IC reverse engineering, #mtvre, nuclear technology, etc
Jul 5 • 9 tweets • 3 min read
How we fixed EDS (elemental analysis on SEM)
Background: EDS works by measuring x-rays emitted after an electron strikes and fluoresces an atom. Each element has characteristic wavelengths it emits allowing an element to be identified via spectroscopy
Copper is a great calibration target as it has a few distinct wavelengths it omits. We used OFHC from an old high vacuum gasket
May 22 • 16 tweets • 9 min read
Bought 30+ USB serial converters. They claim PL2303 core and the case molding is very sturdy...but can we verify what's actually inside?
Branded Trulink 26887. Came in lots of 10
Instructions mention up to Windows 7 which dates them to maybe roughly 2010 (Windows 8 came out in 2012)
Feb 25 • 7 tweets • 4 min read
Play-a-Sound's "Scooby-Doo! Where Are You" contains a Sunplus PA5280
Opening the electronics
Feb 25 • 10 tweets • 4 min read
Atmel AT29035 from LiftMaster SECURITY+ garage door opener
Seems to be an unusual part number. I can find product change notifications but not a datasheet. Package markings (125C0218) seem to be remarked for vendor "R"
Jan 29, 2021 • 20 tweets • 8 min read
#RaspberryPiPico silicon teardown time!
Board as received optical + x-ray images
Jan 26, 2021 • 4 tweets • 3 min read
Motorola MC14500 "Industrial Control Unit (ICU)," an early programmable logic device controlled via serial commands