Today, one of my personal goals was realized. I made a small contribution to a large open-source project. The project is the Arduino core for the ESP8266. The ESP8266 is my workhorse microcontroller, but the Arduino core provides a framework to quickly develop software. It contains numerous features that are based on the Arduino platform but adapted for the ESP8266.
The recent modifications to the cabinet warranted a small software upgrade. The power and heat transfer of the two modes are drastically different. The heating side, a SSR-throttled in-line water heater element, can increase the temperature of the fluid much faster than the thermoelectric chips I was using previously. The cooling side, a copper coil sitting inside the refrigerator, is much slower; in fact, it