This is a DIY temperature-averaging thermometer project, which will most likely find it’s way into one of my HVAC-R projects, or a weather station.
It takes a temperature reading every second and calculates an hourly average. It utilizes a Silicon Labs EFM32 Wonder Gecko (EFM32WG990) microcontroller kit, and is powered by a single lithium-ion 18650 battery.
This project is still in an early stage of development, and more updates (as well as videos) will follow.
Updates
- I upgraded the battery to a Panasonic NCR18650B. The battery life is now 46 hours per charge.
This is a modification of Silicon Labs’ temperature sensing demo. I only modified the main file — ‘inttemp.c’.