The requests for the ESP8266 code and you need to subscribe to topics:
/<TOPIC>/plug/command or <TOPIC>/plug/command
In this case you connect the ESP directly to iotcentral.eu.
The required message to be received by the ESP8266 in order to trigger its GPIO 12 is:
{"device_name":"ESP_3A9108", "type":"plug", "state":1}
Here:
- Device_name: Is the device's name that we want to trigger.
- Type: Is the type of device. In this case it is plug.
- State: Is the desired state of the GPIO 12. In this case, we want to change the state to ON.
/<TOPIC> /status/update or <TOPIC>/status/update
In this case, there is direct connection to iotcentral.eu without a local broker. Receiving any message on this topic will trigger ESP8266 ...