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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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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 '+' 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 Rename the stream
86
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"]]
88
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"]]
90
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"]]
92
93 Drag UDP into the editing area
94
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
97 The same method as above, drag and drop functions and debug into the editing area
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
101 configure UDP in
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
105 Write to the UDP port that the device node sends to the server
106
107 Example My UDP device node sends to server port 8585
108 just write 8585
109
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.
111
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.
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"]]
119
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"]]
121
122 When the node successfully sends data, the effect shown in the following figure will appear
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"]]
125
126
127
128 === 2.2.1  About function ===
129
130
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
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"]]
135
136
137
138 == 2.3  Plot Chart for sensors ==
139
140
141 If you need data visualization, please refer to the following
142
143
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"]]
155
156
157
158 === 2.3.1  the line chart as an example ===
159
160
161 Drag the line chart to the editing area
162
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
170
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"]]
172
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"]]
176
177
178
179 === 2.3.2  the chart settings ===
180
181
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"]]
185
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"]]
187
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"]]
189
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"]]
191
192 [[image:image-20220525185746-2.png]]
193
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"]]
195
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
203
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
216
217
218 == 2.4  Store Value ==
219
220
221 Regarding storage, we recommend two ways
222
223
224
225 === 2.4.1  1. Generate txt document directly ===
226
227 Sample JSON file:链接转到示例JSON文件[[image:image-20220713102658-1.png]]
228
229
230
231 === 2.4.2  2. Use sqlite database ===
232
233
234 ==== **1.  Install SQLite** ====
235
236
237 [[image:image-20220713111030-2.png]]
238
239
240
241 ==== **2.  After the installation is successful, the nodes in the picture will appear** ====
242
243
244 [[image:image-20220713111200-3.png]]
245
246
247
248 ==== **3.  Import sample flow** ====
249
250
251 == 2.5  Email Notification ==
252
253
254
255 = 3.  Input Flow =
256
257
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
262 Take LHT65 as an example  (this node is already registered with TTN,MQTT protocol to connect)
263
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"]]
265
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"]]
271
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"]]
275
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"]]
283
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
290 v3/(% style="color:red" %)Application ID(%%)@ttn/devices/(% style="color:red" %)End device ID(%%)/up
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