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Wiki source code of LA66 LoRaWAN Module

Version 65.1 by Edwin Chen on 2022/07/02 23:30
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Edwin Chen 1.1 1 {{box cssClass="floatinginfobox" title="**Contents**"}}
2 {{toc/}}
3 {{/box}}
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Edwin Chen 6.1 5 = LA66 LoRaWAN Module =
Edwin Chen 1.1 6
Edwin Chen 6.1 7 == What is LA66 LoRaWAN Module ==
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Edwin Chen 65.1 9 (% style="color:blue" %)**Dragino LA66**(%%) is a small wireless LoRaWAN module that offers a very compelling mix of long-range, low power consumption, and secure data transmission. It is designed to facilitate developers to quickly deploy industrial-level LoRaWAN and IoT solutions. It helps users to turn the idea into a practical application and make the Internet of Things a reality. It is easy to create and connect your things everywhere.
Edwin Chen 1.1 10
Edwin Chen 65.1 11 (% style="color:blue" %)**LA66**(%%) is a ready-to-use module that includes the (% style="color:blue" %)**LoRaWAN v1.0.4 protocol**(%%). The LoRaWAN stack used in LA66 is used in more than 1 million LoRaWAN End Devices deployed world widely. This mature LoRaWAN stack greatly reduces the risk to make stable LoRaWAN Sensors to support different LoRaWAN servers and different countries' standards. External MCU can use AT command to call LA66 and start to transmit data via the LoRaWAN protocol.
Edwin Chen 1.1 12
Edwin Chen 65.1 13 Each LA66 module includes a (% style="color:blue" %)**world-unique OTAA key**(%%) for LoRaWAN registration.
Edwin Chen 1.1 14
Edwin Chen 65.1 15 Besides the support of the LoRaWAN protocol, LA66 also supports (% style="color:blue" %)**open-source peer-to-peer LoRa Protocol**(%%) for the none-LoRaWAN application.
Edwin Chen 1.1 16
Edwin Chen 65.1 17 LA66 is equipped with (% style="color:blue" %)**TCXO crystal**(%%) which ensures the module can achieve stable performance in extreme temperatures.
Edwin Chen 1.1 18
Edwin Chen 65.1 19 == Features ==
Edwin Chen 64.1 20
21
Edwin Chen 6.1 22 == Specification ==
Edwin Chen 1.1 23
Edwin Chen 3.1 24 [[image:image-20220517072526-1.png]]
Edwin Chen 1.1 25
Edwin Chen 3.1 26 Input Power Range: 1.8v ~~ 3.7v
Edwin Chen 1.1 27
Edwin Chen 3.1 28 Power Consumption: < 4uA.
Edwin Chen 1.1 29
Edwin Chen 3.1 30 Frequency Range: 150 MHz ~~ 960 MHz
Edwin Chen 1.1 31
Edwin Chen 3.1 32 Maximum Power +22 dBm constant RF output
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34 High sensitivity: -148 dBm
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36 Temperature:
37
38 * Storage: -55 ~~ +125℃
39 * Operating: -40 ~~ +85℃
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41 Humidity:
42
43 * Storage: 5 ~~ 95% (Non-Condensing)
44 * Operating: 10 ~~ 95% (Non-Condensing)
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46 LoRa Tx Current: <90 mA at +17 dBm, 108 mA at +22 dBm
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48 LoRa Rx current: <9 mA
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50 I/O Voltage: 3.3v
Edwin Chen 5.1 51
52
Edwin Chen 6.1 53 == AT Command ==
Edwin Chen 5.1 54
55 AT Command is valid over Main TXD and Main RXD. Serial Baud Rate is 9600. AT commands can be found in AT Command documents.
