EEVblog

By David L. JonesTechnology Education

EEVblog episodes

November 29, 2024 EEVblog 1654 – Lee Felsenstein: The Computer Revolution & Counterculture
A full 3 hour discussion with the legendary Lee Felsenstein, designer of the Osborne 1, SOL computer, VDM-1, Pennywhistle modem, and the inventor of social media. Covering everything from the Berkeley free speech movement, the counterculture movement, his career, through to Obsorne and how he invented social media with Community Memory.
His book: https://www.amazon.com/Me-My-Big-Ideas-Counterculture/dp/B0DJ8T45F1/
https://felsensigns.com/
Forum: https://www.eevblog.com/forum/blog/eevblog-1654-lee-felsenstein-counterculture-the-computer-revolution/
00:00 – Full 3 hour talk with Lee Felsenstein
08:24 – University of California at Berkeley, and the Free Speech Movement.
29:04 – First Junior Engineer job at Ampex
36:20 – The first hackathons with Richard Greenblatt
37:33 – Hackers, Heros of the computer revolution
1:03:36 – Techical career at Ampex
1:12:52 – Atari Computers and Steve Jobs, Nolan Bushnall, and Allan Alcorn
1:15:00 – He tried to pitch social media to Steve Jobs
1:22:15 – Designing the Pennywhistle 103 modem +
1:25:36 – Marty Spergel selling kits
1:31:53 – Steve Wozniak and how the Apple 1 is NOT a personal computer
1:43:42 – Osborne Computers
1:53:22 – Osborne 1 physical design
1:57:57 – Osborne 1 development timeline
2:01:19 – The Osborne Effect wasn’t what killed the company
2 hr 59 min
November 22, 2024 EEVblog 1653 – Alkaline Battery Leakage Testing 2 – Electric Boogaloo
Revisiting the alkaline battery leakage testing with a 555 circuit from a viewer.
Forum: https://www.eevblog.com/forum/blog/eevblog-1653-alkaline-battery-leakage-testing-2-electric-boogaloo/
Final results of the first leakage testing: https://www.youtube.com/watch?v=BScnU4BT4xk
15 min
November 22, 2024 EEVblog 1652 – Why is my Lab Switchboard Wired Like This?
Why is my lab power switchboard wired like this?
Forum: https://www.eevblog.com/forum/blog/eevblog-1652-why-is-my-lab-switchboard-wired-like-this/
8 min
November 12, 2024 EEVblog 1651 – Home Electrical Switchboard UPGRADE!
I’m finally upgrading the infamous rats nest home switchboard!
https://insightelectrical.com.au/
Forum: https://www.eevblog.com/forum/blog/eevblog-1651-home-electrical-switchboard-upgrade/
00:00 – A look at the old switchboard
03:29 – Single Phase
04:57 – Surge protection
05:28 – Old school ceramic fuses
06:04 – Inside the infamous Rats Nest!
08:29 – Simon from Insight Electrical
09:09 – Could you still do wiring like this?
10:04 – What’s the plan?
11:12 – A look at the Hager surge protector
https://hager.com/au/products/download/product/asset/file/SURGE_BROCHURE_AUS_LOWRES.PDF
11:42 – Lightning strikes
12:19 – Current clamps and wiring looms
12:55 – Service neutral
13:16 – When did they stop using fuses?
14:14 – Tesla brand DIN housing
15:36 – Why use Hager circuit breakers?
16:16 – Electrician toolbag and multimeter
https://www.kew-ltd.co.jp/en/products/detail/00036/
17:07 – Let’s go!
17:53 – This is easy peasy
18:22 – What’s this outdoor switchboard rubbish?
19:00 – What’s your worst electrical shock?
19:41 – Troubleshooting bad wiring & dodgy brand circuit breakers
21:02 – I now have a Tesla brand switchboard
21:58 – It’s looking good!
23:05 – Busses
24:10 – Asbestos panels?
24:47 – Service neutral and Level 1 vs Level 2 vs Level 3 electrical licenses
25:49 – Future upgrades?
26:46 – Average sized Australian home
27:34 – Wire strippers are for appentices!
27:47 – Made in China vs Made in Germany
28:09 – Why no bus bar for the neutral?
28:49 – How common is 3 phase in homes?
30:27 – Finished panel!
31:44 – A look at the final job next day
Related videos:
Smart Meter Installed: https://www.youtube.com/watch?v=X83SPqsf5kY
EDMI Smart Meter Teardown: https://www.youtube.com/watch?v=dm-yZ1N3xmc
Mains Ripple Injection: https://www.youtube.com/watch?v=Po4b7JhpxKQ
Time lapse video 1: https://www.youtube.com/watch?v=r4RCEMtHvgo
Time lapse video 2: https://www.youtube.com/watch?v=JsOMq35Z6L4
37 min
November 06, 2024 EEVblog 1650 – Sequre HT-140 SMD Desoldering Tweezers REVIEW
Review of the Sequre HT-140 USB-C Desoldering Tweezers
https://sequremall.com/collections/diy-tools/products/sequre-ht140-2in1-hot-tweezers-soldering-iron-desoldering-repair-tool-for-smd?variant=44204748275900
Forum: https://www.eevblog.com/forum/blog/eevblog-1650-sequre-ht-140-smd-desoldering-tweezers-review/
19 min
October 31, 2024 EEVblog 1649 – Mailbag: M5stack, Beelink Mini PC, ZOYI LCR, ToughOn Battery
More mailbag!
