Part 1. Plug N Stream Sensors

This project will use the Grove Temperature/Humidity Sensor Pro (DHT22) which costs $15. This is the temperature sensor of choice if you want accuracy (0.3°C accuracy). If accuracy just isn't your thing, the non-pro version (DHT11) will save you $9. These sensors have a digital interface. You want to make sure any Grove sensor you use with a digital interface has solid software support for your platform of choice. More on that in the software setup section.

The $10 Grove Air Quality Sensor detects several different types of gases including carbon monoxide. This sensor has an analog interface and will be very simple to read in software. We just need to know how to translate the returned numbers. Luckily, Seeed provides great documentation for this sensor here.

There is quite a large library of other Grove devices and sensors that we can use. This is one of the benefits of the GrovePi Zero - a seemingly infinite number of device combinations.

The hardware setup for our sensors is about as easy as it gets. Plug the temperature sensor into the D3 port and the air quality sensor into the A0 port.

<< Part 1: Hardware Requirements - Part 2: GrovePi Zero Software >>