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Wiki source code of Node-RED_Install and Use

Version 37.4 by Xiaoling on 2022/07/25 15:33
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Edwin Chen 14.1 1 (% class="wikigeneratedid" id="HEndDeviceFrequencyBand" %)
Xiaoling 37.2 2 **Table of** **Contents：**
Edwin Chen 13.1 3
Edwin Chen 14.1 4 {{toc/}}
5
Herong Lu 2.1 6
Xiaoling 37.2 7
8
9 = 1.  Installation =
10
11
Herong Lu 21.1 12 Check installation instruction for different OS from this link: [[https:~~/~~/nodered.org/docs/getting-started/>>https://nodered.org/docs/getting-started/]]
Herong Lu 2.1 13
14
Edwin Chen 12.1 15
Xiaoling 37.2 16 == 1.1  Install Example for CENTOS ==
17
18
19 === 1.1.1  Installation ===
20
21
Edwin Chen 11.1 22 (% class="box infomessage" %)
23 (((
Herong Lu 21.1 24 Reference Instruction from this link:  [[https:~~/~~/github.com/node-red/linux-installers>>https://github.com/node-red/linux-installers]]
25 Run below commands and wait for installation complete.
Edwin Chen 11.1 26 )))
Herong Lu 9.1 27
Xiaoling 32.2 28 [[image:image-20220526161040-1.png]]
Herong Lu 9.1 29
30
Xiaoling 37.4 31 (% style="color:blue" %)**Verify if the installation was successful**
Herong Lu 9.1 32
Xiaoling 37.4 33 Type in the command line interface ** (% style="color:red" %)node-red(%%)**(% style="color:red" %)  
34
Herong Lu 21.1 35 The following information appears to prove that the installation has been successful
Herong Lu 9.1 36
Xiaoling 32.2 37 [[image:image-20220526161103-2.png]]
Herong Lu 9.1 38
39
Xiaoling 37.4 40
Xiaoling 37.2 41 === 1.1.2  If you want to start Node-RED as a background process ===
Herong Lu 9.1 42
Xiaoling 37.2 43
Xiaoling 37.4 44 Type in the command line interface  (% style="color:red" %)**nohup node-red &**
Herong Lu 9.1 45
Herong Lu 21.1 46 It will prompt after startup
Herong Lu 9.1 47
48 [[image:image-20220519104601-5.png]]
49
Xiaoling 37.4 50 After seeing the above information, press **enter**
Herong Lu 9.1 51
Herong Lu 21.1 52 Type in the command line  exit
Herong Lu 9.1 53
Herong Lu 21.1 54 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
Edwin Chen 12.1 55
56
Edwin Chen 15.1 57
Xiaoling 37.2 58 == 1.2  Install in Dragino Gataway ==
Edwin Chen 15.1 59
Edwin Chen 12.1 60
Xiaoling 37.2 61
62 = 2.  Use Node-RED =
63
64
65 == 2.1  Login to Node-RED interface ==
66
67
Herong Lu 21.1 68 Enter your public IP address followed by the port number 1880
Edwin Chen 12.1 69
Herong Lu 21.1 70 example：[[http:~~/~~/xxx.xx.xx.xx:1880/>>http://119.91.62.30:1880/]]
Edwin Chen 12.1 71
Herong Lu 20.2 72 [[image:image-20220519104115-4.png||height="352" width="969"]]
Edwin Chen 12.1 73
74
Edwin Chen 16.1 75
Xiaoling 37.2 76 == 2.2  Add flow ==
77
78
Herong Lu 21.1 79 Take NBSN95 mod1 UDP protocol as an example
Edwin Chen 16.1 80
Herong Lu 21.1 81 After logging into the interface click '+' to create a flow
Edwin Chen 16.1 82
Herong Lu 20.2 83 [[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"]]
Edwin Chen 16.1 84
Herong Lu 21.1 85 Rename the stream
Edwin Chen 16.1 86
Herong Lu 20.2 87 [[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"]]
Edwin Chen 16.1 88
Herong Lu 20.2 89 [[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"]]
Edwin Chen 17.1 90
Herong Lu 20.2 91 [[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"]]
Edwin Chen 17.1 92
Herong Lu 21.1 93 Drag UDP into the editing area
Edwin Chen 17.1 94
Herong Lu 20.2 95 [[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"]]
96
Herong Lu 21.1 97 The same method as above, drag and drop functions and debug into the editing area
Herong Lu 20.2 98
99 [[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"]]
100
Herong Lu 21.1 101 configure UDP in
Herong Lu 20.2 102
103 [[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"]]
104
Herong Lu 21.1 105 Write to the UDP port that the device node sends to the server
Herong Lu 20.2 106
Herong Lu 21.1 107 Example My UDP device node sends to server port 8585
108 just write 8585
Herong Lu 20.2 109
Herong Lu 21.1 110 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.
Herong Lu 20.2 111
Herong Lu 21.1 112 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.
