Changes for page Node-RED_Install and Use

Last modified by Herong Lu on 2024/03/05 08:37
<
From version < 10.1 >
edited by Herong Lu
on 2022/05/19 11:34
To version < 22.1 >
edited by Herong Lu
on 2022/05/25 18:56
>
Change comment: Uploaded new attachment "image-20220525185630-1.png", version {1}

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Title
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1 -nodered_Install and Use
1 +Node-RED_Install and Use
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1 -Click the link to jump to the official installation instructions of nodered
1 +(% class="wikigeneratedid" id="HEndDeviceFrequencyBand" %)
2 + **Contents：**
2 2  
3 -[[https:~~/~~/nodered.org/docs/getting-started/>>https://nodered.org/docs/getting-started/]]
4 +{{toc/}}
4 4  
5 -== Install according to your operating system ==
6 += Installation =
6 6  
7 -[[image:微信图片_20220519095320.png]]
8 +Check installation instruction for different OS from this link: [[https:~~/~~/nodered.org/docs/getting-started/>>https://nodered.org/docs/getting-started/]]
8 8  
9 -== The following is a local linux (CentOS) operating system installation as an example ==
10 +== Install Example for CENTOS ==
10 10  
11 -[[image:微信图片_20220519101243.png]]
12 +=== Installation ===
12 12  
13 -[[image:image-20220519101800-1.png]]
14 +(% class="box infomessage" %)
15 +(((
16 +Reference Instruction from this link:  [[https:~~/~~/github.com/node-red/linux-installers>>https://github.com/node-red/linux-installers]]
17 +Run below commands and wait for installation complete.
18 +)))
14 14  
15 -== Paste into the command line interface and run， ==
16 -
17 -== Wait for the installation to complete ==
18 -
19 19  [[image:image-20220519102228-2.png]]
20 20  
21 -== Verify that the installation was successful ==
22 +**Verify if the installation was successful**
22 22  
23 23  Type in the command line interface  node-red  
24 24  
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26 26  
27 27  [[image:image-20220519103318-3.png]]
28 28  
29 -== Login to nodered interface ==
30 30  
31 -Enter your public IP address followed by the port number 1880
31 +=== If you want to start Node-RED as a background process ===
32 32  
33 -example：[[http:~~/~~/xxx.xx.xx.xx:1880/>>http://119.91.62.30:1880/]]
34 -
35 -[[image:image-20220519104115-4.png]]
36 -
37 -
38 -== If you want to start nodered as a background process ==
39 -
40 40  Type in the command line interface  nohup node-red &
41 41  
42 42  It will prompt after startup
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48 48  Type in the command line  exit
49 49  
50 50  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
44 +
45 +== Install in Dragino Gataway ==
46 +
47 +
48 += Use Node-RED =
49 +
50 +== Login to Node-RED interface ==
51 +
52 +Enter your public IP address followed by the port number 1880
53 +
54 +example：[[http:~~/~~/xxx.xx.xx.xx:1880/>>http://119.91.62.30:1880/]]
55 +
56 +[[image:image-20220519104115-4.png||height="352" width="969"]]
57 +
58 +
59 +== Add flow ==
60 +
61 +Take NBSN95 mod1 UDP protocol as an example
62 +
63 +After logging into the interface click '+' to create a flow
64 +
65 +[[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"]]
66 +
67 +Rename the stream
68 +
69 +[[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"]]
70 +
71 +[[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"]]
72 +
73 +[[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"]]
74 +
75 +Drag UDP into the editing area
76 +
77 +[[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"]]
78 +
79 +The same method as above, drag and drop functions and debug into the editing area
80 +
81 +[[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"]]
82 +
83 +configure UDP in
84 +
85 +[[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"]]
86 +
87 +Write to the UDP port that the device node sends to the server
88 +
89 +Example My UDP device node sends to server port 8585
90 +just write 8585
91 +
92 +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.
93 +
94 +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.
95 +
96 +[[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"]]
97 +
98 +[[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"]]
99 +
100 +[[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"]]
101 +
102 +[[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"]]
103 +
104 +When the node successfully sends data, the effect shown in the following figure will appear
105 +
106 +[[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"]]
107 +
108 +=== About function ===
109 +
110 +If you are familiar with JS code, you can write it yourself
111 +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
112 +
113 +[[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"]]
114 +
115 +
116 +== Plot Chart for sensors ==
117 +
118 +
119 +== Store Value ==
120 +
121 +
122 +== Email Notification ==
123 +
124 +
125 += Input Flow =
126 +
127 +== MQTT ==
128 +
129 +== UDP ==
130 +
131 +== TCP ==
132 +
133 +== Get data from LoRaWAN Server (TTN) ==
134 +
135 +
136 += Example =
LHT65N-chirpstack decoder.txt
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1 +XWiki.Edwin
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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 +}
image-20220525185630-1.png
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