A simulator for simulating things
The simulated telemetry updates are formatted as:
The message data is provided in JSON format on a single line.
Message Char: 't'
The telemetry update data consists of a JSON-formatted set of sensor values and a current timestamp.
Note that the time_ms is always required.
{ "time_ms" : 5, "altitude" : 4234 }
Message Char: 'q'
Pretty obvious... quits the simulation