Herong Lu 20.2 113
114 [[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"]]
115
116 [[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"]]
117
118 [[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"]]
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120 [[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"]]
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Herong Lu 21.1 122 When the node successfully sends data, the effect shown in the following figure will appear
Herong Lu 20.2 123
124 [[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"]]
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126
Xiaoling 37.2 127
128 === 2.2.1  About function ===
129
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Herong Lu 21.1 131 If you are familiar with JS code, you can write it yourself
132 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
Herong Lu 20.2 133
134 [[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"]]
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Xiaoling 37.2 138 == 2.3  Plot Chart for sensors ==
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Herong Lu 25.1 141 If you need data visualization, please refer to the following
Herong Lu 20.2 142
Xiaoling 37.2 143
Herong Lu 25.1 144 [[image:http://8.211.40.43:8080/xwiki/bin/download/Main/Node-RED/node_red%20usage%20example/WebHome/image-20220519152802-16.png?rev=1.1||alt="image-20220519152802-16.png"]]
145
146 ~1. Click Install
147 2. Search the dashboard
148 3. Click Install
149
150 [[image:http://8.211.40.43:8080/xwiki/bin/download/Main/Node-RED/node_red%20usage%20example/WebHome/image-20220519152956-17.png?rev=1.1||alt="image-20220519152956-17.png"]]
151
152 After the installation is successful, nodered will show the following node icon
153
154 [[image:http://8.211.40.43:8080/xwiki/bin/download/Main/Node-RED/node_red%20usage%20example/WebHome/image-20220519153335-19.png?rev=1.1||alt="image-20220519153335-19.png"]]
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Xiaoling 37.2 157
158 === 2.3.1  the line chart as an example ===
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Herong Lu 25.1 161 Drag the line chart to the editing area
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163 Just drag and drop as many as you need, or you can copy
164
165 The demo uses 3 kinds. Voltage, temperature, humidity
166
167 [[image:http://8.211.40.43:8080/xwiki/bin/download/Main/Node-RED/node_red%20usage%20example/WebHome/image-20220519154521-20.png?rev=1.1||alt="image-20220519154521-20.png"]]
168
169 double click function
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171 [[image:http://8.211.40.43:8080/xwiki/bin/download/Main/Node-RED/node_red%20usage%20example/WebHome/image-20220519154640-21.png?rev=1.1||alt="image-20220519154640-21.png"]]
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173 Adjusted to 3, because we need to display 3 charts
174
175 [[image:http://8.211.40.43:8080/xwiki/bin/download/Main/Node-RED/node_red%20usage%20example/WebHome/image-20220519154812-22.png?rev=1.1||alt="image-20220519154812-22.png"]]
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177
Xiaoling 37.2 178
179 === 2.3.2  the chart settings ===
180
181
Herong Lu 25.1 182 Double-click while setting up the node as above
183
184 [[image:http://8.211.40.43:8080/xwiki/bin/download/Main/Node-RED/node_red%20usage%20example/WebHome/image-20220519160314-23.png?rev=1.1||alt="image-20220519160314-23.png"]]
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186 [[image:http://8.211.40.43:8080/xwiki/bin/download/Main/Node-RED/node_red%20usage%20example/WebHome/image-20220519160412-24.png?rev=1.1||alt="image-20220519160412-24.png"]]
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188 [[image:http://8.211.40.43:8080/xwiki/bin/download/Main/Node-RED/node_red%20usage%20example/WebHome/image-20220519160759-27.png?rev=1.1||alt="image-20220519160759-27.png"]]
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190 [[image:http://8.211.40.43:8080/xwiki/bin/download/Main/Node-RED/node_red%20usage%20example/WebHome/image-20220519161326-30.png?rev=1.1||alt="image-20220519161326-30.png"]]
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192 [[image:image-20220525185746-2.png]]
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194 [[image:http://8.211.40.43:8080/xwiki/bin/download/Main/Node-RED/node_red%20usage%20example/WebHome/image-20220519161650-32.png?rev=1.1||alt="image-20220519161650-32.png"]]
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196 After the display interface is defined for the first time, subsequent charts can directly select the display interface
197
198 [[image:http://8.211.40.43:8080/xwiki/bin/download/Main/Node-RED/node_red%20usage%20example/WebHome/image-20220519162039-34.png?rev=1.1||alt="image-20220519162039-34.png"]]​​​​​​
199
200 [[image:image-20220525190106-3.png]]
201
202 Connect graph nodes to functions with lines
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204 Click to deploy
205
206 [[image:http://8.211.40.43:8080/xwiki/bin/download/Main/Node-RED/node_red%20usage%20example/WebHome/image-20220519162412-36.png?rev=1.1||alt="image-20220519162412-36.png"]]
207
208 Enter the server public IP + port 1880/ui
209
210 example：[[http:~~/~~/xxx.xx.xx.xx:1880/ui>>url:http://119.91.62.30:1880/ui/#!/18?socketid=WY1MCE0RFEKHey8KAADj]]
211
212 [[image:http://8.211.40.43:8080/xwiki/bin/download/Main/Node-RED/node_red%20usage%20example/WebHome/image-20220519163141-37.png?rev=1.1||alt="image-20220519163141-37.png"]]
213
214 At this point, the basic demonstration of nodered is completed. If you need to beautify the chart and various visualizations, you can go to the official documentation of nodered for further understanding.
