Hardware and software requirements

We have already discussed most of the requirements for this project in the first chapter of this book. Here, you will simply need an additional component: a DHT11 sensor (https://www.adafruit.com/products/386). The following image shows the sensor:

You can of course use other similar sensors, for example the DHT22, which is more precise. To use a DHT22, you will only need to change one thing inside the code we'll see later.

You will also need a 4.7k Ohm resistor to make the sensor work, as well as jumper wires and a breadboard.

Hardware configuration

Let's now look at how to configure the hardware for this project; basically, how to connect the sensor to the Pi Zero board.

The following figure is a schematic to help you out:

As it's the first project we are actually building using the Raspberry Pi Zero, there is something important I wanted to point out here. To connect the board to components like this sensor here, we have two options. You can either use jumper...