Wiki source code of LA66 LoRaWAN Module

Version 52.1 by Herong Lu on 2022/06/02 16:07
Show last authors
1 {{box cssClass="floatinginfobox" title="**Contents**"}}
2 {{toc/}}
3 {{/box}}
4
5 = LA66 LoRaWAN Module =
6
7 == What is LA66 LoRaWAN Module ==
8
9 **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 LoRa 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 program, create and connect your things everywhere.
10
11 **LA66 **is a ready-to-use module which includes the LoRaWAN v1.0.4 protocol. External MCU can use AT command to call LA66 and start to transmit data via the LoRaWAN protocol.
12
13 **Each LA66 **module includes a world unique OTAA key for LoRaWAN registration.
14
15
16
17 == Specification ==
18
19 [[image:image-20220517072526-1.png]]
20
21 Input Power Range: 1.8v ~~ 3.7v
22
23 Power Consumption: < 4uA.
24
25 Frequency Range: 150 MHz ~~ 960 MHz
26
27 Maximum Power +22 dBm constant RF output
28
29 High sensitivity: -148 dBm
30
31 Temperature:
32
33 * Storage: -55 ~~ +125℃
34 * Operating: -40 ~~ +85℃
35
36 Humidity:
37
38 * Storage: 5 ~~ 95% (Non-Condensing)
39 * Operating: 10 ~~ 95% (Non-Condensing)
40
41 LoRa Tx Current: <90 mA at +17 dBm, 108 mA at +22 dBm
42
43 LoRa Rx current: <9 mA
44
45 I/O Voltage: 3.3v
46
47
48 == AT Command ==
49
50 AT Command is valid over Main TXD and Main RXD. Serial Baud Rate is 9600. AT commands can be found in AT Command documents.
51
52
53 == Pin Mapping ==
54
55 [[image:image-20220523101537-1.png]]
56
57 == Land Pattern ==
58
59 [[image:image-20220517072821-2.png]]
60
61
62 == Part Number ==
63
64 Part Number: **LA66-XXX**
65
66 **XX**: The default frequency band
67
68 * **AS923**: LoRaWAN AS923 band
69 * **AU915**: LoRaWAN AU915 band
70 * **EU433**: LoRaWAN EU433 band
71 * **EU868**: LoRaWAN EU868 band
72 * **KR920**: LoRaWAN KR920 band
73 * **US915**: LoRaWAN US915 band
74 * **IN865**: LoRaWAN IN865 band
75 * **CN470**: LoRaWAN CN470 band
76
77 = LA66 LoRaWAN Shield =
78
79 LA66 LoRaWAN Shield is the Arduino Breakout PCB to fast test the features of LA66 module and turn Arduino to support LoRaWAN.
80
81 == Pin Mapping & LED ==
82
83 == Example: Use AT Command to communicate with LA66 module via Arduino UNO. ==
84
85 == Example: Join TTN network and send an uplink message, get downlink message. ==
86
87 == Example: Log Temperature Sensor(DHT11) and send data to TTN, show it in DataCake. ==
88
89 == Upgrade Firmware of LA66 LoRaWAN Shield ==
90
91 === what needs to be used ===
92
93 1.LA66 LoRaWAN Shield that needs to be upgraded
94
95 2.Arduino
96
97 3.USB TO TTL
98
99 [[image:image-20220602100052-2.png]]
100
101 === Wiring Schematic ===
102
103 [[image:image-20220602101311-3.png]]
104
105 LA66 LoRaWAN Shield  >>>>>>>>>>>>USB TTL
106
107 GND  >>>>>>>>>>>>GND
108
109 TXD  >>>>>>>>>>>>TXD
110
111 RXD  >>>>>>>>>>>>RXD
112
113 JP6 of LA66 LoRaWAN Shield needs to be connected with yellow jumper cap
114
115 Connect to the PC after connecting the wires
116
117 [[image:image-20220602102240-4.png]]
118
119 === Upgrade steps ===
120
121 ==== Dial the SW1 of the LA66 LoRaWAN Shield to the ISP's location as shown in the figure below ====
122
123 [[image:image-20220602102824-5.png]]
124
125 ==== Press the RST switch on the LA66 LoRaWAN Shield once ====
126
127 [[image:image-20220602104701-12.png]]
128
129 ==== Open the upgrade application software ====
130
131 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/]]
132
133 [[image:image-20220602103227-6.png]]
134
135 [[image:image-20220602103357-7.png]]
136
137 ===== Select the COM port corresponding to USB TTL =====
138
139 [[image:image-20220602103844-8.png]]
140
141 ===== Select the bin file to burn =====
142
143 [[image:image-20220602104144-9.png]]
144
145 [[image:image-20220602104251-10.png]]
146
147 [[image:image-20220602104402-11.png]]
148
149 ===== Click to start the download =====
150
151 [[image:image-20220602104923-13.png]]
152
153 ===== The following figure appears to prove that the burning is in progress =====
154
155 [[image:image-20220602104948-14.png]]
156
157 ===== The following picture appears to prove that the burning is successful =====
158
159 [[image:image-20220602105251-15.png]]
160
161 = LA66 USB LoRaWAN Adapter =
162
163 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.
164
165 Before use, please make sure that the computer has installed the CP2102 driver
166
167 == Pin Mapping & LED ==
168
169 == Example Send & Get Messages via LoRaWAN in PC ==
170
171 == Example Send & Get Messages via LoRaWAN in RPi ==
172
173 Connect the LA66 LoRa Shield to the RPI
174
175 [[image:image-20220602153333-4.png]]
176
177 Log in to the RPI's terminal and connect to the serial port
178
179 [[image:image-20220602153146-3.png]]
180
181 Press the reset switch RST on the LA66 LoRa Shield.
182 The following picture appears to prove that the LA66 LoRa Shield successfully entered the network
183
184 [[image:image-20220602154928-5.png]]
185
186 send instructions: AT+SENDB=<confirn_status>,<Fport>,<data_len>,<data>
187
188 example: AT+SENDB=01,02,8,05820802581ea0a5
189
190 [[image:image-20220602160339-6.png]]
191
192 Check to see if TTN received the message
193
194 [[image:image-20220602160627-7.png||height="468" width="1013"]]
195
196 === Install Minicom ===
197
198 Enter the following command in the RPI terminal
199
200 apt update
201
202 [[image:image-20220602143155-1.png]]
203
204 apt install minicom
205
206 [[image:image-20220602143744-2.png]]
207
208 === Use AT Command to send an uplink message. ===
209
210 === Send PC's CPU/RAM usage to TTN via script. ===
211
212 ==== Take python as an example： ====
213
214 ===== Preconditions: =====
215
216 1.LA66 LoRa Shield works fine
217
218 2.LA66 LoRa Shield is registered with TTN
219
220 ===== Steps for usage =====
221
222 1.After connecting the line, connect it to the PC, turn SW1 to FLASH, and press the RST switch. As shown in the figure below
223
224 [[image:image-20220602114148-1.png]]
225
226 2.Run the script and see the TTN
227
228 [[image:image-20220602115852-3.png]]
229
230
231
232 == Example: LA66 USB Module got a message from LA66 LoRa Shield and send the sensor data to NodeRed. ==
233
234
235 == Upgrade Firmware of LA66 USB LoRaWAN Adapter ==

Applications

Navigation

Copyright ©2010-2022 Dragino Technology Co., LTD. All rights reserved
Dragino Wiki v2.0