LA66 LoRaWAN Module

Version 73.1 by Edwin Chen on 2022/07/03 00:12
Contents

LA66 LoRaWAN Module

What is LA66 LoRaWAN Module

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.

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 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.

Each LA66 module includes a world-unique OTAA key for LoRaWAN registration.

Besides the support of the LoRaWAN protocol, LA66 also supports open-source peer-to-peer LoRa Protocol for the none-LoRaWAN application. 

LA66 is equipped with TCXO crystal which ensures the module can achieve stable performance in extreme temperatures.

Features

  • Support LoRaWAN v1.0.4 protocol
  • Support peer-to-peer protocol
  • TCXO crystal to ensure RF performance on low temperature
  • SMD Antenna pad and i-pex antenna connector
  • Available in different frequency LoRaWAN frequency bands.
  • World-wide unique OTAA keys.
  • AT Command via UART-TTL interface
  • Firmware upgradable via UART interface
  • Ultra-long RF range

Specification

  • CPU: 32-bit 48 MHz
  • Flash: 256KB
  • RAM: 64KB
  • Input Power Range: 1.8v ~ 3.7v
  • Power Consumption: < 4uA.
  • Frequency Range: 150 MHz ~ 960 MHz
  • Maximum Power +22 dBm constant RF output
  • High sensitivity: -148 dBm
  • Temperature:
    • Storage: -55 ~ +125℃
    • Operating: -40 ~ +85℃
  • Humidity:
    • Storage: 5 ~ 95% (Non-Condensing)
    • Operating: 10 ~ 95% (Non-Condensing)
  • LoRa Tx Current: <90 mA at +17 dBm, 108 mA at +22 dBm
  • LoRa Rx current: <9 mA
  • I/O Voltage: 3.3v

AT Command

AT Command is valid over Main TXD and Main RXD. Serial Baud Rate is 9600. AT commands can be found in AT Command documents.

Dimension

image-20220517072526-1.png

Pin Mapping

image-20220523101537-1.png

Land Pattern

image-20220517072821-2.png

Order Info

Part Number: LA66-XXX

XX: The default frequency band

  • AS923: LoRaWAN AS923 band
  • AU915: LoRaWAN AU915 band
  • EU433: LoRaWAN EU433 band
  • EU868: LoRaWAN EU868 band
  • KR920: LoRaWAN KR920 band
  • US915: LoRaWAN US915 band
  • IN865: LoRaWAN IN865 band
  • CN470: LoRaWAN CN470 band
  • PP: Peer to Peer LoRa Protocol

LA66 LoRaWAN Shield

Overview

LA66 LoRaWAN Shield is the Arduino shield base on LA66. Users can use LA66 LoRaWAN Shield to rapidly add LoRaWAN or peer-to-peer LoRa wireless function to  Arduino projects.

Features

  • Arduino Shield base on LA66 LoRaWAN module
  • Support LoRaWAN v1.0.4 protocol
  • Support peer-to-peer protocol
  • TCXO crystal to ensure RF performance on low temperature
  • SMA connector
  • Available in different frequency LoRaWAN frequency bands.
  • World-wide unique OTAA keys.
  • AT Command via UART-TTL interface
  • Firmware upgradable via UART interface
  • Ultra-long RF range

Specification

  • CPU: 32-bit 48 MHz
  • Flash: 256KB
  • RAM: 64KB
  • Input Power Range: 1.8v ~ 3.7v
  • Power Consumption: < 4uA.
  • Frequency Range: 150 MHz ~ 960 MHz
  • Maximum Power +22 dBm constant RF output
  • High sensitivity: -148 dBm
  • Temperature:
    • Storage: -55 ~ +125℃
    • Operating: -40 ~ +85℃
  • Humidity:
    • Storage: 5 ~ 95% (Non-Condensing)
    • Operating: 10 ~ 95% (Non-Condensing)
  • LoRa Tx Current: <90 mA at +17 dBm, 108 mA at +22 dBm
  • LoRa Rx current: <9 mA
  • I/O Voltage: 3.3v

Pin Mapping & LED

Example: Use AT Command to communicate with LA66 module via Arduino UNO.

Example: Join TTN network and send an uplink message, get downlink message.

Example: Log Temperature Sensor(DHT11) and send data to TTN, show it in DataCake.

