Silicon Labs Sensor Puck Enclosure

This is a case for Silicon Lab's Sensor Puck board

See [Sensor Puck](https://www.silabs.com/documents/public/user-guides/Sensor_Puck_UG.pdf)

I am using this board with my own custom firmware, normally the Puck broadcasts sensor info once per second, and the battery lasts a few days (maybe a week). My firmware modifies this to once per minute (and disables the LED after 60 seconds), so the battery lasts about 4 months (depending on how cold it is). If you are interested, I can share this fi