Changes for page Node-RED_Install and Use

Last modified by Mengting Qiu on 2024/11/29 10:15
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From version < 40.1 >
edited by Edwin Chen
on 2022/09/02 15:24
To version < 18.1 >
edited by Edwin Chen
on 2022/05/25 15:37
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1 1  (% class="wikigeneratedid" id="HEndDeviceFrequencyBand" %)
2 - **Table of** **Contents：**
2 + **Contents：**
3 3  
4 4  {{toc/}}
5 5  
6 += Installation =
6 6  
7 -
8 -
9 -= 1.  Installation =
10 -
11 -
12 12  Check installation instruction for different OS from this link: [[https:~~/~~/nodered.org/docs/getting-started/>>https://nodered.org/docs/getting-started/]]
13 13  
10 +== Install Example for CENTOS ==
14 14  
12 +=== Installation ===
15 15  
16 -== 1.1  Install Example for CENTOS ==
17 -
18 -
19 -=== 1.1.1  Installation ===
20 -
21 -
22 22  (% class="box infomessage" %)
23 23  (((
24 -Reference Instruction from this link:  [[https:~~/~~/github.com/node-red/linux-installers>>https://github.com/node-red/linux-installers]]
16 +Reference Instruction from this link: ~_~_~_~_~_~_~_~_~_~_~_~_~_~__-
25 25  Run below commands and wait for installation complete.
26 26  )))
27 27  
28 -[[image:image-20220526161040-1.png]]
20 +[[image:image-20220519102228-2.png]]
29 29  
22 +**Verify if the installation was successful**
30 30  
31 -(% style="color:blue" %)**Verify if the installation was successful**
24 +Type in the command line interface  node-red  
32 32  
33 -Type in the command line interface ** (% style="color:red" %)node-red(%%)**(% style="color:red" %)  
34 -
35 35  The following information appears to prove that the installation has been successful
36 36  
37 -[[image:image-20220526161103-2.png]]
28 +[[image:image-20220519103318-3.png]]
38 38  
39 39  
31 +=== If you want to start Node-RED as a background process ===
40 40  
41 -=== 1.1.2  If you want to start Node-RED as a background process ===
33 +Type in the command line interface  nohup node-red &
42 42  
43 -
44 -Type in the command line interface  (% style="color:red" %)**nohup node-red &**
45 -
46 46  It will prompt after startup
47 47  
48 48  [[image:image-20220519104601-5.png]]
49 49  
50 -After seeing the above information, press **enter**
39 +After seeing the above information, press enter
51 51  
52 52  Type in the command line  exit
53 53  
54 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 55  
45 +== Install in Dragino Gataway ==
56 56  
57 57  
58 -== 1.2  Install in Dragino Gataway ==
48 += Use Node-RED =
59 59  
50 +== Login to Node-RED interface ==
60 60  
61 -Dragino Gateway is already installed, no need for users to install it by themselves.
62 -
63 -
64 -
65 -= 2.  General Use of  Node-RED =
66 -
67 -
68 -This section describes some basic features of Node-RED. For more info please check the [[Node-RED official document>>https://nodered.org/]].
69 -
70 -
71 -== 2.1  Login to Node-RED interface ==
72 -
73 -
74 74  Enter your public IP address followed by the port number 1880
75 75  
76 76  example：[[http:~~/~~/xxx.xx.xx.xx:1880/>>http://119.91.62.30:1880/]]
77 77  
78 -[[image:image-20220519104115-4.png||height="280" width="768"]]
56 +[[image:image-20220519104115-4.png]]
79 79  
80 80  
59 +== Add Sensor & Payload ==
81 81  
82 -== 2.2  Add flow ==
83 83  
62 +== Plot Chart for sensors ==
84 84  
85 -Take NBSN95 mod1 UDP protocol as an example
86 86  
87 -After logging into the interface click** (% style="color:red" %)"+" (%%)**to create a flow
65 +== Store Value ==
88 88  
89 -[[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="183" width="770"]]
90 90  
68 +== Email Notification ==
91 91  
92 92  
93 -Rename the stream
71 += Input Data Flow =
94 94  
95 -[[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="535" width="548"]]
73 +== MQTT ==
96 96  
75 +== UDP ==
97 97  
98 -[[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" height="461" width="753"]]
77 +== TCP ==
99 99  
79 +== Get data from LoRaWAN Server (TTN) ==
100 100  
101 -[[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"]]
102 102  
103 -Drag UDP into the editing area
104 -
105 -
106 -
107 -[[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"]]
108 -
109 -
110 -The same method as above, drag and drop functions and debug into the editing area
111 -
112 -[[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" height="442" width="776"]]
113 -
114 -
115 -
116 -configure UDP in
117 -
118 -[[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" height="332" width="767"]]
119 -
120 -
121 -Write to the UDP port that the device node sends to the server
122 -
123 -Example My UDP device node sends to server port 8585
124 -just write 8585
125 -
126 -
127 -(% 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.**
128 -
129 -
130 -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.
131 -
132 -[[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" height="415" width="735"]]
133 -
134 -
135 -[[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" height="348" width="779"]]
136 -
137 -
138 -[[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" height="437" width="744"]]
139 -
140 -
141 -[[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" height="229" width="777"]]
142 -
143 -
144 -
145 -When the node successfully sends data, the effect shown in the following figure will appear
146 -
147 -[[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" height="403" width="799"]]
148 -
149 -
150 -
151 -=== 2.2.1  About function ===
152 -
153 -
154 -If you are familiar with JS code, you can write it yourself
155 -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
156 -
157 -
158 -[[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" height="478" width="789"]]
159 -
160 -
161 -
162 -== 2.3  Plot Chart for sensors ==
163 -
164 -
165 -If you need data visualization, please refer to the following
166 -
167 -
168 -[[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"]]
169 -
170 -
171 -
172 -(% style="color:blue" %)**1. Click Install
173 -2. Search the dashboard
174 -3. Click Install**
175 -
176 -
177 -
178 -[[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" height="763" width="835"]]
179 -
180 -
181 -
182 -After the installation is successful, nodered will show the following node icon
183 -
184 -[[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"]]
185 -
186 -
187 -
188 -=== 2.3.1  the line chart as an example ===
189 -
190 -
191 -Drag the line chart to the editing area
192 -
193 -Just drag and drop as many as you need, or you can copy
194 -
195 -The demo uses 3 kinds. Voltage, temperature, humidity
196 -
197 -
198 -[[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" height="242" width="743"]]
199 -
200 -
201 -
202 -double click function
203 -
204 -
205 -[[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" height="549" width="749"]]
206 -
207 -
208 -
209 -Adjusted to 3, because we need to display 3 charts
210 -
211 -
212 -[[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" height="418" width="755"]]
213 -
214 -
215 -
216 -=== 2.3.2  the chart settings ===
217 -
218 -
219 -Double-click while setting up the node as above
220 -
221 -
222 -[[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" height="703" width="729"]]
223 -
224 -
225 -[[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" height="501" width="727"]]
226 -
227 -
228 -[[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" height="554" width="722"]]
229 -
230 -
231 -[[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" height="444" width="721"]]
232 -
233 -
234 -[[image:image-20220525185746-2.png||height="421" width="724"]]
235 -
236 -
237 -[[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" height="722" width="726"]]
238 -
239 -
240 -
241 -After the display interface is defined for the first time, subsequent charts can directly select the display interface
242 -
243 -
244 -[[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" height="644" width="724"]]
245 -
246 -​​​​​​
247 -
248 -[[image:image-20220525190106-3.png||height="575" width="724"]]
249 -
250 -
251 -
252 -Connect graph nodes to functions with lines
253 -
254 -Click to deploy
255 -
256 -
257 -[[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" height="256" width="726"]]
258 -
259 -Enter the server public IP + port 1880/ui
260 -
261 -example：[[http:~~/~~/xxx.xx.xx.xx:1880/ui>>url:http://119.91.62.30:1880/ui/#!/18?socketid=WY1MCE0RFEKHey8KAADj]]
262 -
263 -
264 -
265 -[[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" height="203" width="735"]]
266 -
267 -
268 -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.
269 -
270 -
271 -
272 -== 2.4  Store Value ==
273 -
274 -
275 -Regarding storage, we recommend two ways.
