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Making a USB Business Card

May 25, 2020

 I've been kicking around the idea of designing and etching a USB business card.  USB business cards have been around for a few years and there is a few designs and software options to choose.  My plan is to use an Atmel microcontroller to open a browser and direct them to my website.  There is a few issues with this idea as Windows doesn't like to execute code from USB since this could circumvent security.  But, I am not at this stage and will tackle that later on.

 I have started designing the schematic and there is nothing exciting about the design.  It's just a minimal microcontroller circuit, but may add some LEDs for show.  I chose the ATTiny85 as it's common with loads of firmware examples.