Blog Posts

Curve Tracing with an Oscilloscope – part 1 (2 terminal devices)

Introduction A basic check of whether or not a diode is “good” can be done simply using a multimeter. Many multimeters today consist of a “diode check” function which will give (roughly) the turn-on voltage of the diode. Alternatively, the resistance measurement mode can be used to check for some measurable resistance in the forward-bias mode and an “over range” in reverse-bias mode. For more accurate or more detailed results, it can be useful to view the diode’s current to (more)

Continue Reading

PSoC POGO Programming Adapter

When I was doing a lot of AVR Programming, I had a few ISP pogo pin programming adapters (example #1, example #2) that made programming very quick and easy without using a dedicated connector on the target PCB. I’ve being using the Cypress PSOC microcontrollers with the MiniProg3 programmer and wanted a simple POGO pin adapter that I could use with it. I didn’t find any that were currently being sold, so I decided to make my own. Honestly, I (more)

Continue Reading logo

Since I started doing more projects with SMD components over the past 4 years or so, my personal parts collection has really started to become unorganized. I purchased a couple of Box-All storage containers from AideTek to physically store components, and they have proven to be very good! However, I really didn’t have a good method for keeping track of what components I actually had in inventory. This led to buying components I already had when I started new projects. (more)

Continue Reading

Re-evaluating PCB Design Software

In the past, I’ve done much of my PCB design in KiCAD, Eagle, or DipTrace. While KiCAD is a nice Open Source package (and was great to use when I was teaching), I’ve become somewhat tired of it’s awkward interface and clunky workflow when going from schematic to PCB layout. I recognize that KiCAD improvements are coming rapidly, and I’m really excited to see where the development efforts take it. However, I spent some time in the past year to (more)

Continue Reading


Nixie clocks have been all the rage in the electronics hobby for the past several years. I had a student, Jordan Easter, design and make one when I was teaching at Surry Community College, and it turned out great. (He did it all using perf board, Yikes!) It had been on my to-do list for some time to make one myself, but it seemed I could never find the time to get around to it even though I had already (more)

Continue Reading

OtolithSound Project

When I was teaching, I had a friend of mine ask me if I could review a grant proposal that his startup company (OtolithLabs) had written. In the proposal, they discussed a new device that would help with motion sickness by applying low frequency audio (or even sub audible frequencies) behind the subject’s ear. In the proposal, they had piecemealed a couple of Adafruit boards together to demonstrate feasibility for their new device. What they needed was an electrical engineer (more)

Continue Reading

Site Footer

Sliding Sidebar

About Me

About Me

I work in the semiconductor manufacturing industry by day, and I enjoy working on electronics projects by night. I started this blog so that I could document the projects I'm working on and hopefully share useful info to those who have the same interest.

Social Profiles