Reasoning Today, I will be showing you the DIY PCB etching workflow used in the lab where I am working. In the post last week, I discussed the design considerations for a TB6621FNG motor control board. This post will document how the physical PCB was created. Previously, when I have wanted to produce a PCB, …
Background As part of a to-be-announced project I am working on, I ended up designing a new Toshiba TB6621FNG motor control board which is designed to be compatible with the Raspberry Pi. Before I began this design, the lab I am working in had been using controllers based on the Rohm BD6222HFP chip. This is …
It is a new year, and my dissertation has finally made it past embargoes to publication. Allow me to present: Development and Applications of Chemical Sensors for the Detection of Atmospheric Carbon Dioxide and Methane. You can view the ProQuest entry here. There is a download link to the full text at the bottom of …
Two weeks ago, I discussed the inspirations for a Greek Philospher mask. Last week, I showed how this mask was built up. This week, my Greek Philosopher mask will be completed with the addition of paint and lacquer. An Aside About Rocks The ‘stone’ surface of the Greek Philosopher mask was painted to look similar …
This is a proposal I wrote and submitted to the July 2017 cycle of the NASA NPP program to work on development of SiC logic for a Venusian satellite project.. It was rejected and I went another direction. The SiC logic proposal idea was generally well received. While many of the reviewers comments could have …
I took a lovely picture this summer of a giant robber fly eating a cicada. The picture was taken in Washington county, Oklahoma. I observed the take-down myself while working in the garage. The robber fly ambushed the cicada while it was sitting on an overhanging branch of the nearby hackberry tree. In the above …
Continuing from last week’s post, this week we will be adding labels to our MOSFET in TikZ and adding slide animations with Beamer. As a reminder, last week we drew our image of a MOSFET in Tikz before adding colors. The colors we added were based on the materials used in each part of the …
LaTeX: Drawing MOSFET in TikZ – Labels and Animation Read More »
I’m a big fan of using LaTeX for my scientific writing. (What is LaTeX? It is a typesetting programming language that gives you much more flexibility than other writing environments. wikipedia) Since I have some time on my hands, I wanted to prepare for future presentations by writing up some notes and slides using in …
In early 2014, I was inspired to make some mask art. The final piece has no proper name, but I refer to it when speaking to others as “The Witch Mask”. Work on the mask was undertaken over several months, finally completed in October 2014. This post and the related follow up posts will detail …
A while back, there was some discussion about fountain pen ink pH. During that discussion, I offered to test inks and my friend from the Geekhack forum, CPTBadass, offered to donate some samples for my tests. I received samples from my good CPT in the mail, and I went about running tests. This post is …
Fountain Pen Ink pH – A Comparison of Five Commercial Inks Read More »