We are going to need the Rpi-rf package installed with sudo pip3 install rpi-rf. ![]() We will also require the pip package manager, apt-get install python3-pip. I recommend setting a DHCP reservation on your router so that this IP doesn't change over time.īefore installing the packages required for this project I strongly recommend running sudo apt-get update and sudo apt-get upgrade to ensure your Pi firmware is up to date. Check the IP address of the Pi by logging in manually and running hostname -I which returns 192.168.0.21 in my case. ![]() I SSH into my Pi and use Samba (described later) to access the Pi file structure. If you get warnings about permissions, add sudo before any command. I will assume that you are comfortable with the Terminal on your Pi, and highlighted text corresponds to commands entered at the Terminal. Assuming you are using an 'official' Raspberry Pi camera, follow the setup instructions here. Luckily RF transmitter/receiver pairs are incredibly cheap, and I paid just over a pound for mine, including shipping! Rpi-rf explains the wiring to the Pi GPIO.įor the Pi camera, a wide range of options are available, and a old webcam could be used. Raspberry Pis have WiFi and Bluetooth antennas built-in, but not 433 MHz RF. However, if you already have a wireless doorbell bought in the EU/USA, chances are you can use it. ![]() So be warned, some experimentation may be required unless you go for a device with known compatibility with Rpi-rf. I have subsequently bought RF devices that were not compatible with Rpi-rf, and I am not sure if this is because they used a custom pulse encoding (to avoid interference) or chipset. Perhaps I got a bit lucky, since my doorbell was compatible with the Python module Rpi-rf that I used to interpret intercepted RF signals.
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