EEVblog

EEVblog

All my personal data was STOLEN from the Western Australian Government's Perth Mint thanks to a third party data breach.
Obvious serious identity theft implications for customers as a result.

Perth Mint CEO: https://www.youtube.com/watch?v=UsjHlgTchnE

Forum: http://www.eevblog.com/forum/blog/eevblab-52-my-personal-data-stolen-from-the-government!/

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The new official Power Over Ethernet (PoE) hat for the Raspberry Pi 3 B+ has been reported to fail with an overcurrent error when powering USB devices.
Dave investigates and narrows it down until, well, something goes horribly wrong...

Rpi forum: https://www.raspberrypi.org/forums/viewtopic.php?t=220984

Forum: http://www.eevblog.com/forum/blog/eevblog-1122-raspberry-pi-3-poe-hat-fail-investigation/

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Who saw it coming?, Fontus have filed for bankruptcy!
The infamous "self-filling water bottle" that raised $340k on Indiegogo has gone bankrupt and delivered nothing.
You 'canna beat the laws of physics Captain!

https://www.ksv.at/insolvenzfaelle/insolvenz-fontus-water-technology-gmbh-1030-wien

https://www.indiegogo.com/projects/fontus-the-self-filling-water-bottles#/

Forum:

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Gav "The Mechatronics Guy" explains polarised light and demonstrates his physical laser cut models to help understand this in his quest to make a pixel mapped polarised light camera.
https://tinkerings.org/

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Bart Schroder from Cleverscope talks about the challenges in designing the world's highest performance isolated oscilloscope.

Measurement demo on a 500V MOSFET H-Bridge and how to accurately probe it. Then a teardown and walk through of the design of the new CS448 1kV 4CH 200MHz 14bit isolated oscilloscope and the custom probes, power supplies and optical fibre interfaces they had to design to get this performance.

https://cleverscope.com/products/CS448

Forum: http://www.eevblog.com/forum/blog/eevblog-1119-designing-a-1kv-isolated-oscilloscope/

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Why do most powered studio monitor speakers have a low level audible background noise?
Time for some investigation on the KRK Rokit 6 studio monitor speakers to track down where the noise is coming from.

The black gunk of death: https://www.youtube.com/watch?v=dftkoD7LG0A

Forum: http://www.eevblog.com/forum/blog/eevblog-1118-why-are-studio-monitors-noisy/

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Are power planes in a 4 layer PCB any good as a capacitor?
Can it work as one big bypass capacitor?
A look at an discussion on PCB layer stackups, and some measurements on 4 and 8 layer PCB power planes with different prepreg thicknesses and how well they work as a capacitor.

https://www.xilinx.com/support/documentation/application_notes/xapp623.pdf
https://www.researchgate.net/publication/242415439_High_Performance_FPGA_Bypass_Networks

Forum: http://www.eevblog.com/forum/blog/eevblog-1117-pcb-power-plane-capacitance/

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The 2nd EEVblog meetup is happening on Wed 5th September after the Electronex show.

https://www.meetup.com/EEVblog-Electronics-Engineering-Meetup/events/253672185/
https://www.electronex.com.au/

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Circuit building block time. The capacitance multiplier and how it gives almost negligible power supply ripple compared to a voltage regulator.
Whiteboard theory and then some bench demonstrations and experiments. Plus a twist at the end that proves that the "Capacitance multiplier" is perhaps one of the most mis-named circuits of all time.

Forum: http://www.eevblog.com/forum/blog/eevblog-1116-the-capacitance-multiplier/

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Edited version of the live stream using KiCAD 5 for the first time to edit the 4 layer Gigatron PCB, generate gerbers for manufacture, and choosing a PCB supplier.
Lots of talk about PCB layout, manufacturability, and feedback for the KiCAD team on PCB tool usability.

#KiCAD #PCBdesign

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Live stream of Dave using KiCAD 5 finishing off the 4 layer Gigatron PCB for manufacture.

#PCB #PCBdesign #KiCAD

Dave looks at some traps in chips and their modes of operation. In this case the TI LM2776, a look a the classic 7660 charge pump voltage inverter, and output ripple and ways to reduce it.
Parametric searching, and a look at some interesting rail inverters.
The uSleeve: https://www.eevblog.com/product/usleeve/

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Dave recounts the story of a critical deadline project and the scramble to make it to DesignCon 2008 with the new Industrial Altium Nanoboard design.

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Review of the new 18W USB-C TS80 temperature controlled portable soldering iron.
TLDR; Highly recommended, money well spent if you need a portable iron solution, but you need a QC3 battery pack.

Forum: https://www.eevblog.com/forum/blog/eevblog-1114-new-ts80-usb-soldering-iron-review/

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Is a $5 8W USB soldering iron actually useful?

