Skip to Content

Wiki source code of Node-RED_Install and Use

Version 37.3 by Xiaoling on 2022/07/25 15:29
Hide last authors
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
Herong Lu 21.1 30 **Verify if the installation was successful**
Herong Lu 9.1 31
Herong Lu 21.1 32 Type in the command line interface  node-red  
Herong Lu 9.1 33
Herong Lu 21.1 34 The following information appears to prove that the installation has been successful
Herong Lu 9.1 35
Xiaoling 32.2 36 [[image:image-20220526161103-2.png]]
Herong Lu 9.1 37
38
Xiaoling 37.2 39 === 1.1.2  If you want to start Node-RED as a background process ===
Herong Lu 9.1 40
Xiaoling 37.2 41
Herong Lu 21.1 42 Type in the command line interface  nohup node-red &
Herong Lu 9.1 43
Herong Lu 21.1 44 It will prompt after startup
Herong Lu 9.1 45
46 [[image:image-20220519104601-5.png]]
47
Herong Lu 21.1 48 After seeing the above information, press enter
Herong Lu 9.1 49
Herong Lu 21.1 50 Type in the command line  exit
Herong Lu 9.1 51
Herong Lu 21.1 52 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 53
54
Edwin Chen 15.1 55
Xiaoling 37.2 56 == 1.2  Install in Dragino Gataway ==
Edwin Chen 15.1 57
Edwin Chen 12.1 58
Xiaoling 37.2 59
60 = 2.  Use Node-RED =
61
62
63 == 2.1  Login to Node-RED interface ==
64
65
Herong Lu 21.1 66 Enter your public IP address followed by the port number 1880
Edwin Chen 12.1 67
Herong Lu 21.1 68 example：[[http:~~/~~/xxx.xx.xx.xx:1880/>>http://119.91.62.30:1880/]]
Edwin Chen 12.1 69
Herong Lu 20.2 70 [[image:image-20220519104115-4.png||height="352" width="969"]]
Edwin Chen 12.1 71
72
Edwin Chen 16.1 73
Xiaoling 37.2 74 == 2.2  Add flow ==
75
76
Herong Lu 21.1 77 Take NBSN95 mod1 UDP protocol as an example
Edwin Chen 16.1 78
Herong Lu 21.1 79 After logging into the interface click '+' to create a flow
Edwin Chen 16.1 80
Herong Lu 20.2 81 [[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 82
Herong Lu 21.1 83 Rename the stream
Edwin Chen 16.1 84
Herong Lu 20.2 85 [[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 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-20220519134318-3.png?rev=1.1||alt="image-20220519134318-3.png"]]
Edwin Chen 17.1 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-20220519134346-4.png?rev=1.1||alt="image-20220519134346-4.png"]]
Edwin Chen 17.1 90
Herong Lu 21.1 91 Drag UDP into the editing area
Edwin Chen 17.1 92
Herong Lu 20.2 93 [[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"]]
94
Herong Lu 21.1 95 The same method as above, drag and drop functions and debug into the editing area
Herong Lu 20.2 96
97 [[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"]]
98
Herong Lu 21.1 99 configure UDP in
Herong Lu 20.2 100
101 [[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"]]
102
Herong Lu 21.1 103 Write to the UDP port that the device node sends to the server
Herong Lu 20.2 104
Herong Lu 21.1 105 Example My UDP device node sends to server port 8585
106 just write 8585
Herong Lu 20.2 107
Herong Lu 21.1 108 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 20.2 109
Herong Lu 21.1 110 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 20.2 111
112 [[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"]]
113
114 [[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"]]
115
116 [[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"]]
117
118 [[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"]]
119
Herong Lu 21.1 120 When the node successfully sends data, the effect shown in the following figure will appear
Herong Lu 20.2 121
122 [[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"]]
123
124
Xiaoling 37.2 125
126 === 2.2.1  About function ===
127
128
Herong Lu 21.1 129 If you are familiar with JS code, you can write it yourself
130 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 20.2 131
132 [[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"]]
133
134
135
Xiaoling 37.2 136 == 2.3  Plot Chart for sensors ==
137
138
Herong Lu 25.1 139 If you need data visualization, please refer to the following
Herong Lu 20.2 140
Xiaoling 37.2 141
Herong Lu 25.1 142 [[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"]]
143
144 ~1. Click Install
145 2. Search the dashboard
146 3. Click Install
147
148 [[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"]]