56
57
Edwin Chen 6.1 58 == Pin Mapping ==
Edwin Chen 5.1 59
Xiaoling 10.2 60 [[image:image-20220523101537-1.png]]
Edwin Chen 5.1 61
Edwin Chen 6.1 62 == Land Pattern ==
Edwin Chen 5.1 63
64 [[image:image-20220517072821-2.png]]
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66
Edwin Chen 6.1 67 == Part Number ==
Edwin Chen 5.1 68
69 Part Number: **LA66-XXX**
70
71 **XX**: The default frequency band
72
73 * **AS923**: LoRaWAN AS923 band
74 * **AU915**: LoRaWAN AU915 band
75 * **EU433**: LoRaWAN EU433 band
76 * **EU868**: LoRaWAN EU868 band
77 * **KR920**: LoRaWAN KR920 band
78 * **US915**: LoRaWAN US915 band
79 * **IN865**: LoRaWAN IN865 band
80 * **CN470**: LoRaWAN CN470 band
Edwin Chen 6.1 81
82 = LA66 LoRaWAN Shield =
83
84 LA66 LoRaWAN Shield is the Arduino Breakout PCB to fast test the features of LA66 module and turn Arduino to support LoRaWAN.
85
Edwin Chen 11.1 86 == Pin Mapping & LED ==
Edwin Chen 6.1 87
Edwin Chen 11.1 88 == Example: Use AT Command to communicate with LA66 module via Arduino UNO. ==
89
90 == Example: Join TTN network and send an uplink message, get downlink message. ==
91
92 == Example: Log Temperature Sensor(DHT11) and send data to TTN, show it in DataCake. ==
93
Edwin Chen 13.1 94 == Upgrade Firmware of LA66 LoRaWAN Shield ==
Edwin Chen 11.1 95
Herong Lu 20.1 96 === what needs to be used ===
Edwin Chen 11.1 97
Herong Lu 20.1 98 1.LA66 LoRaWAN Shield that needs to be upgraded
Edwin Chen 13.1 99
Herong Lu 20.1 100 2.Arduino
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102 3.USB TO TTL
103
104 [[image:image-20220602100052-2.png]]
105
106 === Wiring Schematic ===
107
108 [[image:image-20220602101311-3.png]]
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110 LA66 LoRaWAN Shield  >>>>>>>>>>>>USB TTL
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112 GND  >>>>>>>>>>>>GND
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114 TXD  >>>>>>>>>>>>TXD
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116 RXD  >>>>>>>>>>>>RXD
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118 JP6 of LA66 LoRaWAN Shield needs to be connected with yellow jumper cap
119
120 Connect to the PC after connecting the wires
121
122 [[image:image-20220602102240-4.png]]
123
124 === Upgrade steps ===
125
Herong Lu 32.1 126 ==== Dial the SW1 of the LA66 LoRaWAN Shield to the ISP's location as shown in the figure below ====
Herong Lu 20.1 127
Herong Lu 32.1 128 [[image:image-20220602102824-5.png]]
129
130 ==== Press the RST switch on the LA66 LoRaWAN Shield once ====
131
132 [[image:image-20220602104701-12.png]]
133
134 ==== Open the upgrade application software ====
135
Herong Lu 39.1 136 Software download link:  [[https:~~/~~/www.dragino.com/downloads/index.php?dir=LSN50-LoRaST/Utility/LSN50N/>>https://www.dragino.com/downloads/index.php?dir=LSN50-LoRaST/Utility/LSN50N/]]
137
Herong Lu 32.1 138 [[image:image-20220602103227-6.png]]
139
140 [[image:image-20220602103357-7.png]]
141
142 ===== Select the COM port corresponding to USB TTL =====
143
144 [[image:image-20220602103844-8.png]]
145
146 ===== Select the bin file to burn =====
147
148 [[image:image-20220602104144-9.png]]
149
150 [[image:image-20220602104251-10.png]]
151
152 [[image:image-20220602104402-11.png]]
153
154 ===== Click to start the download =====
155
156 [[image:image-20220602104923-13.png]]
157
158 ===== The following figure appears to prove that the burning is in progress =====
159
160 [[image:image-20220602104948-14.png]]
161
162 ===== The following picture appears to prove that the burning is successful =====
163
164 [[image:image-20220602105251-15.png]]
165
Edwin Chen 6.1 166 = LA66 USB LoRaWAN Adapter =
167
Edwin Chen 7.1 168 LA66 USB LoRaWAN Adapter is the USB Adapter for LA66, it combines a USB TTL Chip and LA66 module which can easy to test the LoRaWAN feature by using PC or embedded device which has USB Interface.
