Category: Uncategorized

How to repair the parts that explode in Lenovo Yoga laptops

Lenovo Yoga laptops, especially those from the “900”, “920”, “930”, and “940” series, have a design defect where their power circuitry can self-destruct. The company will not acknowledge…

STM32 DMA Cheat Sheet

STMicro’s documentation about the subject is some of the most terse documentation I’ve ever seen in the business! This cheat sheet is a work-in-progress. DM-What? The STM32 microcontroller…

Restoration of the M.V. Maritol

In early 2018, friends and I decided to work on something rather unorthodox from our regular activities –we set out to bring new life into an old steel…

How to enable 3-pin HP laptop chargers

220k resistor from center pin to +19V for fast mode. 1M resistor for ultra slow charging mode.