Ken Shirriff

Computer history, restoring vintage computers, IC reverse engineering, and whatever

Visit righto.com → RSS feedOn Hacker News Jul 2013 – Oct 2026

To use the Montreal subway (the Métro), you tap a paper ticket against the turnstile and it opens. The ticket works through a system called ...

A die photo of a vintage 64-bit TTL RAM chip came up on Twitter recently, but the more I examined the photo the more puzzled I became. The c...

What's inside a counterfeit Macbook charger? After my Macbook charger teardown , a reader sent me a charger he suspected was counterfeit. ...

We've been archiving a bunch of old Xerox Alto disk packs from the 1970s. A few of them turned out to be password-protected, so I needed ...

Update: It turns out my 7805 isn't counterfeit. eclectro did an in-depth search ( details on reddit ) and found an old 7805 datasheet fro...

Back in 2009 I wrote an Arduino library ( IRRemote ) to encode and decode infrared signals for remote controls. I got an email recently fr...

Thoughts on the death of Ma Ailun According to reports , a woman in China was tragically electrocuted using her iPhone while it was char...