I needed to create a small, cheap USB-enabled circuit to serve as a key logger, and I’ve found some nice projects online that explain how to do this.
I found out you could use an ATTiny85 to run the V-USB software USB stack, and I only needed the one input pin to gather data (it’s going to be a USB “That was easy” button).
Since this was done so many times before, I will be brief, and try to point out problems I had instead of a regular tutorial.
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