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Wiki source code of LoRaWAN IoT Kit v3 User Manual

Version 33.2 by Xiaoling on 2022/11/21 18:05
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Xiaoling 6.2 1 (% style="text-align:center" %)
2 [[image:1669017918121-199.png||height="359" width="358"]]
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4
Xiaoling 31.3 5 **Table of Contents:**
Xiaoling 6.2 6
Xiaoling 31.3 7 {{toc/}}
Xiaoling 6.2 8
9
10
11
12
13 = 1. Overview =
14
15 == 1.1 What is Dragino LoRaWAN IoT Kit v3? ==
16
17
18 (((
19 (% style="color:blue" %)**Dragino LoRaWAN IoT Kit v3**(%%) is designed to facilitate beginners and developers to quickly learn and demonstrate LoRa/LoRaWAN and IoT technology. It helps users to turn the idea into a practical application and make the Internet of Things a reality.
20 )))
21
22 (((
23 The LoRaWAN IoT Kit v3 can be used to evaluate the multi-channel LoRaWAN solution and single-channel private LoRa solution. Users can also use LoRaWAN IoT Kit v3 to test different network structure solutions and find the best for their IoT solution.
24 )))
25
26 (((
27 The LoRaWAN IoT kit v3 (% style="color:blue" %)**shows how to build a LoRaWAN network**(%%), and (% style="color:blue" %)**how to use the network to send data from a LoRa sensor node to the cloud server.** (%%)Depends on the actually use environment, the LoRaWAN gateway will connect your other LoRa nodes up to 500 ~~ 5,000 meters.
28 )))
29
30
31 == 1.2 Features ==
32
33 * Open Source LoRa/LoRaWAN kits
34
35 * Support multi-channels LoRaWAN and Single-Channel LoRa
36
37 * Support various network structures
38
Xiaoling 31.3 39
Xiaoling 33.2 40
Xiaoling 6.2 41 == 1.3 What can you learn from the kit? ==
42
43
44 (% style="color:blue" %)**The goals through this LoRaWAN IoT kit v3**:
45
46 * Understand the structure of an Internet of Things network, and how does an IoT network works
47
48 * Learn coding method for Arduino micro controller
49
50 * Learn some common sensors.
51
52 * Learn some basic commands for Linux
53
54 * Learn about LoRaWAN and how to set up a LoRaWAN network.
55
56 * Learn about Node-Red and how to set up it as IoT server and plot data.
57
58 * Learn different way to connect LoRaWAN network to IoT Server and compare their advantages / disadvantages.
59
Xiaoling 31.3 60
Xiaoling 33.2 61
Xiaoling 6.2 62 == 1.4 What parts Dragino LoRa IoT v3 includes? ==
63
64
65 [[image:1669019631002-626.png]]
66
67
68
69 (% style="color:blue" %)**LoRaWAN IoT Kit v3 Packing List**:
70
71 * [[LPS8v2>>url:https://www.dragino.com/products/lora-lorawan-gateway/item/228-lps8v2.html]] LoRaWAN Gateway
72
73 * [[LA66 LoRaWAN Shield>>url:https://www.dragino.com/products/lora/item/231-la66-lorawan-shield.html]] for Arduino
74
75 * [[LA66 USB LoRaWAN Adapter>>url:https://www.dragino.com/products/lora/item/232-la66-usb-lorawan-adapter.html]] for PC/Mobile/RPi
76
77 * 1 x DHT11 Temperature & Humidity Sensor
78
79 * 1 x RGB LED
80
81 * 20 x dupont cable (male to male)
82
83 * 20 x dupont cable (female to female)
84
85 * 20 x dupont cable (male to female)
86
Xiaoling 31.3 87
Xiaoling 33.2 88
Xiaoling 6.2 89 = 2. Example 1: Test a LoRaWAN network =
90
91
92 This example describes how to use LPS8v2, LA66 Shield & LA66 USB to set up a LoRaWAN network and connect it to [[TTNv3 LoRaWAN Server>>url:https://accounts.thethingsindustries.com/]]. It also shows how to use external application server to monitor / manage the LoRa Nodes.
