EEVblog

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 07:39 – Removing the keypad security mesh + a SURPRISE...

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 – Battery removal 16:29 – i. MX258 Secure ARM processor Links: h...

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

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? 03:1...

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 side of the RF block...

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 – The flipchip die under the microscope 04:48 – Thermal paste application triggering 06:...

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 + 34401A VFD Replacement https://hubequip.net/pr...

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/

Dave’s Rode PodMic USB failed, so might as well do a quick teardown before returning it under warranty. Forum: https://www.eevblog.com/forum/blog/rode-podmic-usbs-are-failing!/

Using an Waveshare ESP32 RS485 module on the Brink Flair 400 home air ventilation system to email alert if the inlet pressure goes about 400 pascals. And using Claude AI to generate the Arduino code required. 00:00 – Brink Flair 400 ventilation system 02:04 – Waveshare ESP32-S3-RS485-CAN module 06:32 – Using Claude to generate Arduino code 17:04 – Pirate Mode Activated 24:2...

I guess I have 1 million subscribers now. Forum: https://www.eevblog.com/forum/blog/eevblog-1764-can-i-retire-now/

Meet Dylan Forum: https://www.eevblog.com/forum/blog/eevblog-1763-meet-dylan/

What lurks inside Dave’s decade old Logitech keyboard? Gross-out WARNING! Forum: https://www.eevblog.com/forum/blog/eevblog-1762-logitech-keyboard-vs-food-gross-teardown/

Teardown of the new Micsig HMO14 4CH 200MHz 6th generation tablet oscilloscope with built in multimeter. Follow up on the lack of input ptotection! https://www.youtube.com/watch?v=W2o8otvVML4 Forum: https://www.eevblog.com/forum/blog/eevblog-1761-micsig-mho14-tablet-oscilloscope-teardown/ 00:00 – Micsig MHO14 12bit 6th generation oscilloscope 05:00 – Rubber baby buggy bumber 08:13 &#82...

Today in the dumpster! Forum: https://www.eevblog.com/forum/blog/eevblog-1760-today-in-the-dumpster-(july-12th-2026)/

The 10th ACES hardware meetup in Sydney at Engineers Australia. All talks and open mics. https://luma.com/sydney-114f 00:00 – Engineers Australia HQ 03:19 – Intro 05:42 – Cibby Pulikkaseril from Zabidou https://www.zabidou.com/ 14:42 – Matt Crott from MAKO Aero – Prototype to Product https://mako.aero/ 25:28 – Panel discussion with Cibby, Matt and Brendan Hill f...

A Greek Dumpster TV LED Backlight replacement Tragedy Forum: https://www.eevblog.com/forum/blog/eevblog-1758-a-greek-dumpster-tragedy/ 00:00 – Dumpster LG 4K TV backlight phosphor failure 02:34 – LED spectrum measurements 03:48 – Teardown 08:49 – LCD TV layers 09:36 – Come-a-gutsa 11:50 – Through the magic of Ali Express 14:49 – Replacing the LED strips 17...

Sharp GF-7600 Boombox Repair Part 2 Electric Boogaloo Dismantling, cleaning and fixing the dodgy mains switch contact. Forum: https://www.eevblog.com/forum/blog/eevblog-1756-57-boombox-bodge-repair/

Bodge repairing THE boombox of the 1980’s, the Sharp GF-7600 for a 1980’s party.

2026 Electronex Show Walkaround Forum: https://www.eevblog.com/forum/blog/eevblog-1754-2026-electronex-show-walkaround/

Bart from Cleverscope returns to discuss and show off designing a 2000V isolated oscilloscope, and demonstrates measuring high voltage GaN transistors and Solid State Transformers. https://cleverscope.com/products/CS548 Forum: https://www.eevblog.com/forum/blog/eevblog-1753-designing-a-2000v-isolated-oscilloscope-(cleverscope)/

WTF were Texas Instruments thinking changing the design and major specs of the 45+ year old jellybean NE5532 audio opamp WITHOUT changing the part number?! New datasheet: https://www.ti.com/lit/ds/symlink/ne5532.pdf Old datasheet: https://www.mouser.com/datasheet/2/405/ne5532a-556776.pdf Change Notification: https://mm.digikey.com/Volume0/opasdata/d220001/medias/docus/5726/PCN20231114002.1.pdf Ons...

5 different ways to measure phase angle on your oscilloscope. 00:00 – What is phase angle measurement? 01:48 – Automated measurement 06:38 – Cursor Measurement 12:24 – Graticule measurement 13:55 – Positive or Negztive? A trap for young players 14:50 – Another graticule method using horizontal shift 16:00 – How to increase horizontal measurement resolution...

More Mailbag! 00:00 – Linus Tech Tips Screwdrivers! https://www.lttstore.com/collections/ratcheting-screwdrivers https://www.lttstore.com/collections/precision-multi-bit-screwdriver 15:30 – Closer look at the screwdrivers 18:52 – Red Light Skin Therapy device 22:31 – Spectrum measurements 27:19 – EZABoard Arduino Learning Kit https://ezaboard.com/ Videos shot on 16mm...

Review of the Werewolf VFLEX USB-C power supply cable system. https://werewolf.us/collections/werewolf-products/products/vflex-3-pack-starter-kit Forum: https://www.eevblog.com/forum/blog/eevblog-1749-werewolf-vflex-usb-c-power-supply-adapters/