Environment sensors
How does our garden grow? With Raspberry Pis all in a row.
YOU’LL NEED
• Raspberry Pi (anymodel)
• GrovePi or Grove Pi Zero
• Adafruit 1.3-inch Bonnet (or other display)
• GrovePi Sensors (temperature, moisture, light)
Stack the display on the GrovePi daughterboard, plug in sensors and you’ll never have dry peonies again.
© TOM’S HARDWARE
WITH MORE EXTREME WEATHER conditions predicted in the future, the green-fingered amongst us may need to keep a closer eye on their plants. Temperature is one variable that can be displayed and graphed by a Pi with an LCD display, so for this project, we’ll take that idea a step further by measuring a range of environmental variables. Thermistors and most other components that measure such factors, are analog in nature, so they aren’t 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 analog sensors. We used a high accuracy temperature and humidity sensor, a soil moisture meter, a light sensor, but more are available and getting them working with GrovePi is super easy.