93
94 The network structure of this example is as below.
95
96
97 [[image:1669019691933-772.png]]
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99
Xiaoling 31.3 100
Xiaoling 6.2 101 (% style="color:blue" %)**STEPS:**
102
103 ~1. Register LPS8v2 gateway to TTN so provide a LoRaWAN coverage. See section “[[Gateway Registration for Semtech UDP ~~-~~-~> Primary LoRaWAN Server>>url:http://wiki.dragino.com/xwiki/bin/view/Main/Notes%20for%20TTN/#H2.A0GatewayRegistrationforSemtechUDP]]” 
104
105 2. Register LA66 Shield to TTN and uplink Temperature to TTN. See section “[[Example: Log Temperature Sensor(DHT11) and send data to TTN, show it in Node-RED>>url:http://wiki.dragino.com/xwiki/bin/view/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LA66%20LoRaWAN%20Shield%20User%20Manual/#H1.7A0Example:LogTemperatureSensor28DHT1129andsenddatatoTTN2CshowitinNode-RED.]].”
106
107 3. Register LA66 USB to TTN and track people location. See “[[Example: Use of LA66 USB LoRaWAN Adapter and mobile APP>>url:http://wiki.dragino.com/xwiki/bin/view/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LA66%20USB%20LoRaWAN%20Adapter%20User%20Manual/#H1.9A0Example:UseofA0LA66USBLoRaWANAdapterandmobileAPP]]”
108
109
Xiaoling 31.3 110
Xiaoling 6.2 111 (% style="color:blue" %)**Result:**
112
113 [[image:1669019732684-677.png]]
114
115
116 = 3. Example 2: Test Built-In LoRaWAN Server =
117
Xiaoling 16.2 118
Xiaoling 6.2 119 This example describes how to use LPS8v2, LA66 Shield & LA66 USB to set up a LoRaWAN network and connect it to built-in LoRaWAN Server in. It also shows how to use external application server to monitor / manage the LoRa Nodes.
120
121
Xiaoling 16.2 122 [[image:1669019757521-444.png]]
123
124
Xiaoling 6.2 125 This example is almost the same as Example1, the difference is that this example use the built-in LoRaWAN server (TTNv3 Stack) in LPS8v2. While Example 1 use the public TTN server.
126
127 TTN v3 stack has the same configure method as the public TTN server. When user test example 2 here. User need to log in the TTNv3 stack in LPS8v2 as per below:
128
Xiaoling 16.2 129 **Input URL( __http:~/~/<hostname>:8080 or http:~/~/<local-IPV4-address> __) in your browser.**
Xiaoling 6.2 130
Xiaoling 16.2 131 **Such as  __http:~/~/dragino-54ff12:8080  or http:~/~/<Local-IPV4-Address>__**
Xiaoling 6.2 132
133
134 (% style="color:blue" %)**Login account:**
135
Xiaoling 16.2 136 **User ID:  admin**
Xiaoling 6.2 137
Xiaoling 16.2 138 **Password:  dragino**
Xiaoling 6.2 139
Xiaoling 16.2 140 [[image:1669019821266-501.png]]
Xiaoling 6.2 141
142
143
144 = 4. Example 3: Test Built-in LoRaWAN server and Application server =
145
Xiaoling 16.2 146
Xiaoling 6.2 147 This example describes how to use LPS8v2, LA66 Shield & LA66 USB to set up a LoRaWAN network and connect it to built-in LoRaWAN Server in. It also shows how to use external application server to monitor / manage the LoRa Nodes.