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Herong Lu 52.1 170 Before use, please make sure that the computer has installed the CP2102 driver
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Edwin Chen 14.1 172 == Pin Mapping & LED ==
Edwin Chen 7.1 173
Edwin Chen 11.1 174 == Example Send & Get Messages via LoRaWAN in PC ==
Edwin Chen 7.1 175
Herong Lu 58.1 176 Connect the LA66 LoRa Shield to the PC
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Herong Lu 61.1 178 [[image:image-20220602171217-1.png||height="615" width="915"]]
Herong Lu 58.1 179
180 Open the serial port tool
181
182 [[image:image-20220602161617-8.png]]
183
184 [[image:image-20220602161718-9.png||height="529" width="927"]]
185
186 Press the reset switch RST on the LA66 LoRa Shield.
187
188 The following picture appears to prove that the LA66 LoRa Shield successfully entered the network
189
190 [[image:image-20220602161935-10.png]]
191
192 send instructions: AT+SENDB=<confirn_status>,<Fport>,<data_len>,<data>
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194 example: AT+SENDB=01,02,8,05820802581ea0a5
195
196 [[image:image-20220602162157-11.png]]
197
198 Check to see if TTN received the message
199
200 [[image:image-20220602162331-12.png||height="547" width="1044"]]
201
Edwin Chen 11.1 202 == Example Send & Get Messages via LoRaWAN in RPi ==
203
Herong Lu 52.1 204 Connect the LA66 LoRa Shield to the RPI
Edwin Chen 12.1 205
Herong Lu 61.1 206 [[image:image-20220602171233-2.png||height="592" width="881"]]
Herong Lu 43.1 207
Herong Lu 52.1 208 Log in to the RPI's terminal and connect to the serial port
209
210 [[image:image-20220602153146-3.png]]
211
212 Press the reset switch RST on the LA66 LoRa Shield.
213 The following picture appears to prove that the LA66 LoRa Shield successfully entered the network
214
215 [[image:image-20220602154928-5.png]]
216
217 send instructions: AT+SENDB=<confirn_status>,<Fport>,<data_len>,<data>
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219 example: AT+SENDB=01,02,8,05820802581ea0a5
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221 [[image:image-20220602160339-6.png]]
222
223 Check to see if TTN received the message
224
225 [[image:image-20220602160627-7.png||height="468" width="1013"]]
226
Edwin Chen 8.1 227 === Install Minicom ===
228
Herong Lu 46.1 229 Enter the following command in the RPI terminal
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231 apt update
232
233 [[image:image-20220602143155-1.png]]
234
235 apt install minicom
236
237 [[image:image-20220602143744-2.png]]
238
Herong Lu 38.1 239 === Send PC's CPU/RAM usage to TTN via script. ===
Edwin Chen 11.1 240
Herong Lu 38.1 241 ==== Take python as an example： ====
Edwin Chen 11.1 242
Herong Lu 38.1 243 ===== Preconditions: =====
244
Herong Lu 62.1 245 1.LA66 USB LoRaWAN Adapter works fine
Herong Lu 38.1 246
Herong Lu 62.1 247 2.LA66 USB LoRaWAN Adapter  is registered with TTN
Herong Lu 38.1 248
249 ===== Steps for usage =====
250
Herong Lu 62.1 251 1.Press the reset switch RESET on the LA66 USB LoRaWAN Adapter
Herong Lu 38.1 252
253 2.Run the script and see the TTN
254
255 [[image:image-20220602115852-3.png]]
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257
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Edwin Chen 11.1 259 == Example: LA66 USB Module got a message from LA66 LoRa Shield and send the sensor data to NodeRed. ==
260
Edwin Chen 13.1 261
262 == Upgrade Firmware of LA66 USB LoRaWAN Adapter ==
Herong Lu 63.1 263
264