Here are some projects that I have worked on or am working on.
For my CMOS design/fabrication course, one of the major projects was the design, fabrication, and testing of a CMOS op-amp implemented in silicon-on-insulator (SOI). My design differed from the common two stage op-amp since it used an indirect compensation method rather than traditional Miller compensation.
LoRa Tracking Device/Data Logger (December 2016 – Present)
After reading about various projects involving data logging and RF, I became interested in building such a device myself. Usually these use a cellular link, but I wanted something simpler. I stumbled upon LoRa modulation, which allows transceivers with very high sensisitivity in exchange for a low bitrate. It can work in the ISM band at 915 MHz which doesn’t require licensing. This sounded perfect, so I decided to order some development boards. Look for some upcoming blog posts!
Lab Power Supply (July 2016 – Present)
When I started this project, I did not have any general purpose lab power supplies at home, so I set out with the goal of building one. This is an ongoing project; see the following posts:
For one of my analog electronics courses (ELEC 3509 at Carleton University), one of the lab projects was the design of a cascode amplifier. This is a 2-transistor circuit that has an improved frequency response from the common emitter amplifier since it overcomes the Miller effect.
For my first-year “Introduction to Engineering” course, I was tasked with the redesign of a simple mechanical component. As a past Scout and backcountry camper, one thing that I thought could be improved is the humble tent peg that is used to prevent a camping tent from shifting around during the night (or blowing away if it’s windy!). This project involved modelling the improved design in parametric CAD software (PTC Creo) and producing a 3D-printed prototype.