Wiki source code of LA66 LoRaWAN Module

Version 43.1 by Herong Lu on 2022/06/02 14:00
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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 == Pin Mapping & LED ==
166
167 == Example Send & Get Messages via LoRaWAN in PC ==
168
169 == Example Send & Get Messages via LoRaWAN in RPi ==
170
171 === Install USB Driver ===
172
173 Download Link:[[click here>>attach:CP210x_Universal_Windows_Driver.zip]]
174
175 === Install Minicom ===
176
177 === Use AT Command to send an uplink message. ===
178
179 === Send PC's CPU/RAM usage to TTN via script. ===
180
181 ==== Take python as an example： ====
182
183 ===== Preconditions: =====
184
185 1.LA66 LoRa Shield works fine
186
187 2.LA66 LoRa Shield is registered with TTN
188
189 ===== Steps for usage =====
190
191 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
192
193 [[image:image-20220602114148-1.png]]
194
195 2.Run the script and see the TTN
196
197 [[image:image-20220602115852-3.png]]
198
199
200
201 == Example: LA66 USB Module got a message from LA66 LoRa Shield and send the sensor data to NodeRed. ==
202
203
204 == Upgrade Firmware of LA66 USB LoRaWAN Adapter ==

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