Raspberry Pi projects
Environment sensors
With sensors and data and neat tidy cables, that’s how our garden grows.
Last issue’s monitoring feature showed how your PC’s CPU temperature could be displayed and graphed by a Pi with an LCD display. For this project we’ll take that idea a step further, and measure a range of environmental variables. Thermistors and most other components that measure such factors, are analogue in nature. So they’re not immediately suitable for the Pi, which only has digital (GPIO) inputs. However, thanks to HATs like the GrovePi, it’s easy to get your Pi talking to analogue sensors. We used a high accuracy temperature and humidity sensor, a soil moisture meter, a light sensor, but much more are available and getting them working with GrovePi is super easy.