Yes, you can do POST requests. I usually use a protocol called MQTT, originally developed for industrial pipeline telemetry and controls that's now getting a lot of use in the IoT world. Good luck, this stuff is super fun.
What I have to figure out forexample how to power this thing with semi-prolonged burst say through a cap. I was looking at the specs briefly it's like below 300mA but 3. Something volts for "load draw"