149
150 After the installation is successful, nodered will show the following node icon
151
152 [[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"]]
153
154
Xiaoling 37.2 155
156 === 2.3.1  the line chart as an example ===
157
158
Herong Lu 25.1 159 Drag the line chart to the editing area
160
161 Just drag and drop as many as you need, or you can copy
162
163 The demo uses 3 kinds. Voltage, temperature, humidity
164
165 [[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"]]
166
167 double click function
168
169 [[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"]]
170
171 Adjusted to 3, because we need to display 3 charts
172
173 [[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"]]
174
175
Xiaoling 37.2 176
177 === 2.3.2  the chart settings ===
178
179
Herong Lu 25.1 180 Double-click while setting up the node as above
181
182 [[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"]]
183
184 [[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"]]
185
186 [[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"]]
187
188 [[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"]]
189
190 [[image:image-20220525185746-2.png]]
191
192 [[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"]]
193
194 After the display interface is defined for the first time, subsequent charts can directly select the display interface
195
196 [[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"]]​​​​​​
197
198 [[image:image-20220525190106-3.png]]
199
200 Connect graph nodes to functions with lines
201
202 Click to deploy
203
204 [[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"]]
205
206 Enter the server public IP + port 1880/ui
207
208 example：[[http:~~/~~/xxx.xx.xx.xx:1880/ui>>url:http://119.91.62.30:1880/ui/#!/18?socketid=WY1MCE0RFEKHey8KAADj]]
209
210 [[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"]]
211
212 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.
213
Herong Lu 20.2 214
Xiaoling 37.2 215
216 == 2.4  Store Value ==
217
218
Herong Lu 36.1 219 Regarding storage, we recommend two ways
Herong Lu 20.2 220
Herong Lu 36.1 221
Xiaoling 37.2 222
Xiaoling 37.3 223 === 2.4.1  1. Generate txt document directly ===
Xiaoling 37.2 224
Herong Lu 36.1 225 Sample JSON file:链接转到示例JSON文件[[image:image-20220713102658-1.png]]
226
227
228
Xiaoling 37.3 229 === 2.4.2  2. Use sqlite database ===
Xiaoling 37.2 230
231
232 ==== **1.  Install SQLite** ====
233
234
Herong Lu 36.1 235 [[image:image-20220713111030-2.png]]
236
237
Xiaoling 37.2 238
239 ==== **2.  After the installation is successful, the nodes in the picture will appear** ====
240
241
Herong Lu 36.1 242 [[image:image-20220713111200-3.png]]
243
244
245
Xiaoling 37.2 246 ==== **3.  Import sample flow** ====
Herong Lu 20.2 247
248
Xiaoling 37.2 249 == 2.5  Email Notification ==
Herong Lu 20.2 250
Xiaoling 37.2 251
252
253 = 3.  Input Flow =
254
255
Herong Lu 27.1 256 Directly import JSON files to generate flow
257
258 Download the required JSON file through this link: 提供一个链接
259
Herong Lu 28.1 260 Take LHT65 as an example  (this node is already registered with TTN,MQTT protocol to connect)
261
Herong Lu 27.1 262 [[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"]]
263
264 [[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"]]
265
266 [[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"]]
267
268 [[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"]]
269
Herong Lu 28.1 270 After the import is successful, change the MQTT in node to your TTN information
271
272 [[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"]]
273
274 [[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"]]
275
276 Configure information consistent with your TTN
277
278 [[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"]]
279
280 [[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"]]
281
282 API keys generated by the password for you
283
284 [[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"]]
285
286 Topic modify it to the following format
287
Herong Lu 30.1 288 v3/(% style="color:red" %)Application ID(%%)@ttn/devices/(% style="color:red" %)End device ID(%%)/up
Herong Lu 28.1 289
290 [[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"]]
291
292 After the modification is completed, click Deploy