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Mailbag – With the worst soldering job ever! Forum HERE SPOILERS: A giant outdoor flippy dot display. The worst soldering job ever Avometer Model 7 Mk2 teardown Video enhancer teardown Cheap-arse soldering iron teardown https://www.youtube.com/user/brotschuh Ancient Sony Handycam Elektor Magazine Elektor 6 digit VFD tube clock kit https://www.elektormagazine.com/news/new-elektor-labs-kit-vfd-tube-clock-with-esp32 $1M Pandora …

Teardown of the ANENG Q1 multimeter Now shot and available in 4K resolution! Forum HERE Podcast: Download

A review of the new low cost $38 ANENG Q1 Multimeter How dos it compare with the $25 AN8008? Forum HERE Podcast: Download

Some experiments on the Casio FX260 Solar II scientific calculator. Improving the solar capacity, trying out a Tritium nuclear battery!, current measurement, and probing of the PCB and LCD signals. BONUS FX991EX Teardown and soldering iron burn! Forum HERE Podcast: Download

Review and teardown of the Casio FX260 Solar II pocket scientific calculator. How good is a $9 scientific calculator? FX-991EX Calculator Forensics Forum HERE Podcast: Download

Running the numbers on the W-Charge Infrared laser wireless charging system, does it work?, is it practical?, what is the efficiency?, how much power can it deliver?, is it dangerous? And the laser power is HOW MUCH?! CORRECTION: The laser output power was stated incorrectly, it was assuming the input …

Dave discovers a potential systemic manufacturing issue with Lifud LED light drivers. A repair of two of Dave’s failed Lifud LED studio panel light drivers. Forum HERE Podcast: Download

What is this mystery bit of Sony equipment? It’s probably not what you think… A look at an obscure bit of niche industry gear. Actual teardown starts at 10:00 Forum HERE Podcast: Download

What’s inside a DIP crystal oscillator module? A 2 minute teardown turns into 17 minutes, because, well, it’s Dave. Includes a revisit of the bypass capacitor video. Oscillator chip datasheet Forum HERE Podcast: Download

The NTSB today released the report into the fatal Uber Autonomous car accident. TLDR; The RADAR, LIDAR, and cameras DID detect and classify pedestrian bicycle correctly. The system DID determine that emergency braking was required. But Uber disabled the systems emergency braking feature in autonomous mode. Uber also disabled Volvo’s …

An unbelievable fault in Dave’s Alesis M1 Active 520USB powered studio monitor speaker. Can you discover the culprit before Dave does? This was supposed to be a boring trivial repair of a power LED, but it turned into something much more interesting. Forum HERE Teardown VIDEO Podcast: Download

Dave looks at the 5 year data on his 3kW home solar power system. What was the payback period? And will adding a Tesla Powerwall 2 lithium ion battery energy storage solution be worthwhile? PVoutput data HERE Forum HERE Installation VIDEO Previous Update HERE Podcast: Download

An in-depth practical visualisation of how bypass capacitors work at both high and low frequencies. Bulk decoupling capacitors vs bypass capacitors. Capacitor placement and types are tested and the results examined. How package inductance can have a large effect. Loop area and what is means, it’s impact on EMC emissions, …

Some quick extra tests on the 6 of the 14 pocket multimeters from Part 1 Which meter *won’t* survive testing? Forum HERE Podcast: Download

14 pocket multimeters from $8 to $65 are torn down and compared for feature set and build quality. Ranging in price from $8 to $65, which one is the best in each price category? Part 2 coming tomorrow. Timestamps: 6:07 XB866 Wun Hung Lo 9:42 ANENG AN8203 15:47 $10 Shootout …