215
Herong Lu 20.2 216
Xiaoling 37.2 217
218 == 2.4  Store Value ==
219
220
Herong Lu 36.1 221 Regarding storage, we recommend two ways
Herong Lu 20.2 222
Herong Lu 36.1 223
Xiaoling 37.2 224
Xiaoling 37.3 225 === 2.4.1  1. Generate txt document directly ===
Xiaoling 37.2 226
Herong Lu 36.1 227 Sample JSON file:链接转到示例JSON文件[[image:image-20220713102658-1.png]]
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229
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Xiaoling 37.3 231 === 2.4.2  2. Use sqlite database ===
Xiaoling 37.2 232
233
234 ==== **1.  Install SQLite** ====
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Herong Lu 36.1 237 [[image:image-20220713111030-2.png]]
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Xiaoling 37.2 240
241 ==== **2.  After the installation is successful, the nodes in the picture will appear** ====
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Herong Lu 36.1 244 [[image:image-20220713111200-3.png]]
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Xiaoling 37.2 248 ==== **3.  Import sample flow** ====
Herong Lu 20.2 249
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Xiaoling 37.2 251 == 2.5  Email Notification ==
Herong Lu 20.2 252
Xiaoling 37.2 253
254
255 = 3.  Input Flow =
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Herong Lu 27.1 258 Directly import JSON files to generate flow
259
260 Download the required JSON file through this link: 提供一个链接
261
Herong Lu 28.1 262 Take LHT65 as an example  (this node is already registered with TTN,MQTT protocol to connect)
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Herong Lu 27.1 264 [[image:http://8.211.40.43:8080/xwiki/bin/download/Main/Node-RED/Directly%20import%20JSON%20files%20to%20generate%20flow/WebHome/image-20220524175748-3.png?rev=1.1||alt="image-20220524175748-3.png"]]
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266 [[image:http://8.211.40.43:8080/xwiki/bin/download/Main/Node-RED/Directly%20import%20JSON%20files%20to%20generate%20flow/WebHome/image-20220524175814-4.png?rev=1.1||alt="image-20220524175814-4.png"]]
267
268 [[image:http://8.211.40.43:8080/xwiki/bin/download/Main/Node-RED/Directly%20import%20JSON%20files%20to%20generate%20flow/WebHome/image-20220524175914-5.png?rev=1.1||alt="image-20220524175914-5.png"]]
269
270 [[image:http://8.211.40.43:8080/xwiki/bin/download/Main/Node-RED/Directly%20import%20JSON%20files%20to%20generate%20flow/WebHome/image-20220524175935-6.png?rev=1.1||alt="image-20220524175935-6.png"]]
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Herong Lu 28.1 272 After the import is successful, change the MQTT in node to your TTN information
273
274 [[image:http://8.211.40.43:8080/xwiki/bin/download/Main/Node-RED/Directly%20import%20JSON%20files%20to%20generate%20flow/WebHome/image-20220524184449-1.png?rev=1.1||alt="image-20220524184449-1.png"]]
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276 [[image:http://8.211.40.43:8080/xwiki/bin/download/Main/Node-RED/Directly%20import%20JSON%20files%20to%20generate%20flow/WebHome/image-20220524184521-2.png?rev=1.1||alt="image-20220524184521-2.png"]]
277
278 Configure information consistent with your TTN
279
280 [[image:http://8.211.40.43:8080/xwiki/bin/download/Main/Node-RED/Directly%20import%20JSON%20files%20to%20generate%20flow/WebHome/image-20220524184722-3.png?rev=1.1||alt="image-20220524184722-3.png"]]
281
282 [[image:http://8.211.40.43:8080/xwiki/bin/download/Main/Node-RED/Directly%20import%20JSON%20files%20to%20generate%20flow/WebHome/image-20220524192830-4.png?rev=1.1||alt="image-20220524192830-4.png"]]
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284 API keys generated by the password for you
285
286 [[image:http://8.211.40.43:8080/xwiki/bin/download/Main/Node-RED/Directly%20import%20JSON%20files%20to%20generate%20flow/WebHome/image-20220524193028-5.png?rev=1.1||alt="image-20220524193028-5.png"]]
287
288 Topic modify it to the following format
289
Herong Lu 30.1 290 v3/(% style="color:red" %)Application ID(%%)@ttn/devices/(% style="color:red" %)End device ID(%%)/up
Herong Lu 28.1 291
292 [[image:http://8.211.40.43:8080/xwiki/bin/download/Main/Node-RED/Directly%20import%20JSON%20files%20to%20generate%20flow/WebHome/image-20220524193258-6.png?rev=1.1||alt="image-20220524193258-6.png"]]
293
294 After the modification is completed, click Deploy