148
149
Xiaoling 16.2 150 [[image:1669019855783-448.png]]
Xiaoling 6.2 151
Xiaoling 16.2 152
Xiaoling 6.2 153 This example is quite similiar as Example2, the difference is that this example use the built-in Application server (Node-Red) in LPS8v2. While Example 2 use the public Node-Red
154
155 Below is the Node-Red access instruction of LPS8v2:
156
Xiaoling 16.2 157 You can access the gateway's built-in AS server of Node-Red via the **URL(__http:~/~/<hostname>:1880 or http:~/~/<local-IPV4-address>__)** in your browser.
Xiaoling 6.2 158
Xiaoling 16.2 159 **Such as __http:~/~/dragino-54ff12:1880  or [[http:~~/~~/<Local-IPV4-Address~>>>http://<Local-IPV4-Address>]]__**
Xiaoling 6.2 160
161
Xiaoling 16.2 162 [[image:1669019884655-805.png]]
Xiaoling 6.2 163
164
165 = 5. Example 4: Peer to Peer Test on end node =
166
Xiaoling 16.2 167
Xiaoling 6.2 168 This example describes how to test peer to peer communicate between LoRa End Node.
169
170
Xiaoling 16.2 171 [[image:1669019964124-630.png]]
172
173
Xiaoling 6.2 174 In this example, the end nodes LA66 Shield and LA66 USB are not use LoRaWAN protocol. Users need to flash them with the firmware support private LoRa.
175
Xiaoling 31.4 176 * (% style="color:blue" %)**Software Location:**(%%)**  [[LA66 Peer to Peer firmware>>url:http://wiki.dragino.com/xwiki/bin/view/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LA66%20LoRaWAN%20Shield%20User%20Manual/Instruction%20for%20LA66%20Peer%20to%20Peer%20firmware/]]**
Xiaoling 6.2 177
Xiaoling 31.4 178 * (% style="color:blue" %)**How to Flash Firmware:  **(%%)** [[For LA66 Shield>>url:http://wiki.dragino.com/xwiki/bin/view/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LA66%20LoRaWAN%20Shield%20User%20Manual/#H1.9A0UpgradeFirmwareofLA66LoRaWANShield]] , For [[LA66 USB>>url:http://wiki.dragino.com/xwiki/bin/view/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LA66%20USB%20LoRaWAN%20Adapter%20User%20Manual/#H1.10A0UpgradeFirmwareofLA66USBLoRaWANAdapter]].**
Xiaoling 6.2 179
180 This example will show how to get Temperature sensor value from LA66 Shield and send it to LA66 USB. LA66 USB is connected to mobile phone. So user can see the temperature value in mobile phone directly . User can also send message from mobile phone to LA66 to control the RGB LED.
181
182
183 == 5.1 Set Up LA66 Shield + UNO ==
184
185 === 5.1.1 Set up LA66 Module ===
186
Xiaoling 16.2 187
Kilight Cao 32.1 188 LA66 Module is loaded with the firmware **[[LA66 Peer to Peer firmware>>url:http://wiki.dragino.com/xwiki/bin/view/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LA66%20LoRaWAN%20Shield%20User%20Manual/Instruction%20for%20LA66%20Peer%20to%20Peer%20firmware/]]** and user can use AT Command to set up LA66 with below parameters:
Xiaoling 6.2 189
Kilight Cao 33.1 190 (% class="box infomessage" %)
191 (((