Forum: https://www.eevblog.com/forum/blog/eevblog-1113-is-a-$5-usb-soldering-iron-useful/

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A look at one of the world's first handheld electronics games, the classic 1978 Parker Brother game Merlin The Electronic Wizard.
It just so happens to use the world's first microcontroller, the 4 bit Texas Instruments TMS1000
Some history and a teardown.
http://www.theelectronicwizard.com/

Nice history of the Merlin development: https://www.xconomy.com/national/2014/02/28/bob-doyle-and-the-magic-of-merlin-the-first-mobile-game/

Forum: http://www.eevblog.com/forum/blog/eevblog-1111-worlds-first-microcontroller-electronic-game/

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Some more random vintage computer warehouse diving (climbing actually).
https://www.dontronics.com/

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The Australian Computer Museum Societies' warehouse has to shut down next week, so Dave goes warehouse diving.
If you know of someone willing to donate warehouse space in Sydney, please let me know.
UPDATE: Please don't contact them with offers of small donations space, they need a HUGE space, as in hundreds of square meters. Thanks.

#1111 will be coming soon!
Be sure to subscribe to EEVblog2 in order to see some of the teardowns: https://www.youtube.com/eevblog2

Forum: http://www.eevblog.com/forum/blog/eevblog-1112-vintage-computer-warehouse-diving/

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More than an hour of Mailbag!

Forum: https://www.eevblog.com/forum/blog/eevblog-1110-mailbag/

SPOILERS:
Sony DVO-1000MD medical device video DVD recorder teardown
8:09 Security ISA card teardown from the 1980's
18:39 Power Grid the board game!
25:02 USB soldering iron
27:21 TI-nSpire CAS+ calculator PROTOTYPE!
35:28 DIY JBC/Hakko soldering iron controller
https://www.team-ncrc.com/shop/product/soldering-station-jbc?utm_source=eevblog&utm_medium=mailbag
41:49 UV LED lamp for PCB exposure
45:10 DIY battery spot welder
https://www.keenlab.de/index.php/portfolio-item/kweld/
51:44 10W Laser Diode circuit PCB design review
https://www.kickstarter.com/projects/stac/stac-researching-the-impact-of-life-in-space
1:00:00 EL light teardown
1:02:41 IC2 rotary encoder Kickstarter
https://www.kickstarter.com/projects/1351830006/i2c-encoder-v2

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David Ledger explains the Howland Current Pump building block circuit.

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A step-by-step walk-though of a typical modern low cost 3GHz "All Digital IF" spectrum Analyser design.

Forum: http://www.eevblog.com/forum/blog/eevblog-1109-spectrum-analyser-design-walk-through/

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How do Casio make a full size velocity sensitive electronic keyboard for US$175?

Yamaha PSR80: https://www.youtube.com/watch?v=BKHq1FkQjsA

Forum: https://www.eevblog.com/forum/blog/eevblog-1108-casio-ct-x700-keyboard-teardown/

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Dave tells the story of his great idea to patent embedding exercise information into MP3 files.
A great idea at the wrong time, thwarted by the Apple iPhone !

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Why does this 4K BENQ monitor mysteriously switch off on it's own?
Inadvertently re-visiting an old video.
The chair strikes back!

Original videos Part 1 to 3
https://www.youtube.com/watch?v=sUG_sjS67K4
https://www.youtube.com/watch?v=weJ4JdFat8o
https://www.youtube.com/watch?v=4pwI2NebT90

Forum: http://www.eevblog.com/forum/blog/eevblog-1107-shocking-4k-benq-monitor-problem!/

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A look at the new low cost $220 Pace ADS200 130W cartridge tip AccuDrive Production Soldering Station
Can it beat the higher priced JBC CD-B station?

7:00 The new 130W TD200 soldering iron pencil
9:34 Teardown
14:18 First Turn On
16:10 Temperature accuracy test
18:06 Setup options
20:58 Burn proof lead test
21:42 Soldering ground plane thermal capacity test vs JBC
25:48 Tip life and iron plating
27:30 General discussion on soldering temperature
30:31 Thermal response test
33:53 Power consumption
35:29 Heater waveform measurement
37:08 Conclusion

https://paceworldwide.com/ADS200/

Forum: http://www.eevblog.com/forum/blog/eevblog-1106-pace-ads200-soldering-station-review-(jbc-killer)/

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Created 10 months, 4 weeks ago.

155 videos

CategoryScience & Technology

NO SCRIPT, NO FEAR, ALL OPINION
An off-the-cuff Video Blog about Electronics Engineering, for engineers, hobbyists, enthusiasts, hackers and Makers
Hosted by Dave Jones from Sydney Australia

DONATIONS:
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EMAIL:
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Fan mail: [email protected]
Hate Mail: [email protected]

PLEASE:
DO NOT ask for personal advice on something, post it in the EEVblog forum
I get over 80,000 video views *each day* and that means a *lot* of email asking for advice, I simply can't keep up.
So I will no longer answer such emails as a rule, sorry.
I read ALL email, and try to read all Youtube comments, but please don't be offended if I don't have time to reply.
I don't read or respond to ANY private messages on youtube.

Snail Mail:
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PO Box 7949
Baulkham Hills NSW 2153
AUSTRALIA