EEVblog No Script, No Fear, All Opinion

Is a $95 Hioki Multimeter any good? A look at the DT4215 that is only available in China. 00:00 – You can buy a Hioki for $95? 01:33 – Fluke also do this. The Fluke 19 from 1999 04:31 – Don’t turn it on, take it apart! 06:08 – The …

Looking at the Ledger Nano X hardware supply chain attack 00:00 – Ledger Nano X hardware wallet supply chain attack 06:16 – This is not a new thing 09:00 – DaveCAD explaining how the Ledger Nano X works 11:40 – Common Criteria EAL5+ security verification 12:34 – How the hack …

You can erase LCD pixels with light! Semiconductor and photonics physics in action on the µTimer LCD! Part 4 in the µTimer design series. 00:00 – Reflective vs Transflective LCD 03:39 – Erasing LCD pixels using light! 05:02 – How the physics works 06:30 – We have a problem in …

Part 3 of the µTimer project. Measuring the power consumption of the LCD leads to a masterclass in power measurement and related traps. 00:00 – Part 3 of the uTimer project 02:36 – LCD Discontinued!? Was GoodDisplay, now Osptek https://www.aliexpress.com/item/1005012678062314.html 04:26 – LCD power measurement with the Otti Arc 05:50 …

Tearing down the failed Miele W1 washing machine door interlock mechanism and reverse engineering how it works to find what failed. EG-380757 MN 10773383 Part 1: https://www.youtube.com/watch?v=xdCVl1qmH3w Forum: https://www.eevblog.com/forum/blog/eevblog-1777-miele-w1-door-interlock-teardown/ Podcast (podcast2): Download

Get paid $175/hr to train AI how to use Altium Designer so it can replace your own job as a PCB designer! https://jobs.micro1.ai/post/cca1a8fa-3a37-4485-91f0-99d1fe2b95bc https://openai.com/index/gpt-6-astra/ Forum: https://www.eevblog.com/forum/blog/eevblog-1776-$175hr-to-teach-ai-how-to-automate-altium-pcb-design/ Podcast (podcast2): Download

More Mailbag! 00:00 – DrPD UBC-C Open Source PD Protocol Analyser https://www.crowdsupply.com/t76-org/dr-pd https://t76.org/drpd/docs/ https://github.com/T76-org/drpd/tree/main 24:34 – Sabrent USB-C and USB-A 8 power 252W Charger https://link.amazon/B03E4bswK 35:03 – The Audio Circuits Cookbook: Building Blocks and Tools to Design Professional Audio Devices https://link.amazon/B0auUWq4f Forum: https://www.eevblog.com/forum/blog/eevblog-1775-mailbag/ Podcast (podcast2): Download

Part 2 of the PayPal Here teardown, because everyone wanted to know what was under the anti-tamper security mesh, so lets take a look. Datasheet: https://www.nxp.com/docs/en/data-sheet/IMX25CEC.pdf 00:00 – We return to the PayPal Here POS terminal teardown 04:11 – They want to stop Skimming hacks, it’s not just the keys …

Teardown of the now obsoleted PayPal Here POS Payment terminal. 00:00 – PayPal Here POS payment terminal 03:56 – Teardown 05:10 – Case security clips 06:31 – Battery 08:02 – Security tamper mesh 10:43 – POS Terminal companies and my job at KeyCorp 12:14 – Bye Bye secure keys 14:24 …

A follow-up to the previous video showing the complex AC impedance answer to the OpAmp exam question. Part 1: https://www.youtube.com/watch?v=nDEGqme5Z4g https://www.eevblog.com/forum/beginners/how-to-analyze-the-opamp-circuit/ OpAmp playlist: https://www.youtube.com/playlist?list=PLvOlSehNtuHu2FviAaZaiyXwN41G4b1Lf Podcast: Download

Dave answers an exam question on OpAmps that’s interestingly tricky. Bonus opamp tutorial on biasing. Part 2: https://www.youtube.com/watch?v=33rS0oLULqw https://www.eevblog.com/forum/beginners/how-to-analyze-the-opamp-circuit/ OpAmp playlist: https://www.youtube.com/playlist?list=PLvOlSehNtuHu2FviAaZaiyXwN41G4b1Lf 00:00 – A tricky exam question 01:45 – What’s missing? 03:11 – The two most important Opamp rules 04:44 – THINK about what sort of exam you are …

Teardown and reverse engineering of the new Rigol RSA800 series Real Time Spectrum Analyser, from 4.5GHz to 13GHz. 4.5GHz RSA804 8.5GHz RSA808 14GHz RSA814 https://www.rigolna.com/products/spectrum-analyzers/rsa800/ 00:00 – Rigol’s new RSA800 Real Time Spectrum Analyser 06:48 – Teardown 11:42 – RF front end box teardown. Mad Man Muntz 14:55 – Back …

Can you repair a PSU by REMOVING a component? Well, in this case, yeah, kinda. Not recommended for new designs, but it works (for now) because the design margins allowed it. 00:00 – My NerdQaxe++ Bitcoin miner has failed. Guru Meditation! 02:13 – Bitmain 1370 chipset thermal paste 03:54 – …

More Mailbag! 00:00 – Dave & Dylan open random Mailbag 03:49 – DIY bodged laser engraver 04:14 – MPPT Solar charge controller 04:56 – Mixed bags 06:01 – DLP Projector Mirror Arrays 08:05 – TDA2030A Power Amp 08:39 – Analog/Digital combo watch 12:23 – Solar Panels 13:52 – Engineering Spelling …

Teardown and detailed analysis of the Harogic PXN-90 9GHz Spectrum Analyser. https://www.harogic.com/product/harogic-px-series-standard-spectrum-analyzer-receiver/ Forum: https://www.eevblog.com/forum/blog/eevblog-1767-harogic-pxn-90-9ghz-spectrum-analyser-teardown/ Podcast: Download