In our house, lights are behind latching switches. Then, any button in the house can change the state of any lights, but a microcontroller can do the same! A Controllino is positionned as inputs of the latching switches, just like regular buttons.
The lights.ino Arduino program lands in the Controllino. It sets up
a TCP server and a specific but very basic binary protocol to control
the lights. It assumes the Controllino is wired by RJ45 to a router
with a DHCP server. Thus, the Controllino IP is assigned dynamically
by DHCP. The lights.ino program uses the
Telnet port (23) to receive
data (because why not 🤷♂️).
Example of raw usage with netcat:
$ printf '%b\t%b' '\x05' '\x00' | nc 192.168.1.42 23 -v
# ^~~~ ^~~~ ^~~~~~~~~~~~ ^~
# | | | |
# | | | the port
# | | the IP of the Controllino
# | the action
# the subjectHopefully, there is a Rust program to
control the lights! Please, welcome lights. Here is a basic usage, but check
its documentation to learn more.
$ lights --address 192.168.1.42:23 --subject livingroom