EEVblog

Powering up the Banshee ultrasonic leak detector LED display to see how the display is multiplexed turned out to be very interesting! With special guest debugger, Sagan, who invents a new industry term “free range data”. Forum: https://www.eevblog.com/forum/blog/eevblog-1493-the-macgyver-project-part-2/ Youtube: Odysee:

The $5 Hantek oscilloscope is repaired, and I’m giving it away to a youngster in Australia. If you want the scope, enter here: https://www.eevblog.com/forum/contests/giveaway-(oz-only)-hantek-oscilloscope/ Forum: https://www.eevblog.com/forum/blog/eevblog-1492-$5-oscilloscope-repaired-oz-giveaway/ Youtube: Odysee:

Part 1 reverse engineering the interface on the LED display of the Banshee Ultrasonic gas leak detector to make a MacGyver type countdown timer THING (for demonetisation purposes). This will be a choose your own adventure project, I don’t have anything planned, so let me know what you want to see! Forum: https://www.eevblog.com/forum/blog/eevblog-1491-the-macgyver-project-part-1/ Youtube: Odysee:

Dave tries Jeri Ellsworth’s Tilt Five augmented reality AR glasses for the first time! Unboxing, first reaction, and a bit of a first user review. 00:00 – Tilt Five AR Kickstarter Glasses 01:42 – Unboxing 06:34 – The retroreflective game board 08:58 – Plugging into USB3 and fan cooling 09:35 – The glasses design robustness ...

How much power do Enphase and other solar micro inverters draw at night time when switched off? It’s actually a very interesting question involving real and apparent/reactive power, the system topology, and whether your storage battery is on-grid or off-grid, and also its efficiency curve. Let’s measure it, do some calculations, and look at when ...

You might think you know how film capacitors fail and degrade in capacitance over time – self-healing due to surges, right? WRONG! Capacitor expert and AVX Fellow Ron Demcko confirms what’s really going on after a teardown of some failed and one good polypropylene X class capacitor. 00:00 – Teardown of a some failed film ...

The failed PedalCell CadenceX Bike Generator from the previous mailbag video is tested, torn down, analysed, hilrariously laughed at, and dodgily repaired. https://pedalcell.com/ 00:00 – Failed Pedalcell generator – getting the pinout 02:00 – The PCB 02:40 – Oscilloscope rotation test 03:45 – Dremel speed Captain! 04:22 – Generator teardown 05:32 – Hmm, what’s going ...

Extended version of the Mailbag 1483 teardown of the Kaba Mas X-09 High Security Electronic Lock Teardown Youtube: Odysee:

Bumper Mailbag! Forum: https://www.eevblog.com/forum/blog/eevblog-1483-holy-mailbag-bomb-batman/ SPOILERS: 00:00 – Contact Harald Covid Bluetooth Tracing 04:24 – Kaba Mas X09 High Security Electronic Tumbler Lock Teardown 16:53 – Failed PedalCell CadenceX Bike USB Power Generator 18:00 – Odysee vs Patreon for supporting creators 19:06 – PedalCell CadenceX Teardown 26:54 – TikStation Breadboard USB power supply https://www.tikstation.com/ 38:54 – ...

A follow up to the previous video on repairing the heater. A viewer asked how the capacitor diode rectifier gave a 24V output. The key is in the zener regulator, so this vidoe looks at how mains powered zener voltage regulators work, and their limitations. X class capacitor and self healing. Forum: https://www.eevblog.com/forum/blog/eevblog-1482-mains-capacitor-zener-regulator-circuit/ Youtube: Odysee: