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Wiki source code of Node-RED_Install and Use

Version 37.5 by Xiaoling on 2022/07/25 15:40
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1 (% class="wikigeneratedid" id="HEndDeviceFrequencyBand" %)
2 **Table of** **Contents：**
3
4 {{toc/}}
5
6
7
8
9 = 1.  Installation =
10
11
12 Check installation instruction for different OS from this link: [[https:~~/~~/nodered.org/docs/getting-started/>>https://nodered.org/docs/getting-started/]]
13
14
15
16 == 1.1  Install Example for CENTOS ==
17
18
19 === 1.1.1  Installation ===
20
21
22 (% class="box infomessage" %)
23 (((
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.
26 )))
27
28 [[image:image-20220526161040-1.png]]
29
30
31 (% style="color:blue" %)**Verify if the installation was successful**
32
33 Type in the command line interface ** (% style="color:red" %)node-red(%%)**(% style="color:red" %)  
34
35 The following information appears to prove that the installation has been successful
36
37 [[image:image-20220526161103-2.png]]
38
39
40
41 === 1.1.2  If you want to start Node-RED as a background process ===
42
43
44 Type in the command line interface  (% style="color:red" %)**nohup node-red &**
45
46 It will prompt after startup
47
48 [[image:image-20220519104601-5.png]]
49
50 After seeing the above information, press **enter**
51
52 Type in the command line  exit
53
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
55
56
57
58 == 1.2  Install in Dragino Gataway ==
59
60
61
62 = 2.  Use Node-RED =
63
64
65 == 2.1  Login to Node-RED interface ==
66
67
68 Enter your public IP address followed by the port number 1880
69
70 example：[[http:~~/~~/xxx.xx.xx.xx:1880/>>http://119.91.62.30:1880/]]
71
72 [[image:image-20220519104115-4.png||height="352" width="969"]]
73
74
75
76 == 2.2  Add flow ==
77
78
79 Take NBSN95 mod1 UDP protocol as an example
80
81 After logging into the interface click** (% style="color:red" %)"+" (%%)**to create a flow
82
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"]]
84
85
86
87 Rename the stream
88
89 [[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"]]
90
91 [[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"]]
92
93 [[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"]]
94
95 Drag UDP into the editing area
96
97
98
99 [[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"]]
100
101
102 The same method as above, drag and drop functions and debug into the editing area
103
104 [[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"]]
105
106
107
108 configure UDP in
109
110 [[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"]]
111
112
113 Write to the UDP port that the device node sends to the server
114
115 Example My UDP device node sends to server port 8585
116 just write 8585
117
118
119 (% style="color:red" %)**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.**
120
121
122 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.
123
124 [[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"]]
125
126
127 [[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"]]
128
129
130 [[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"]]
131
132
133 [[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"]]
134
135
136
137 When the node successfully sends data, the effect shown in the following figure will appear
138
139 [[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"]]
140
141
142
143 === 2.2.1  About function ===
144
145
146 If you are familiar with JS code, you can write it yourself
147 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
148
149 [[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"]]
150
151
152
153 == 2.3  Plot Chart for sensors ==
154
155
156 If you need data visualization, please refer to the following
157
158
159 [[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"]]
160
161 ~1. Click Install
162 2. Search the dashboard
163 3. Click Install
164
165 [[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"]]
166
167 After the installation is successful, nodered will show the following node icon
168
169 [[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"]]
170
171
172
173 === 2.3.1  the line chart as an example ===
174
175
176 Drag the line chart to the editing area
177
178 Just drag and drop as many as you need, or you can copy
179
180 The demo uses 3 kinds. Voltage, temperature, humidity
181
182 [[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"]]
183
184 double click function
185
186 [[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"]]
187
188 Adjusted to 3, because we need to display 3 charts
189
190 [[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"]]
191
192
193
194 === 2.3.2  the chart settings ===
195
196
197 Double-click while setting up the node as above
198
199 [[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"]]
200
201 [[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"]]
202
203 [[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"]]
204
205 [[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"]]
206
207 [[image:image-20220525185746-2.png]]
208
209 [[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"]]
210
211 After the display interface is defined for the first time, subsequent charts can directly select the display interface
212
213 [[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"]]​​​​​​
214
215 [[image:image-20220525190106-3.png]]
216
217 Connect graph nodes to functions with lines
218
219 Click to deploy
220
221 [[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"]]
222
223 Enter the server public IP + port 1880/ui
224
225 example：[[http:~~/~~/xxx.xx.xx.xx:1880/ui>>url:http://119.91.62.30:1880/ui/#!/18?socketid=WY1MCE0RFEKHey8KAADj]]
226
227 [[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"]]
228
229 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.
230
231
232
233 == 2.4  Store Value ==
234
235
236 Regarding storage, we recommend two ways
237
238
239
240 === 2.4.1  1. Generate txt document directly ===
241
242 Sample JSON file:链接转到示例JSON文件[[image:image-20220713102658-1.png]]
243
244
245
246 === 2.4.2  2. Use sqlite database ===
247
248
249 ==== **1.  Install SQLite** ====
250
251
252 [[image:image-20220713111030-2.png]]
253
254
255
256 ==== **2.  After the installation is successful, the nodes in the picture will appear** ====
257
258
259 [[image:image-20220713111200-3.png]]
260
261
262
263 ==== **3.  Import sample flow** ====
264
265
266 == 2.5  Email Notification ==
267
268
269
270 = 3.  Input Flow =
271
272
273 Directly import JSON files to generate flow
274
275 Download the required JSON file through this link: 提供一个链接
276
277 Take LHT65 as an example  (this node is already registered with TTN,MQTT protocol to connect)
278
279 [[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"]]
280
281 [[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"]]
282
283 [[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"]]
284
285 [[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"]]
286
287 After the import is successful, change the MQTT in node to your TTN information
288
289 [[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"]]
290
291 [[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"]]
292
293 Configure information consistent with your TTN
294
295 [[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"]]
296
297 [[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"]]
298
299 API keys generated by the password for you
300
301 [[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"]]
302
303 Topic modify it to the following format
304
305 v3/(% style="color:red" %)Application ID(%%)@ttn/devices/(% style="color:red" %)End device ID(%%)/up
306
307 [[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"]]
308
309 After the modification is completed, click Deploy