00:00 – Everyones favourite segment!
01:00 – The very clever Edge Wedge from Metric Mind – Zero footprint programing header
https://metricmind.com/
05:19 – M5Stack Embedded processor modules
https://shop.m5stack.com/products/m5stack-core2-esp32-iot-development-kit
11:28 – Err, the polarity is BACKWARDS!
12:41 – The M5stack website and UIflow2 GUI software
21:20 – Teardown of the M5stack Core2 module
23:16 – Beelink EQi12 Mini PC
https://amzn.to/40kWbvb
26:46 – Mini PC teardown
33:42 – ZOYI / Zotech ZT-FS1 Handheld Anemometer
https://amzn.to/4e6FtCX
38:02 – ZOYI / Zotech ZT-MD1 LCR Tweezers
https://amzn.to/4frMejI
46:17 – ZT-MD1 Teardown
48:09 – Toughon 20,000mAh USB Battery Bank
https://toughon.com/products/tough-on-65w-20000mah-power-bank-bulit-in-usb-c-cable
Forum: https://www.eevblog.com/forum/blog/eevblog-1649-mailbag-m5stack-beelink-mini-pc-zoyi-lcr-toughon-battery/
55 min
October 31, 2024 EEVblog 1648 – USB Battery Bank mAh Capacity ratings are a LIE!
USB Battery bank charger capacity explained. When you are comparing battery banks you want to use a measured Output Referred capacity figure, not an Input Referred mAh or Wh figure the manufacturers marketing department gives you.
Forum: https://www.eevblog.com/forum/blog/eevblog-1648-input-vs-output-referred-battery-capacity-explained/
3 min
October 24, 2024 EEVblog 1647 – Road Based Energy AGAIN. Rouute vs R-2ENERGY
You might have thought the Rouute road based energy system was gone, but like a phoenix it has returned from the grifting ashes as R-2ENERGY!
Sadly, Discount Morgan Freeman has been replaced by discount Joe Average
https://www.r-2e.com/
https://find-and-update.company-information.service.gov.uk/company/11768960
https://www.linkedin.com/company/r-2energy/
Forum: https://www.eevblog.com/forum/blog/eevblog-1647-road-based-energy-again-rouute-vs-r-2energy/
The original video has the full debunk on why this is fundamentally a stupid idea: https://www.youtube.com/watch?v=SGwHRImfE4E
0 min
October 22, 2024 EEVblog 1646 – iFixIt FixHub Portable USB Soldering Station REVIEW
FixHub portable soldering station REVIEW
https://www.ifixit.com/products/fixhub-power-series-portable-soldering-station
Just the iron:
https://www.ifixit.com/products/fixhub-power-series-smart-soldering-iron
Schematic:
https://www.ifixit.com/Document/MeQmLlLKT2LSSKFY/Portable-Power-Station-Electrical-Schematics.pdf
Repair Guide:
https://www.ifixit.com/Device/FixHub_Portable_Power_Station
3D Model:
https://www.printables.com/model/1018125-fixhub-power-series-portable-power-station/
How intercreate designed the FixHub:
https://www.intercreate.io/case-stories/ifixit-soldering-iron-and-smart-hub
00:00 – iFixIt FixHub Portable Soldering Station
01:26 – iFixit Screwdriver set + unboxing
02:41 – The smart iron
03:41 – The Portable Power hub
05:04 – The smart iron in detail
06:51 – Auto setup & motion detection
08:43 – Just the Tip
11:18 – You can buy the smart iron on it’s own
11:49 – The hate screens and buttons on iron handles
12:49 – Designed for repairability – Teardown Time
14:51 – Schematics!
15:16 – Concern about the battery terminal spacing
16:01 – Designed by Intercreate
16:47 – Complete bare PCB
18:01 – Dum Arse Dave got the battery to go sparky-spark
18:59 – It was DEAD out of the box!, repair time!
20:47 – Testing the iron from an external USB-C battery bank
22:06 – Testing the TS-80 tips
22:23 – Power meter water test
23:46 – Same power meter test with the JBC iron
24:53 – Same power meter test with the TS80P iron
25:13 – The temperature display is suspiciously consistant
25:52 – Power up timer and temperature comparison test
27:17 – Power up timer test on solder
28:06 – Basic copper clad ground plane soldering test
29:06 – Large package soldering test
29:40 – Small package soldering test
29:57 – Repetative ground plane solder test
30:28 – JBC reference test on large package
31:06 – Temperature accuracy test
31:46 – External USB device powering featurign the µSupply
32:02 – The magnetic stand
34:04 – Trying the computer connection and command line serial port
35:39 – Back to the water test with external power meter
36:54 – Conclusion
Forum: https://www.eevblog.com/forum/blog/eevblog-1646-ifixit-fixhub-portable-usb-soldering-station-review/
Follow-up video: https://www.youtube.com/watch?v=5vbg8QEZXfY
39 min
October 14, 2024 EEVblog 1645 – $80 Quick TS11 Soldering Station REVIEW
Is the US$80 Quick TS11 80W Soldering station any good?
SPOILER: Nope, it’s pretty terrible.
Forum: https://www.eevblog.com/forum/blog/eevblog-1645-$80-quick-ts11-soldering-station-review/
18 min