https://www.berrylan.org/faq.html echo "deb http://repository.nymea.io buster rpi" | sudo tee /etc/apt/sources.list.d/nymea.list sudo apt-key adv --keyserver keyserver.ubuntu.com --recv-key A1A19ED6 sudo apt-get update sudo apt-get install nymea-networkmanager dirmngr sudo systemctl disable dhcpcd reboot # to connect and test without making it impossible to connect back to you pi if you're using an existing wifi connection systemctl stop dhcpcd && systemctl restart NetworkManager && systemctl restart nymea-networkmanager # Once you've connected and tested sudo systemctl disable dhcpcd sudo systemctl enable nymea-networkmanager.service