Powering a Ham Radio with USB Power Delivery

A while back, I built a cable to power 12V devices (in my case a Kenwood TH-D74 HT) using the QuickCharge standard available in some USB power adapters. This allowed me to use a USB charger to charge my HT rather than bringing a dedicated wall wart which helped save...

VUCC Circle Checker Script

8/22/2025 UPDATE: I have had some discussions with ARRL about this rule for VUCC. In short, the intent of the rule is a 200km diameter circle enclosing all locations used toward VUCC rather than no two locations being farther than 200km apart. It is possible to meet...

Raspberry Pi METAR Ticker Display

When I was still in graduate school a few years ago, my office was in the center of a building which meant no windows and no way to quickly see the weather outside. This motivated me to make a project that would display the current weather on my desk. Being a pilot, I...

Arduino-Based Intervalometer for DSLR

I originally made this intervalometer to photograph the 2017 total solar eclipse. I wanted to make a portable and simple intervalometer out of parts I had laying around. I had a small enclosure with a front panel cut out for a keypad, LED, and switch from an old...