02 You'll love Utsuho Reiuji
Not sure but if someone wrote software for a Nvidia gpu you might be able to get fast video processing
I know this is probably a noob question but... In pcb design, is there really a reason one should avoid 90 degree angles? I etch my own boards as a hobbyist and like the way square traces look. Am I missing something important? By the way, love your videos Dave!
As a circuit board heats up and cools down the board and metal expand and contract. A sharp inside corner corner is a spot a crack can and will easily start. For example the 1st jet liner crashed because it had square windows, crack started in sheet metal window corner causing fusakge skin to split open. So now all corners, especially inside corners are rounded smooth transitions. That's why you drill a round hole at the end of a crack in metal to stop it from cracking firthure.
When It wont play it I mean at 50 frames per second most laptops, Ipads refresh at 25 frames per second so the extra overhead in bandwidth and processing is completely wasted. Only very fast moving filming is worth 50 fps ie sports.
That Subaru ECU, are those mounted inside the car or in the engine bay?
Inside the car, under the dash in the middle :)
I had assumed as much. Given that is is inside the cabin of the car, there really isn't a need for it to be conformely coated right?
Mine's on the passenger floorboard, under an aluminum cover. (2003 Imprezza)
All the Subarus I've swapped have had the ECM mounted in the passenger footwell. Dave is right though, they're pretty cheaply made, but that applies to much of Subarus electronics. When I work on my BMWs I'm amazed how much more advanced they are than Subaru for the same time period. Subaru is literally 20+ years behind. Oh well.
such non electron-friendly boards in there !
Thx love hearing From you. Big up From Montréal
According to Wikipedia, a person from Hong Kong is a Hongkonger or Hong Kongese
720p50? Why not 720p60?
Great Mailbag!
I was just about to go to bed. Guess I have to stay up another 40mins. Damn you Dave!!!
Hi Dave, Love the videos - thanks.
I'm a broadcast professional. I don't know any broadcasters outside of maybe Japan using 50p, it is overkill for your audience.
I would say very few people can either see or appreciate the difference. iPads or laptops won't display it. Every extra hour you spend in post production lessens your profit.
Cheers - Pete
50 fps*
Peter Moore Say that to the thousand of people who have commented on the big difference from 25fps.
EEVblog They could be "videophools". In a double blind test they probably couldn't tell the difference :-)
ib9rt I think even a blind person could tell the difference.
I think the high framerate videos are beautiful! They feel more fluid. Anyone telling you there's no difference is using the wrong browser, or not downloading the videos at full resolution and framerate and viewing them in a proper media player on a big screen with zero chance of buffering (like me! :)
Why would you be using recording 60fps video when the content you make dosent require a high frame rate
Isn't Costa Rica the codename?
The electrons will just fly off the corners lol died laughing
Dave, about the french name that you pronounced wrong: you should watch the movie ‘Shawshank redemption’. The main character has the same name (Dufresne).
gold cap says 125°c
Dark Sun by Richard Rhodes is one of my all time favorite books.
Whatever motherboard you go with for that rendering rig go for a Supermicro brand board. They are the only company that makes good dual processor boards that are atx/eatx. The X9DRI is cheap (at least here in America) and probably overkill for what you need.
I wish you'd tear down some more modern high end gear.
So send him some! :P
He does like to tear down new test equipment, when he gets it, so there's that. Mailbag and teardowns are what WE all make of it! I personally love the retro gear. That said, I love seeing how the new stuff gets built too.
modern gear is boring. vintage gear is awesome
Fat man was the plutonium device. Little boy was a gun type uranium fission device. Just to clarify for intrested players
Oops you got it right dave I spoke too soon. Good on ya sir
My old 90 integr'a's ecu is conformal coated.
Suggestion for next Test/Teardown: "easyjumper(TM)" from Amazon.
Recently discovered this on photonicinduction´s Channel and would like to see a detailed test. Especially concerning the safety of this gadget.
Heh didn't the UK do all our nuclear bomb tests in Australia?
Idk, but I know the uk sold tritium (hydrogen 3) to the United States (source: friends with a nuclear engineer)
FrontSideBus
Pretty sure they did a lot at 'Christmas Island' which was I think around the Marshall Islands where the States also did theirs.
+FrontSideBus Yeah, they did a few before the Australians got mad and asked them to stop.
32:50 An inhabitant of Hong Kong is called a Hongkonger.
If you are a fan of Atom bomb development then if you have not seen "Trinity and Beyond" you simply must. Link to the trailer:
ua-cam.com/video/oQMnC7AM7jc/v-deo.html
"dufresne hope I'm saying that right'
...didn't you ever see Shawshank Redemption?!
i got a FPGA kit my school was donating a few days ago - its the altium live design kit with a spartan-3 on it. I watched your video on FPGA's a while back and am still a bit intimidated by the programming but i will mess with it later. Maybe wire my wall up with monitors?
I pierced my finger while removing an 8 pin op amp from a socket..... fingers yield a lot of blood.
MichaelKingsfordGray Yeah, it wasn't much, but I was shocked at the amount of blood that came out.
That knife xD
You sir... are a true Australian.
Do a mailbag week!! every day a short mailbag video to get through all your mail :D
Hi Dave. you are correct about that automobile device. I used to work for automotive company and that kind of design is not acceptable. all bigger parts must but glued it is not possible to be like than freely standing. as you said vibration would damage it so no that is not good design also i didn't see any seal or conformal coating.
hi i Love your videos, have you ever tried you hand at reverse engineering hardware devices, e.g psp, xbox 360 etc?
EEVblog you might enjoy www.amazon.co.uk/Command-Control-Eric-Schlosser/dp/1846141486 . It's terrifying how dodgy some of the bomb designs were, and how hard the forces pushed back on the engineers trying to make the bombs safer!
If you're interested in the automotive tech I could probably send you a couple immo/ecu modules from various models. I'm a locksmith so only really interested in the immobilisers but some have quite interesting designs like Mercedes Bosch ecus reclaiming injector opening current to open the next injector.
Love the back to the future car
Am I the only one who is triggered by the two leds not turned on at 12:30
Thats not a knife mate... this is a knife.
Next thing you know the alphabet boys are gonna be knocking on Dave's door lol
Well I'm currently working VHDL with a FPGA development board borrowed by the university because I can't afford one while you're getting it for free :(
I'm sure this ECU operates fine, however I must say the case it's housed in doesn't inspire words such as quality build. For the climate the sender described, I am guessing this must fit inside another water/air tight casing??? Surely.
I'm sure this is way too late, but the core i7-4770k & up will outperform this chip in all but the most heavily multi-threaded applications, even at their stock clock speeds. Fortunately, with their unlocked multipliers, they also have a great deal of overclocking headroom. I'm running a 4770k, which is normally clocked @ 3.5 GHz, at 4.4 GHz using a Noctua air cooler and a bunch of big, slow-spinning 120 mm case fans. I only had to bump vcore up to 1.25 volts to get the system rock-solid stable under 100% load.
Holy shit Dave those Intel e5-2630v2's are worth around $800 EACH!... check it out on eBay.