A Die-Level Look at the Pentium FDIV Bug - The early 1990s were an interesting time in the PC world, mainly because PCs were ... - https://hackaday.com/2024/12/29/a-die-level-look-at-the-pentium-fdiv-bug/ #reverseengineering #floatingpoint #lookuptable #decapping #division #pentium #intel #fdiv #pla

Laser Fault Injection, Now With Optional Decapping - Whether the goal is reverse engineering, black hat exploitation, or just simple cu... - https://hackaday.com/2024/09/20/laser-fault-injection-now-with-optional-decapping/ #reverseengineering #faultinjection #laserhacks #decapping #ablation #package #silicon #epoxy #laser #die

Reverse Engineering Smart Meters, Now with More Fuming Nitric Acid - If you’re lucky, reverse engineering can be a messy business. Sure, there’s someth... - https://hackaday.com/2024/01/13/reverse-engineering-smart-meters-now-with-more-fuming-nitric-acid/ #reverseengineering #fumingnitricacid #micropositioning #destructive #microscopy #smartmeter #chemistry #decapping #fna

Oddball LCDs Reverse Engineered Thanks to Good Detective Work https://hackaday.com/2023/12/12/oddball-lcds-reverse-engineered-thanks-to-good-detective-work/ #ReverseEngineering #reverseengineering #chiponboard #decapping #driver #epoxy #COB #lcd

Oddball LCDs Reverse Engineered Thanks to Good Detective Work - Is there anything more discouraging to the reverse engineer than to see a black bl... - https://hackaday.com/2023/12/12/oddball-lcds-reverse-engineered-thanks-to-good-detective-work/ #reverseengineering #chiponboard #decapping #driver #epoxy #cob #lcd

Hackaday Links: March 26, 2023 - Sad news in the tech world this week as Intel co-founder Gordon Moore passed away ... - https://hackaday.com/2023/03/26/hackaday-links-march-26-2023/ #jameswebbspacetelescope #hackadaycolumns #hackadaylinks #indianapolis #gordonmoore #decapping #exoplanet #fairchild #mooreslaw #paulallen #resistors #silicates #starlink #deorbit #slider #petrel #intel #jwst

Creating a Game Boy ROM From Pictures - There are very few legal ways of obtaining ROM files for video games, and Nintendo... - https://hackaday.com/2023/03/23/creating-a-game-boy-rom-from-pictures/ #nintendogameboyhacks #reverseengineering #photographs #decapping #gameboy #chip #data #vias #cad #rom

How _does_ your phone track its relative position/orientation in space? Tiny little accelerometers and gyroscopes!

I dissected an IMU so we could trace it out in detail, play with printed models, analyze high speed footage and look at pretty SEM images

https://www.youtube.com/watch?v=9X4frIQo7x0

Cheers to all the folks I badgered with questions! The gyros in particular were a bit of a challenge to figure out, since they don't operate quite like a "textbook" MEMs gyro (or rather, they are more sophisticated in their sensing)

We're taking a look at IMUs!

I decapped and scanned a 6-axis accelerometer/gyro chip, traced it, printed demonstration models, and filmed some high speed footage of how they work.

Video is live now on Nebula, will be up on YT this weekend!

https://nebula.tv/videos/breakingtaps-how-your-phone-knows-up-from-down

3ax accelerometer/gyro chip. Composite of 3 different chips that I decapped. Didn't get a complete view of top right unfortunately.

I thought the bottom was accel at first, but thinking they are gyros now? Dual mass vibrating kind? Lack of combs on the top devices is throwing me, just a few plates that I can see.

There are "pits" or cutouts under two of the three devices under the bottom, which is contributing to my feeling they are gyros (to help allow coriolis distortion)

Vintage Fairchild IC Proves Tough to Decap - You’d think that something called “white fuming nitric acid” would be more than corrosive enough t... more: https://hackaday.com/2019/05/27/vintage-fairchild-ic-proves-tough-to-decap/ #whitefumingnitricacid #fairchildul914 #classichacks #sonication #ultrasound #decapping #teardown #silicone #milling #laser #wfna