Monthly Archives: August 2021

The Scramblepad Hardware and Protocol

I first saw a Scramblepad on the door of an office building I worked at while in high school in the late ’80s. I always wanted to own one or to make my own based on seven-segment LED displays but … Continue reading

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Building a Simple RFID Door Access Controller

In this project, I build what is quite possibly the world’s simplest (and least intelligent) door access controller to let me open and close my garage door using my mountain bike helmet. We’ll take a look at my motivation for … Continue reading

Posted in Microchip, PIC18, Uncategorized | Comments Off on Building a Simple RFID Door Access Controller