树莓派3bNodereddashboard第一个测试程序

代码:

[{"id": "15d4e229.de9d2e","type": "function","z": "e3aca2b9.00ea7","name": "temperature","func": "str=msg.payload;\nmsg.payload=str.substring(5,9);\nreturn msg;","outputs": 1,"noerr": 0,"x": 470,"y": 296.5,"wires": [["7a0ba386.d5fc24"]]
}, {"id": "7a0ba386.d5fc24","type": "ui_gauge","z": "e3aca2b9.00ea7","name": "","group": "d6ccf1c9.b74398","order": 0,"width": 0,"height": 0,"gtype": "gage","title": "CPU. Temp","label": "℃","format": "{{value}}","min": 0,"max": "80","colors": ["#00b500", "#e6e600", "#ca3838"],"seg1": "","seg2": "","x": 679,"y": 333.5,"wires": []
}, {"id": "bf50d228.72e178","type": "inject","z": "e3aca2b9.00ea7","name": "","topic": "","payload": "","payloadType": "date","repeat": "1","crontab": "","once": false,"onceDelay": 0.1,"x": 104,"y": 305.5,"wires": [["db3ed94d.c4bdb"]]
}, {"id": "db3ed94d.c4bdb","type": "exec","z": "e3aca2b9.00ea7","command": "vcgencmd measure_temp","addpay": false,"append": "","useSpawn": "false","timer": "","oldrc": false,"name": "temp","x": 255,"y": 312,"wires": [["15d4e229.de9d2e"],[],[]]
}, {"id": "d6ccf1c9.b74398","type": "ui_group","z": "","name": "tem","tab": "8d45c1ce.10593","disp": true,"width": "6","collapse": false
}, {"id": "8d45c1ce.10593","type": "ui_tab","z": "","name": "Temp","icon": "dashboard"
}]

导入代码过程:

浏览器输入:http://172.16.0.12:1880

IP请根据你自己服务器的IP填写

点击node-red页面右上菜单(红色圈圈),如图:

在弹出的菜单中选择"导入"

粘贴本文上面的代码到下图红框处

粘贴好后点击页面右下角的"导入"按钮即可生成如下"流程图"

在chrome浏览器新建标签页,然后地址栏输入

http://172.16.0.12:1880/ui

显示效果如图

程序保存就是"导出" .

本文程序参考了https://blog.csdn.net/hu5566798/article/details/81058485的代码,在此表示感谢!