2024年1月29日 星期一

Node-Red MQTT基本實驗

 Node-Red MQTT基本實驗













ON Bouuton 節點

Payload : on

OFF Bouuton 節點

Payload : off

MQTT out節點

Server :broker.hivemq.com : 1883

Qos=1  保留

發行主題 : alex9ufo/node-red/out

MQTT in節點

Server :broker.hivemq.com : 1883

Qos=1  保留

發行主題 : alex9ufo/node-red/out

Audio Out 節點

1.     Microsoft Yatinf—Chinese

Function 節點

var onoff=msg.payload;

 

if (onoff=="on")

{

    msg.payload=true;

}

if (onoff=="off")

{

    msg.payload=false;

return msg;

勤益科大 Bouuton 節點

Payload :  勤益科大

Hello  Bouuton 節點

Payload :  hello

MQTT out節點

Server :broker.hivemq.com : 1883

Qos=1  保留

發行主題 :  alex9ufo/esp32/hello

MQTT in節點

Server :broker.hivemq.com : 1883

Qos=1  保留

發行主題 : alex9ufo/esp32/hello

Text 節點

Label : 訂閱主題 :

Value format{{msg.payload}}

Layout: 上中

 

Node-Red程式

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