276 -
277 -
278 -
279 -=== 2.4.1  1. Generate txt document directly ===
280 -
281 -
282 -Sample JSON file:链接转到示例JSON文件
283 -
284 -[[image:image-20220713102658-1.png||height="346" width="728"]]
285 -
286 -
287 -
288 -=== 2.4.2  2. Use sqlite database ===
289 -
290 -
291 -==== (% style="color:blue" %)**1.  Install SQLite**(%%) ====
292 -
293 -
294 -[[image:image-20220713111030-2.png||height="438" width="739"]]
295 -
296 -
297 -
298 -==== (% style="color:blue" %)**2.  After the installation is successful, the nodes in the picture will appear**(%%) ====
299 -
300 -
301 -[[image:image-20220713111200-3.png]]
302 -
303 -
304 -
305 -==== (% style="color:blue" %)**3.  Import sample flow**(%%) ====
306 -
307 -
308 -Refer to the import example below to import the sqlite example flow
309 -
310 -Download sample JSON file link: 链接
311 -
312 -
313 -
314 -= 3.  Import Input Flow for Dragino Sensors =
315 -
316 -
317 -Dragino provides input flow examples for the sensors.
318 -
319 -User can download the required JSON file through [[Dragino Node-RED input flow template>>https://github.com/dragino/dragino-end-node-decoder]].
320 -
321 -Take LHT65 as an example  (Assume this node is already registered with TTN, MQTT protocol to connect)
322 -
323 -[[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"]]
324 -
325 -[[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"]]
326 -
327 -[[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" height="443" width="773"]]
328 -
329 -[[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" height="568" width="768"]]
330 -
331 -After the import is successful, change the MQTT in node to your TTN information
332 -
333 -[[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" height="643" width="772"]]
334 -
335 -[[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" height="648" width="773"]]
336 -
337 -
338 -
339 -Configure information consistent with your TTN
340 -
341 -[[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" height="349" width="758"]]
342 -
343 -[[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" height="376" width="758"]]
344 -
345 -
346 -
347 -API keys generated by the password for you
348 -
349 -[[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" height="370" width="759"]]
350 -
351 -
352 -Topic modify it to the following format
353 -
354 -v3/(% style="color:red" %)Application ID(%%)@ttn/devices/(% style="color:red" %)End device ID(%%)/up
355 -
356 -[[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" height="690" width="755"]]
357 -
358 -After the modification is completed, click Deploy
82 += Example =
LHT65N-chirpstack decoder.txt
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1 -function Decode(fPort, bytes){
2 -var data = {
3 - //External sensor
4 - Ext_sensor:
5 - {
6 - "0":"No external sensor",
7 - "1":"Temperature Sensor",
8 - "4":"Interrupt Sensor send",
9 - "5":"Illumination Sensor",
10 - "6":"ADC Sensor",
11 - "7":"Interrupt Sensor count",
12 - }[bytes[6]&0x7F],
13 -
14 - //Battery,units:V
15 - BatV:((bytes[0]<<8 | bytes[1]) & 0x3FFF)/1000,
16 -
17 - //SHT20,temperature,units:
18 - TempC_SHT:((bytes[2]<<24>>16 | bytes[3])/100).toFixed(2),
19 -
20 - //SHT20,Humidity,units:%
21 - Hum_SHT:((bytes[4]<<8 | bytes[5])/10).toFixed(1),
22 -
23 - //DS18B20,temperature,units:
24 - TempC_DS:
25 - {
26 - "1":((bytes[7]<<24>>16 | bytes[8])/100).toFixed(2),
27 - }[bytes[6]&0xFF],
28 -
29 - //Exti pin level,PA4
30 - Exti_pin_level:
31 - {
32 - "4":bytes[7] ? "High":"Low",
33 - }[bytes[6]&0x7F],
34 -
35 - //Exit pin status,PA4
36 - Exti_status:
37 - {
38 - "4":bytes[8] ? "True":"False",
39 - }[bytes[6]&0x7F],
40 -
41 - //BH1750,illumination,units:lux
42 - ILL_lux:
43 - {
44 - "5":bytes[7]<<8 | bytes[8],
45 - }[bytes[6]&0x7F],
46 -
47 - //ADC,PA4,units:V
48 - ADC_V:
49 - {
50 - "6":(bytes[7]<<8 | bytes[8])/1000,
51 - }[bytes[6]&0x7F],
52 -
53 - //Exti count,PA4,units:times
54 - Exit_count:
55 - {
56 - "7":bytes[7]<<8 | bytes[8],
57 - }[bytes[6]&0x7F],
58 -
59 - //Applicable to working mode 4567,and working mode 467 requires short circuit PA9 and PA10
60 - No_connect:
61 - {
62 - "1":"Sensor no connection",
63 - }[(bytes[6]&0x80)>>7],
64 - };
65 - return data;
66 -}
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