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MqttReceive_v2 Op

Ops.Net.Mqtt.MqttReceive_v2


MqttReceive
Namespace: Ops.Net.Mqtt

Op author: tim

Uses spanbrary: websocket to mqtt (Use WebSockets to connect to an MQTT Broker)

Receives a message via MQTT (IoT, subscribe, listen)


summary (oneliner)

Subscribes to a MQTT channel and receives data from it. Every time there is a new message, the output port Message will change. Needs to be connected to Ops.Net.Mqtt.Mqtt.



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Inputs

MQTT Object (Object)

Internally used in cables for inter-op-communication


Channel (String)

The channel you want to subscribe and receive data from, e.g. /data/sensor1/x


Outputs

MQTT Object - Out (Object)

Message String (String)

Message Float (Number)

Message Boolean (boolean Number)

Topic (String)

Currently the same as the input port Channel. In MQTT you could also subscribe via wildcards, e.g. /sensor1/#, this will subscribe to /sensor1/x as well as /sensor1/y. Currently not supported…


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MQTT Send and Receive Example

Sends a random value via MQTT to the public MQTT-broker shiftr.io and in the same time listens for changes on that channel /cablestest. MQTT is a great lightweight protocol to send values from one device to another, e.g. you could connect your Arduino with a cables-patch.
If you visit shiftr.io/try#terminal you can view the information being sent.

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Examples using MqttReceive_v2 ()

Public Patches using MqttReceive_v2 ()