Daniel Johnson's personal fragment of the web

Posts tagged "electronics"

"LEG Processor for Education" at EWME 2016

Last semester, I was part of the Clay Wolkin Fellowship at Harvey Mudd. The fellowship consists of a group of students (mostly Engineering majors, but some CS also) who work on interesting electrical-engineering-focused projects. The project I worked on was the “LEG Processor”, an open-source pipelined processor that implements the ARMv5 instruction set and can boot the Linux kernel (3.19) in simulation. We recently published a paper describing our work in the European Workshop for Microelectronics! You can read the paper here. Or read on for a high-level overview of the work I did on the project.


Whiteboard Drawing Bot – Part 1

For the last couple of weeks, I have been working on creating a "whiteboard drawing bot", a Raspberry-Pi-powered contraption that can draw shapes and text on a whiteboard. After four redesigns and about a thousand lines of code, I'm finally finished. Tada!

Anyways, now that I have finished building it, I am going to write a bit about how I did so in a few posts. For this first post, I'm going to be talking about the hardware behind the bot and a little bit of the software on the Raspberry Pi. Then, later, I'll talk about the custom software I wrote to translate shapes and lines into commands for the Pi.


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