#+TITLE: Weather Station

The goal of this project is to produce a cheap and reasonably robust
weather station with low energy usage that can be deployed far from
any kind of power or network infrastructure.

* Design
** Infrastructure
*** Data storage
	Removable storage device that can be routinely retrieved and
	swapped out.  An SD card seems to be the best choice.

*** Power supply
	A pack of rechargable batteries is the simplest solution.

** Metrics
*** Temperature & Humidity
	Off-the-shelf temperature and humidity sensor.

*** Insolation
	Off-the-shelf ambient light sensor.

*** Pressure
	Off-the-shelf barometer.  [[https://uk.rs-online.com/web/p/pressure-sensor-ics/1361511][DPS310]] seems to fit the bill.

*** Wind speed
	3D printed cup anemometer using a permanent magnet and a hall
	effect sensor.

*** Wind direction
	3D printed wind vane with a permanent magnet on the axis and a
	angular position sensor.