192 (% style="color:#037691" %)**AT+FRE=904.100,904.100   ** (%%) ~-~->  TX and RX frequency set: 9041100000
Xiaoling 6.2 193
Kilight Cao 33.1 194 (% style="color:#037691" %)**AT+BW=0,0 ** (%%) ~-~->  TX and RX Bandwidth set: 125kHz
Xiaoling 6.2 195
Kilight Cao 33.1 196 (% style="color:#037691" %)**AT+SF=12,12    ** (%%) ~-~->  TX and RX Spreading Factor set: SF10
Xiaoling 6.2 197
Kilight Cao 33.1 198 (% style="color:#037691" %)**AT+CRC=1,1  ** (%%) ~-~->  0: CRC OFF ,1: CRC ON
Xiaoling 6.2 199
Kilight Cao 33.1 200 (% style="color:#037691" %)**AT+HEADER=0,0**       (%%) ~-~->  Header Type: explicit, explicit
Xiaoling 6.2 201
Kilight Cao 33.1 202 (% style="color:#037691" %)**AT+CR=1,1  ** (%%) ~-~->  CR: 4/5, 4/5
Xiaoling 6.2 203
Kilight Cao 33.1 204 (% style="color:#037691" %)**AT+IQ=0,0**        (%%) ~-~->  Invert IQ: 0,0
Xiaoling 6.2 205
Kilight Cao 33.1 206 (% style="color:#037691" %)**AT+PREAMBLE=8,8  ** (%%) ~-~->  TX and RX Preamble Length set: 8
Xiaoling 6.2 207
Kilight Cao 33.1 208 (% style="color:#037691" %)**AT+SYNCWORD=0**     (%%) ~-~->  Syncword**(0: private，1: public)**
Xiaoling 6.2 209
Kilight Cao 33.1 210 (% style="color:#037691" %)**AT+RXMOD=6,0   ** (%%) ~-~->  Rx Timeout and Reply mode
211 )))
Xiaoling 6.2 212
Xiaoling 33.2 213
Xiaoling 6.2 214 === 5.1.2 Hardware Connection ===
215
216
Xiaoling 16.2 217 [[image:1669020260360-253.png]]
Xiaoling 6.2 218
219
Xiaoling 16.2 220 There is a sensor DHT11 (Temperature & Humidity sensor) and LED RGB connected to LA66 Shield + UNO. Please use the connection as we show in the photo.
Xiaoling 6.2 221
Xiaoling 16.2 222
Xiaoling 6.2 223 === 5.1.3 Set up Arduino UNO ===
224
Xiaoling 16.2 225
Kilight Cao 32.1 226 The sketch for this example is **[[Log-Temperature-Sensor-and- Control-RBG-LED.ino>>url:https://www.dropbox.com/sh/r5l3h5fhifrqbxn/AACgNoQ-aYnvWOxGwUDWxNlFa?dl=0]]**
Xiaoling 6.2 227
228
Xiaoling 16.2 229 (% style="color:blue" %)**Upload the code to UNO:**
Xiaoling 6.2 230
Xiaoling 16.2 231 [[image:1669020288319-334.png]]
Xiaoling 6.2 232
233
234
Xiaoling 16.2 235 (% style="color:blue" %)**Check the LA66 Shield data:**
Xiaoling 6.2 236
Xiaoling 16.2 237 [[image:1669020309356-484.png]]
238
239
Xiaoling 6.2 240 == 5.2 Set Up LA66 USB ==
241
Xiaoling 16.2 242
Kilight Cao 32.1 243 LA66 USB is loaded with the firmware **[[LA66 Peer to Peer firmware>>url:http://wiki.dragino.com/xwiki/bin/view/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LA66%20LoRaWAN%20Shield%20User%20Manual/Instruction%20for%20LA66%20Peer%20to%20Peer%20firmware/]]** and user can use AT Command to set up LA66 USB with below parameters:
Xiaoling 6.2 244
Kilight Cao 33.1 245 (% class="box infomessage" %)
246 (((
Xiaoling 16.2 247 (% style="color:#037691" %)**AT+FRE=904.100,904.100**(%%)  ~-~->  TX and RX frequency set: 904100000 
Xiaoling 6.2 248
Xiaoling 16.2 249 (% style="color:#037691" %)**AT+BW=0,0**    (%%) ~-~->  TX and RX Bandwidth set: 125kHz
