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More Mailbag! Forum HERE Podcast: Download

Part 2 of the LED Flicker investigation. Modding the driver for input and output capacitance and it’s effect on power factor correction and thermal performance. Podcast: Download

Dave investigates why his new LED panel lights are flickering on camera. Teardown and measurement time. Forum HERE Podcast: Download

The LifeSaber Kickstarter outdoor survival tool is a classic example of a Jack of all trades, master of none product design. A master class in how not to design a practical product. Yet another wind-up/crank USB charger tool with everything but the kitchen sink. It even has ALIENS! Compare Dave’s …

Dave got one of these newfangled slim wallets, the Stealth Razor from Airo Collective, a Kickstarter project, the world’s thinnest wallet. Does it actually replace a full traditional leather wallet? How practical is it? Does the RFID protection work? Podcast: Download

A tutorial on how to read timing diagrams. An essential skill for designing and understanding digital logic, FPGA and microcontroller designs and datasheets. Forum HERE Podcast: Download

Dave found this crazy bargain of the century no-name $9 0.02% class multifuction process calibrator on Aliexpress. Is it any good? Actually, it’s an AIMOmeter AMPX1 that sells for over $200 on ebay, so what gives? How can they possibly manufacture and sell a 0.02% class device for under ten …

When does PCB propagation delay matter in PCB layout? Dave goes down the rabbit hole from DIY TTL processor design to DDR memory design and layout. DDR memory termination. What is a timing budget? When is it important? How does signal integrity matter? When do you have to do serpentine …

How to convert a dumpster Sony CRT TV into a retro computer RGB monitor. Going through the design considerations, schematics, datasheets and the “jungle chip” and how to feed in the RGB signal and switch it. Also a look at the the old school CGA video interface on an IBM …

Can you find the fault in the IBM PCjr wireless keyboard before Dave does? A most excellent adventure in troubleshooting. Forum HERE Podcast: Download

More Mailbag! Forum HERE SPOILERS: Mailbag SPAM! Arizona If it smells like chicken, you’re holding it wrong. 2:57 https://www.tympan.org Open source hardware audio hearing development system. 11:20 Circuit Scribe conductive ink learning kit https://www.circuitscribe.com/ 24:20 Sony RM-440 video editing unit teardown 30:42 Pulse Sensor https://www.pulsesensor.com 31:36 DIY Mouse Kit https://github.com/biomurph/Mouse …

Repair and teardown of a Sony CFD-V10 portable stereo boombox Service manual Forum HERE Podcast: Download

Part 2 of the power-up counter project, investigating the Sharp Memory LCD & custom LCD’s + microcontroller (MSP430 + ST ARM + Microchip) low power design with supercaps, SMD ceramic batteries, and coin cells. Forum HERE Podcast: Download

Looking for a segmented e-ink / e-paper display solution for a power up display counter module project. Forum HERE Podcast: Download

Go back in time to 1980 and a look at what consumer electronics and parts were available from Tandy in the UK. 1980’s Tandy Voice Recognition Chip: https://www.youtube.com/watch?v=kFth9K_IvwA Dick Smith’s new channel: https://www.youtube.com/watch?v=80seR-2BPyk Forum HERE Podcast: Download