https://openwrt.org/docs/guide-user/installation/generic.flashing
install 'rtl_433' and 'mosquitto'
see: https://openwrt.org/faq/how_to_install_packages
git clone https://github.com/womoak75/OpenDew
cd OpenDew
scp *.sh root@{openwrt-ip/hostname}:/usr/bin/
scp -r openwrt/etc/opendew/ root@{openwrt-ip/hostname}:/etc/
scp -r openwrt/etc/config/* root@{openwrt-ip/hostname}:/etc/config/
scp -r openwrt/etc/init.d/* root@{openwrt-ip/hostname}:/etc/init.d/