Xiaoling 6.2 250
Xiaoling 16.2 251 (% style="color:#037691" %)**AT+SF=10,10**  (%%) ~-~->  TX and RX Spreading Factor set: SF10 
Xiaoling 6.2 252
Xiaoling 16.2 253 (% style="color:#037691" %)**AT+CRC=1,1** (%%) ~-~->  0: CRC OFF ,1: CRC ON
Xiaoling 6.2 254
Xiaoling 16.2 255 (% style="color:#037691" %)**AT+HEADER=0,0**  (%%) ~-~->  Header Type: explicit, explicit
Xiaoling 6.2 256
Xiaoling 16.2 257 (% style="color:#037691" %)**AT+CR=1,1**   (%%) ~-~->  CR: 4/5, 4/5
Xiaoling 6.2 258
Xiaoling 16.2 259 (% style="color:#037691" %)**AT+IQ=0,0**    (%%) ~-~->  Invert IQ: 0,0
Xiaoling 6.2 260
Xiaoling 16.2 261 (% style="color:#037691" %)**AT+PREAMBLE=8,8**  (%%) ~-~->  TX and RX Preamble Length set: 8
Xiaoling 6.2 262
Xiaoling 16.2 263 (% style="color:#037691" %)**AT+SYNCWORD=0**   (%%) ~-~->  Syncword**(0: private，1: public)**
Xiaoling 6.2 264
Xiaoling 16.2 265 (% style="color:#037691" %)**AT+RXMOD=65535,0**  (%%) ~-~->  Set the receive mode
Xiaoling 6.2 266
Xiaoling 16.2 267 (% style="color:#037691" %)**AT+RXDAFORM=1**  (%%) ~-~->  ASCII to string
Kilight Cao 33.1 268 )))
Xiaoling 6.2 269
270 Users using USB to Type-C adapter is needed to connect to a Mobile phone, Users need to download the USB Serial APP in their phones.
271
Kilight Cao 32.1 272 For example, **[[USB Serial Console>>url:https://play.google.com/store/apps/details?id=jp.sugnakys.usbserialconsole]]** (Android Version Only)
Xiaoling 6.2 273
274
Xiaoling 16.2 275 [[image:1669020888886-358.png]]
Xiaoling 6.2 276
277
278 The serial port configuration for LA66 USB is as follows:
279
Xiaoling 23.2 280 [[image:1669021003598-788.png]] [[image:1669021009003-965.png]]
Xiaoling 6.2 281
Xiaoling 23.2 282 (% style="display:none" %) (%%)
Xiaoling 6.2 283
284 == 5.3 Test result ==
285
Xiaoling 23.2 286
Xiaoling 6.2 287 Users can view the temperature and humidity information received by LA66 USB in the mobile APP
288
Xiaoling 31.2 289 [[image:1669021002246-577.png]] [[image:1669021002645-501.png]]
Xiaoling 6.2 290
291 Send a message to the LA66 USB control LA66 Shield + UNO external RBG LED through the mobile phone:
292
293
Xiaoling 31.4 294 For example, if you send (% style="color:blue" %)**AT+SEND=1,000101,2,0**(%%) the RBG LED will light up red.
Xiaoling 6.2 295
Xiaoling 31.2 296 [[image:1669021075655-472.png]]
Xiaoling 6.2 297
298
Xiaoling 23.2 299 [[image:1669021098924-484.png]]
Xiaoling 6.2 300
301
Xiaoling 31.2 302 = 6. Example 5: Peer to Peer Test and plot the data in LPS8v2 =
Xiaoling 23.2 303
304
Xiaoling 6.2 305 This example describes how to test peer to peer communicate between LoRa End Node and LoRa Gateway.
306
307
Xiaoling 31.2 308 [[image:1669021294907-277.png]]
309
310
Xiaoling 6.2 311 In this example, the end nodes LA66 Shield and LA66 USB are not use LoRaWAN protocol. Users need to flash them with the firmware support private LoRa.
312
Xiaoling 31.2 313 * (% style="color:blue" %)**Software Location**(%%)**: [[LA66 Peer to Peer firmware>>url:http://wiki.dragino.com/xwiki/bin/view/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LA66%20LoRaWAN%20Shield%20User%20Manual/Instruction%20for%20LA66%20Peer%20to%20Peer%20firmware/]]**
Xiaoling 6.2 314
Xiaoling 31.2 315 * (% style="color:blue" %)**How to Flash Firmware**(%%)**: [[For LA66 Shield>>url:http://wiki.dragino.com/xwiki/bin/view/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LA66%20LoRaWAN%20Shield%20User%20Manual/#H1.9A0UpgradeFirmwareofLA66LoRaWANShield]] , For [[LA66 USB>>url:http://wiki.dragino.com/xwiki/bin/view/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LA66%20USB%20LoRaWAN%20Adapter%20User%20Manual/#H1.10A0UpgradeFirmwareofLA66USBLoRaWANAdapter]].**
Xiaoling 6.2 316
317 This example will show how to get Temperature sensor value from LA66 Shield and send it to LA66 USB. LA66 USB is connected to LPS8v2. LPS8v2 will receive the data from LA66 USB and plot the data in the built-in Node-Red server.
318
319 (% style="color:red" %)**Notice:**
320
Xiaoling 31.3 321 1. LPS8v2 has LoRaWAN concentrator which doesn't do anything in this example. This example doesn't need this SX1302 concentrator.
322
Kilight Cao 32.1 323 2. For mass deployment, user can use the LG01v2 instead of LPS8v2+LA66 USB. LG01v2 already include LA66 module inside.
Xiaoling 6.2 324
Kilight Cao 32.1 325 Use can check **[[THIS LINK>>url:http://wiki.dragino.com/xwiki/bin/view/Main/User%20Manual%20for%20All%20Gateway%20models/LG01v2/#H5.2Example:LG01v2]]** for an instruction of this example. In the link it uses LG01v2 as example, the use for LPS8v2+LA66 USB is the same as LG01v2.
Xiaoling 6.2 326
327
328 = 7. Example 6: Limited LoRaWAN relay =
329
330
331 This example describes a limited LoRaWAN relay method with the use of LA66 module.
332
333
Xiaoling 31.2 334 [[image:1669021378154-590.png]]
Xiaoling 6.2 335
336
337 In this example, the end nodes LA66 Shield and LA66 USB are not use LoRaWAN protocol. Users need to flash them with the firmware support private LoRa.
338
Xiaoling 31.2 339 * (% style="color:blue" %)**Software Location**(%%): **[[LA66 USB use LoRaWAN firmware>>url:https://www.dropbox.com/sh/els49fz9rd6fu1y/AAAt-kKIvXu1ZOK0hWysq97na?dl=0]], [[LA66 Shield use Point to Point firmware>>url:https://www.dropbox.com/sh/els49fz9rd6fu1y/AAAt-kKIvXu1ZOK0hWysq97na?dl=0]].**
Xiaoling 6.2 340
Xiaoling 31.2 341 * (% style="color:blue" %)**How to Flash Firmware**(%%):  **[[For LA66 Shield>>url:http://wiki.dragino.com/xwiki/bin/view/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LA66%20LoRaWAN%20Shield%20User%20Manual/#H1.9A0UpgradeFirmwareofLA66LoRaWANShield]] , For [[LA66 USB>>url:http://wiki.dragino.com/xwiki/bin/view/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LA66%20USB%20LoRaWAN%20Adapter%20User%20Manual/#H1.10A0UpgradeFirmwareofLA66USBLoRaWANAdapter]].**
Xiaoling 6.2 342
Xiaoling 31.2 343 (% style="color:red" %)**Note: LA66 USB use a LoRaWAN version firmware and user need to set it to work in fix frequency, fix DR and ABP mode. LA66 already register to TTNv3 in ABP mode.**
Xiaoling 6.2 344
345
346 == 7.1 Set up LA66 USB ==
347
Xiaoling 31.2 348
Kilight Cao 32.1 349 LA66 USB is loaded with the firmware **[[LA66 USB use LoRaWAN firmware>>url:https://www.dropbox.com/sh/els49fz9rd6fu1y/AAAt-kKIvXu1ZOK0hWysq97na?dl=0]]** and user can use AT Command to set up LA66 with below parameters:
Xiaoling 33.2 350
Kilight Cao 33.1 351 (% class="box infomessage" %)
352 (((
Xiaoling 31.2 353 (% style="color:#037691" %)**AT+CHS=904100000** (%%) ~-~->  Fix frequency
Xiaoling 6.2 354
Xiaoling 31.2 355 (% style="color:#037691" %)**AT+NJM=0  ** (%%) ~-~->  Set the ABP mode
Xiaoling 6.2 356
Xiaoling 31.2 357 (% style="color:#037691" %)**AT+ADR=0**   (%%) ~-~->  Close ADR
Xiaoling 6.2 358
Xiaoling 31.2 359 (% style="color:#037691" %)**AT+DR=0 ** (%%) ~-~->  Fix DR=0
Kilight Cao 33.1 360 )))
Xiaoling 33.2 361
Xiaoling 6.2 362 Set up LA66 USB t work in ABP mode, use fix frequency(904100000) and fix DR0(SF10) to transmit data.
363
364
365 == 7.2 Set up LA66 Shield ==
366
Xiaoling 31.2 367
Kilight Cao 32.1 368 LA66 Shield is loaded with the firmware **[[LA66 Shield use Point to Point firmware>>url:https://www.dropbox.com/sh/els49fz9rd6fu1y/AAAt-kKIvXu1ZOK0hWysq97na?dl=0]]**, LA66 Shield as Relay needs to be configured as follows:
Xiaoling 33.2 369
Kilight Cao 33.1 370 (% class="box infomessage" %)
371 (((
Xiaoling 31.2 372 (% style="color:#037691" %)**AT+FRE=904.100,904.100**(%%)  ~-~-> TX and RX frequency set: 904100000 
Xiaoling 6.2 373
Xiaoling 31.2 374 (% style="color:#037691" %)**AT+BW=0,0**(%%)  ~-~-> TX and RX Bandwidth set: 125kHz
Xiaoling 6.2 375
Xiaoling 31.2 376 (% style="color:#037691" %)**AT+SF=10,10**(%%)  ~-~-> TX and RX Spreading Factor set: SF10(corresponding toDR=0)
Xiaoling 6.2 377
Xiaoling 31.2 378 (% style="color:#037691" %)**AT+CRC=1,1**(%%)  ~-~-> 0: CRC OFF ,1: CRC ON
Xiaoling 6.2 379
Xiaoling 31.2 380 (% style="color:#037691" %)**AT+HEADER=0,0**(%%)  ~-~-> Header Type: explicit, explicit
Xiaoling 6.2 381
Xiaoling 31.2 382 (% style="color:#037691" %)**AT+CR=1,1**(%%)  ~-~-> CR: 4/5, 4/5
Xiaoling 6.2 383
Xiaoling 31.2 384 (% style="color:#037691" %)**AT+IQ=0,0**(%%)  ~-~-> Invert IQ: 0,0
Xiaoling 6.2 385
Xiaoling 31.2 386 (% style="color:#037691" %)**AT+PREAMBLE=8,8**(%%)  ~-~-> TX and RX Preamble Length set: 8
Xiaoling 6.2 387
Xiaoling 31.2 388 (% style="color:#037691" %)**AT+SYNCWORD=1**(%%)  ~-~-> Syncword**(0: private，1: public)**
Xiaoling 6.2 389
Xiaoling 31.2 390 (% style="color:#037691" %)**AT+RXMOD=65535,1 **(%%) ~-~-> Set the Relay mode
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Xiaoling 31.2 392 (% style="color:#037691" %)**AT+WAITTIME=1000**(%%)  ~-~-> Relay wait time 1000ms
Kilight Cao 33.1 393 )))
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Xiaoling 6.2 396 == 7.3 Uplink test ==
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Xiaoling 31.2 399 Users can connect to the LA66 USB using the serial port tool and enter the (% style="color:blue" %)**AT command: AT+SENDB=01,02,8,05820802581ea0a5**
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Xiaoling 31.2 401 (% style="color:#037691" %)**Command format:  AT+SENDB=<confirn_status>,<Fport>,<data_len>,<data>**
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Xiaoling 31.2 403 [[image:1669021802668-328.png]]
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Kilight Cao 32.1 406 In addition, users can also access LA66 USB using the mobile app **[[Download Link for Android apk >>url:https://www.dropbox.com/sh/zxwx16qb777uvkz/AABE_P8coGCQ4DAC8enH4bUya?dl=0]]** (Android Version Only)
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Xiaoling 31.2 408 [[image:1669021860044-222.png]]
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410
411 == 7.4 Test result ==
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Xiaoling 6.2 414 See two duplicate messages on Gateway Traffic.
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Xiaoling 31.2 416 [[image:1669021878786-276.png]]
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Xiaoling 6.2 420 Bring LA66 USB and walk to a remote location to get the max distance. At this point,RSSi=-134 SNR=13.8, Go back 100 meters and put the LA66 Shield (Relay) in the location, Due to the following examples, there may be errors in the test in the urban area.
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Xiaoling 31.2 422 [[image:1669021889556-608.png]]
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Xiaoling 31.2 426 Without Relay, the LA66 USB can reach about 833meters.
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Xiaoling 31.2 428 [[image:1669021903207-809.png]]
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Xiaoling 31.2 432 With Relay, the LA66 USB can reach around 2km.
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Xiaoling 31.2 434 [[image:1669021922274-909.png]]
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436
437 = 8. Technical Support =
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Xiaoling 6.2 440 * Support is provided Monday to Friday, from 09:00 to 18:00 GMT+8. Due to different timezones we cannot offer live support. However, your questions will be answered as soon as possible in the before-mentioned schedule.
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Xiaoling 31.2 442 * Provide as much information as possible regarding your enquiry (product models, accurately describe your problem and steps to replicate it etc) and send a mail to [[support@dragino.com>>url:file:///D:/市场资料/说明书/LoRa/LG02/support@dragino.com]]
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Xiaoling 6.2 446 = 9. Reference =
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Xiaoling 31.2 449 **1. [[LoRaWAN official website. And Technicel document for LoRaWAN.>>url:https://lora-alliance.org/lorawan-for-developers]]**
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Xiaoling 31.2 451 **2. [[LoRa Low Energy design guide>>url:https://www.semtech.com/uploads/documents/LoraLowEnergyDesign_STD.pdf]] and [[Calculator Tool>>url:https://www.semtech.com/uploads/documents/SX1272LoRaCalculatorSetup1_1.zip]].**
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Xiaoling 31.2 453 **3. About Distance: [[LoRa Modem Design Guide>>url:https://www.semtech.com/uploads/documents/LoraDesignGuide_STD.pdf]]**
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Xiaoling 31.2 455 **4. User Manual: [[LPS8v2>>url:http://wiki.dragino.com/xwiki/bin/view/Main/User%20Manual%20for%20All%20Gateway%20models/HP0C/]], [[LA66 LoRaWAN Shield>>url:http://wiki.dragino.com/xwiki/bin/view/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LA66%20LoRaWAN%20Shield%20User%20Manual/]] , [[LA66 USB LoRaWAN Adapter>>url:http://wiki.dragino.com/xwiki/bin/view/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LA66%20USB%20LoRaWAN%20Adapter%20User%20Manual/]]**
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