An AWS IoT connected vest for cats with GPS and cellular capabilities. Hackster project at https://www.hackster.io/jeremywall/iot-kitteh-df0341
Here are the commands that can be sent from an MQTT client like MQTT.fx to instruct the iot-kitteh application to perform certain tasks.
{"type":"phone", "cmd":"dial", "to":"5551234567"}
{"type":"phone", "cmd":"hangup"}
{"type":"phone", "cmd":"signal"}
{"type":"phone", "cmd":"battery"}
{"type":"phone", "cmd":"sms", "to":"5551234567", "message":"hi there"}
{"type":"gps", "cmd":"on"}
{"type":"gps", "cmd":"off"}
{"type":"gps", "cmd":"power"}
{"type":"gps", "cmd":"info"}