A simple weather station that measures air temperature, relative humidity, and wind speed.
Temperature and humidity are measured by a low-cost sensor. Wind speed is derived from the rotational speed of a vertical wind turbine. Small blades at the base of the turbine interrupt a light beam generating pulses whose timing is measured to derive rotational speed. The turbine assembly is easy and cheap to making using a 3D printer, cardboard tube, a ceramic bearing in the shaft, and an optical sensor.
- Understanding what temperature, humidity and wind speed are
- The effects of temperature, humidity and air flow (wind) on personal comfort
- Changes in weather across the year and arising from climate change
- The construction and operation of a wind turbine