This is the arduino code for a project that implements an HTTP-controllable power supply.
It works by turning pin 8 on when it recieves a GET request to /on.
It turns that pin off when it receives a GET request to /off.
This can be used to trip a relay which toggles a power strip.
It also sends GET requests to /heartbeat for monitoring uptime.
ip -> IP of the arduino
heartbeat_server -> IP of server to send heartbeats to
heartbeat_delay_millis -> #of millis to wait between heartbeats
LED -> number of pin to toggle