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Wiki source code of LA66 LoRaWAN Module

Version 64.1 by Edwin Chen on 2022/07/02 21:03
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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 64.1 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 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 64.1 11 **LA66 **is a ready-to-use module that includes the 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 for developers to make a LoRaWAN End device. External MCU can use AT command to call LA66 and start to transmit data via the LoRaWAN protocol.
Edwin Chen 1.1 12
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Edwin Chen 64.1 14 LA66 is equipped with **TCXO crystal** which ensures the module can achieve the stable performance in extreme temperatures.
Edwin Chen 1.1 15
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Edwin Chen 64.1 17 **Each LA66 **module includes a world-unique OTAA key for LoRaWAN registration.
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Edwin Chen 6.1 21 == Specification ==
Edwin Chen 1.1 22
Edwin Chen 3.1 23 [[image:image-20220517072526-1.png]]
Edwin Chen 1.1 24
Edwin Chen 3.1 25 Input Power Range: 1.8v ~~ 3.7v
Edwin Chen 1.1 26
Edwin Chen 3.1 27 Power Consumption: < 4uA.
Edwin Chen 1.1 28
Edwin Chen 3.1 29 Frequency Range: 150 MHz ~~ 960 MHz
Edwin Chen 1.1 30
Edwin Chen 3.1 31 Maximum Power +22 dBm constant RF output
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33 High sensitivity: -148 dBm
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35 Temperature:
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37 * Storage: -55 ~~ +125℃
38 * Operating: -40 ~~ +85℃
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40 Humidity:
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42 * Storage: 5 ~~ 95% (Non-Condensing)
43 * Operating: 10 ~~ 95% (Non-Condensing)
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45 LoRa Tx Current: <90 mA at +17 dBm, 108 mA at +22 dBm
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47 LoRa Rx current: <9 mA
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49 I/O Voltage: 3.3v
Edwin Chen 5.1 50
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Edwin Chen 6.1 52 == AT Command ==
Edwin Chen 5.1 53
54 AT Command is valid over Main TXD and Main RXD. Serial Baud Rate is 9600. AT commands can be found in AT Command documents.
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Edwin Chen 6.1 57 == Pin Mapping ==
Edwin Chen 5.1 58
Xiaoling 10.2 59 [[image:image-20220523101537-1.png]]
Edwin Chen 5.1 60
Edwin Chen 6.1 61 == Land Pattern ==
Edwin Chen 5.1 62
63 [[image:image-20220517072821-2.png]]
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65
Edwin Chen 6.1 66 == Part Number ==
Edwin Chen 5.1 67
68 Part Number: **LA66-XXX**
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70 **XX**: The default frequency band
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72 * **AS923**: LoRaWAN AS923 band
73 * **AU915**: LoRaWAN AU915 band
74 * **EU433**: LoRaWAN EU433 band
75 * **EU868**: LoRaWAN EU868 band
76 * **KR920**: LoRaWAN KR920 band
77 * **US915**: LoRaWAN US915 band
78 * **IN865**: LoRaWAN IN865 band
79 * **CN470**: LoRaWAN CN470 band
Edwin Chen 6.1 80
81 = LA66 LoRaWAN Shield =
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83 LA66 LoRaWAN Shield is the Arduino Breakout PCB to fast test the features of LA66 module and turn Arduino to support LoRaWAN.
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Edwin Chen 11.1 85 == Pin Mapping & LED ==
Edwin Chen 6.1 86
Edwin Chen 11.1 87 == Example: Use AT Command to communicate with LA66 module via Arduino UNO. ==
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89 == Example: Join TTN network and send an uplink message, get downlink message. ==
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91 == Example: Log Temperature Sensor(DHT11) and send data to TTN, show it in DataCake. ==
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Edwin Chen 13.1 93 == Upgrade Firmware of LA66 LoRaWAN Shield ==
Edwin Chen 11.1 94
Herong Lu 20.1 95 === what needs to be used ===
Edwin Chen 11.1 96
Herong Lu 20.1 97 1.LA66 LoRaWAN Shield that needs to be upgraded
Edwin Chen 13.1 98
Herong Lu 20.1 99 2.Arduino
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101 3.USB TO TTL
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103 [[image:image-20220602100052-2.png]]
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105 === Wiring Schematic ===
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107 [[image:image-20220602101311-3.png]]
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109 LA66 LoRaWAN Shield  >>>>>>>>>>>>USB TTL
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111 GND  >>>>>>>>>>>>GND
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113 TXD  >>>>>>>>>>>>TXD
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115 RXD  >>>>>>>>>>>>RXD
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117 JP6 of LA66 LoRaWAN Shield needs to be connected with yellow jumper cap
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119 Connect to the PC after connecting the wires
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121 [[image:image-20220602102240-4.png]]
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123 === Upgrade steps ===
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Herong Lu 32.1 125 ==== Dial the SW1 of the LA66 LoRaWAN Shield to the ISP's location as shown in the figure below ====
Herong Lu 20.1 126
Herong Lu 32.1 127 [[image:image-20220602102824-5.png]]
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129 ==== Press the RST switch on the LA66 LoRaWAN Shield once ====
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131 [[image:image-20220602104701-12.png]]
132
133 ==== Open the upgrade application software ====
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Herong Lu 39.1 135 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/]]
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Herong Lu 32.1 137 [[image:image-20220602103227-6.png]]
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139 [[image:image-20220602103357-7.png]]
