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Wiki source code of Node-RED_Install and Use

Version 22.1 by Herong Lu on 2022/05/25 18:56
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1 (% class="wikigeneratedid" id="HEndDeviceFrequencyBand" %)
2 **Contents：**
3
4 {{toc/}}
5
6 = Installation =
7
8 Check installation instruction for different OS from this link: [[https:~~/~~/nodered.org/docs/getting-started/>>https://nodered.org/docs/getting-started/]]
9
10 == Install Example for CENTOS ==
11
12 === Installation ===
13
14 (% class="box infomessage" %)
15 (((
16 Reference Instruction from this link:  [[https:~~/~~/github.com/node-red/linux-installers>>https://github.com/node-red/linux-installers]]
17 Run below commands and wait for installation complete.
18 )))
19
20 [[image:image-20220519102228-2.png]]
21
22 **Verify if the installation was successful**
23
24 Type in the command line interface  node-red  
25
26 The following information appears to prove that the installation has been successful
27
28 [[image:image-20220519103318-3.png]]
29
30
31 === If you want to start Node-RED as a background process ===
32
33 Type in the command line interface  nohup node-red &
34
35 It will prompt after startup
36
37 [[image:image-20220519104601-5.png]]
38
39 After seeing the above information, press enter
40
41 Type in the command line  exit
42
43 The above is the installation and startup process of nodered. If you don't understand anything, you can go to the nodered official website. There are installation instructions for various systems. The address has a link at the top
44
45 == Install in Dragino Gataway ==
46
47
48 = Use Node-RED =
49
50 == Login to Node-RED interface ==
51
52 Enter your public IP address followed by the port number 1880
53
54 example：[[http:~~/~~/xxx.xx.xx.xx:1880/>>http://119.91.62.30:1880/]]
55
56 [[image:image-20220519104115-4.png||height="352" width="969"]]
57
58
59 == Add flow ==
60
61 Take NBSN95 mod1 UDP protocol as an example
62
63 After logging into the interface click '+' to create a flow
64
65 [[image:http://8.211.40.43:8080/xwiki/bin/download/Main/Node-RED/node_red%20usage%20example/WebHome/image-20220519133634-1.png?rev=1.1||alt="image-20220519133634-1.png" height="231" width="972"]]
66
67 Rename the stream
68
69 [[image:http://8.211.40.43:8080/xwiki/bin/download/Main/Node-RED/node_red%20usage%20example/WebHome/image-20220519134042-2.png?rev=1.1||alt="image-20220519134042-2.png" height="552" width="565"]]
70
71 [[image:http://8.211.40.43:8080/xwiki/bin/download/Main/Node-RED/node_red%20usage%20example/WebHome/image-20220519134318-3.png?rev=1.1||alt="image-20220519134318-3.png"]]
72
73 [[image:http://8.211.40.43:8080/xwiki/bin/download/Main/Node-RED/node_red%20usage%20example/WebHome/image-20220519134346-4.png?rev=1.1||alt="image-20220519134346-4.png"]]
74
75 Drag UDP into the editing area
76
77 [[image:http://8.211.40.43:8080/xwiki/bin/download/Main/Node-RED/node_red%20usage%20example/WebHome/image-20220519134533-5.png?rev=1.1||alt="image-20220519134533-5.png"]]
78
79 The same method as above, drag and drop functions and debug into the editing area
80
81 [[image:http://8.211.40.43:8080/xwiki/bin/download/Main/Node-RED/node_red%20usage%20example/WebHome/image-20220519134850-6.png?rev=1.1||alt="image-20220519134850-6.png"]]
82
83 configure UDP in
84
85 [[image:http://8.211.40.43:8080/xwiki/bin/download/Main/Node-RED/node_red%20usage%20example/WebHome/image-20220519135402-7.png?rev=1.1||alt="image-20220519135402-7.png"]]
86
87 Write to the UDP port that the device node sends to the server
88
89 Example My UDP device node sends to server port 8585
90 just write 8585
91
92 Note that the port that is already in use cannot be used. If the receiving fails, you need to check whether the port of the server is occupied. The sending port of the device node should not use the default port used by the server, such as a common port such as 8080.
93
94 In order to avoid data confusion, different types of nodes do not use the same UDP port, because different nodes have different data formats and different functions.
95
96 [[image:http://8.211.40.43:8080/xwiki/bin/download/Main/Node-RED/node_red%20usage%20example/WebHome/image-20220519135915-8.png?rev=1.1||alt="image-20220519135915-8.png"]]
97
98 [[image:http://8.211.40.43:8080/xwiki/bin/download/Main/Node-RED/node_red%20usage%20example/WebHome/image-20220519144651-14.png?rev=1.1||alt="image-20220519144651-14.png"]]
99
100 [[image:http://8.211.40.43:8080/xwiki/bin/download/Main/Node-RED/node_red%20usage%20example/WebHome/image-20220519141355-11.png?rev=1.1||alt="image-20220519141355-11.png"]]
101
102 [[image:http://8.211.40.43:8080/xwiki/bin/download/Main/Node-RED/node_red%20usage%20example/WebHome/image-20220519141704-12.png?rev=1.1||alt="image-20220519141704-12.png"]]
103
104 When the node successfully sends data, the effect shown in the following figure will appear
105
106 [[image:http://8.211.40.43:8080/xwiki/bin/download/Main/Node-RED/node_red%20usage%20example/WebHome/image-20220519150455-15.png?rev=1.1||alt="image-20220519150455-15.png"]]
107
108 === About function ===
109
110 If you are familiar with JS code, you can write it yourself
111 If you are not familiar, we have the JS code for each type of node, you just need to copy and paste it into it
112
113 [[image:http://8.211.40.43:8080/xwiki/bin/download/Main/Node-RED/node_red%20usage%20example/WebHome/image-20220519141833-13.png?rev=1.1||alt="image-20220519141833-13.png"]]
114
115
116 == Plot Chart for sensors ==
117
118
119 == Store Value ==
120
121
122 == Email Notification ==
123
124
125 = Input Flow =
126
127 == MQTT ==
128
129 == UDP ==
130
131 == TCP ==
132
133 == Get data from LoRaWAN Server (TTN) ==
134
135
136 = Example =