140
141 ===== Select the COM port corresponding to USB TTL =====
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143 [[image:image-20220602103844-8.png]]
144
145 ===== Select the bin file to burn =====
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147 [[image:image-20220602104144-9.png]]
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149 [[image:image-20220602104251-10.png]]
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151 [[image:image-20220602104402-11.png]]
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153 ===== Click to start the download =====
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155 [[image:image-20220602104923-13.png]]
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157 ===== The following figure appears to prove that the burning is in progress =====
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159 [[image:image-20220602104948-14.png]]
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161 ===== The following picture appears to prove that the burning is successful =====
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163 [[image:image-20220602105251-15.png]]
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Edwin Chen 6.1 165 = LA66 USB LoRaWAN Adapter =
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Edwin Chen 7.1 167 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 52.1 169 Before use, please make sure that the computer has installed the CP2102 driver
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Edwin Chen 14.1 171 == Pin Mapping & LED ==
Edwin Chen 7.1 172
Edwin Chen 11.1 173 == Example Send & Get Messages via LoRaWAN in PC ==
Edwin Chen 7.1 174
Herong Lu 58.1 175 Connect the LA66 LoRa Shield to the PC
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Herong Lu 61.1 177 [[image:image-20220602171217-1.png||height="615" width="915"]]
Herong Lu 58.1 178
179 Open the serial port tool
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181 [[image:image-20220602161617-8.png]]
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183 [[image:image-20220602161718-9.png||height="529" width="927"]]
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185 Press the reset switch RST on the LA66 LoRa Shield.
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187 The following picture appears to prove that the LA66 LoRa Shield successfully entered the network
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189 [[image:image-20220602161935-10.png]]
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191 send instructions: AT+SENDB=<confirn_status>,<Fport>,<data_len>,<data>
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193 example: AT+SENDB=01,02,8,05820802581ea0a5
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195 [[image:image-20220602162157-11.png]]
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197 Check to see if TTN received the message
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199 [[image:image-20220602162331-12.png||height="547" width="1044"]]
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Edwin Chen 11.1 201 == Example Send & Get Messages via LoRaWAN in RPi ==
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Herong Lu 52.1 203 Connect the LA66 LoRa Shield to the RPI
Edwin Chen 12.1 204
Herong Lu 61.1 205 [[image:image-20220602171233-2.png||height="592" width="881"]]
Herong Lu 43.1 206
Herong Lu 52.1 207 Log in to the RPI's terminal and connect to the serial port
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209 [[image:image-20220602153146-3.png]]
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211 Press the reset switch RST on the LA66 LoRa Shield.
212 The following picture appears to prove that the LA66 LoRa Shield successfully entered the network
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214 [[image:image-20220602154928-5.png]]
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216 send instructions: AT+SENDB=<confirn_status>,<Fport>,<data_len>,<data>
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218 example: AT+SENDB=01,02,8,05820802581ea0a5
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220 [[image:image-20220602160339-6.png]]
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222 Check to see if TTN received the message
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224 [[image:image-20220602160627-7.png||height="468" width="1013"]]
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Edwin Chen 8.1 226 === Install Minicom ===
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Herong Lu 46.1 228 Enter the following command in the RPI terminal
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230 apt update
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232 [[image:image-20220602143155-1.png]]
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234 apt install minicom
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236 [[image:image-20220602143744-2.png]]
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Herong Lu 38.1 238 === Send PC's CPU/RAM usage to TTN via script. ===
Edwin Chen 11.1 239
Herong Lu 38.1 240 ==== Take python as an example： ====
Edwin Chen 11.1 241
Herong Lu 38.1 242 ===== Preconditions: =====
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Herong Lu 62.1 244 1.LA66 USB LoRaWAN Adapter works fine
Herong Lu 38.1 245
Herong Lu 62.1 246 2.LA66 USB LoRaWAN Adapter  is registered with TTN
Herong Lu 38.1 247
248 ===== Steps for usage =====
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Herong Lu 62.1 250 1.Press the reset switch RESET on the LA66 USB LoRaWAN Adapter
Herong Lu 38.1 251
252 2.Run the script and see the TTN
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254 [[image:image-20220602115852-3.png]]
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Edwin Chen 11.1 258 == Example: LA66 USB Module got a message from LA66 LoRa Shield and send the sensor data to NodeRed. ==
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Edwin Chen 13.1 260
261 == Upgrade Firmware of LA66 USB LoRaWAN Adapter ==
Herong Lu 63.1 262
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