Upgrade Firmware of LA66 LoRaWAN Shield

what needs to be used

1.LA66 LoRaWAN Shield that needs to be upgraded

2.Arduino

3.USB TO TTL

image-20220602100052-2.png

Wiring Schematic

image-20220602101311-3.png

LA66 LoRaWAN Shield  >>>>>>>>>>>>USB TTL

GND                               >>>>>>>>>>>>GND

TXD                                >>>>>>>>>>>>TXD

RXD                                >>>>>>>>>>>>RXD

JP6 of LA66 LoRaWAN Shield needs to be connected with yellow jumper cap

Connect to the PC after connecting the wires

image-20220602102240-4.png

Upgrade steps

Dial the SW1 of the LA66 LoRaWAN Shield to the ISP's location as shown in the figure below

image-20220602102824-5.png

Press the RST switch on the LA66 LoRaWAN Shield once

image-20220602104701-12.png

Open the upgrade application software

Software download link:  https://www.dragino.com/downloads/index.php?dir=LSN50-LoRaST/Utility/LSN50N/

image-20220602103227-6.png

image-20220602103357-7.png

Select the COM port corresponding to USB TTL

image-20220602103844-8.png

Select the bin file to burn

image-20220602104144-9.png

image-20220602104251-10.png

image-20220602104402-11.png

Click to start the download

image-20220602104923-13.png

The following figure appears to prove that the burning is in progress

image-20220602104948-14.png

The following picture appears to prove that the burning is successful

image-20220602105251-15.png

Order Info

Part Number: LA66-LoRaWAN-Shield-XXX

XX: The default frequency band

  • AS923: LoRaWAN AS923 band
  • AU915: LoRaWAN AU915 band
  • EU433: LoRaWAN EU433 band
  • EU868: LoRaWAN EU868 band
  • KR920: LoRaWAN KR920 band
  • US915: LoRaWAN US915 band
  • IN865: LoRaWAN IN865 band
  • CN470: LoRaWAN CN470 band
  • PP: Peer to Peer LoRa Protocol

Package Info

  • LA66 LoRaWAN Shield x 1
  • RF Antenna x 1

LA66 USB LoRaWAN Adapter

Overview

LA66 USB LoRaWAN Adapter is designed to fast turn USB devices to support LoRaWAN wireless features. It combines a CP2101 USB TTL Chip and LA66 LoRaWAN module which can easy to add LoRaWAN wireless feature to PC / Mobile phone or an embedded device that has USB Interface.

Features

  • LoRaWAN USB adapter base on LA66 LoRaWAN module
  • Ultra-long RF range
  • Support LoRaWAN v1.0.4 protocol
  • Support peer-to-peer protocol
  • TCXO crystal to ensure RF performance on low temperature
  • Spring RF antenna
  • Available in different frequency LoRaWAN frequency bands.
  • World-wide unique OTAA keys.
  • AT Command via UART-TTL interface
  • Firmware upgradable via UART interface

Specification

  • CPU: 32-bit 48 MHz
  • Flash: 256KB
  • RAM: 64KB
  • Input Power Range: 5v
  • Frequency Range: 150 MHz ~ 960 MHz
  • Maximum Power +22 dBm constant RF output
  • High sensitivity: -148 dBm
  • Temperature:
    • Storage: -55 ~ +125℃
    • Operating: -40 ~ +85℃
  • Humidity:
    • Storage: 5 ~ 95% (Non-Condensing)
    • Operating: 10 ~ 95% (Non-Condensing)
  • LoRa Tx Current: <90 mA at +17 dBm, 108 mA at +22 dBm
  • LoRa Rx current: <9 mA

Pin Mapping & LED

Example Send & Get Messages via LoRaWAN in PC

Connect the LA66 LoRa Shield to the PC

image-20220602171217-1.png

Open the serial port tool

image-20220602161617-8.png

image-20220602161718-9.png

Press the reset switch RST on the LA66 LoRa Shield.

The following picture appears to prove that the LA66 LoRa Shield successfully entered the network

image-20220602161935-10.png

send instructions: AT+SENDB=<confirn_status>,<Fport>,<data_len>,<data>

example: AT+SENDB=01,02,8,05820802581ea0a5

image-20220602162157-11.png

Check to see if TTN received the message

image-20220602162331-12.png

Example Send & Get Messages via LoRaWAN in RPi

Connect the LA66 LoRa Shield to the RPI

image-20220602171233-2.png

Log in to the RPI's terminal and connect to the serial port

image-20220602153146-3.png

Press the reset switch RST on the LA66 LoRa Shield.
The following picture appears to prove that the LA66 LoRa Shield successfully entered the network

image-20220602154928-5.png

send instructions: AT+SENDB=<confirn_status>,<Fport>,<data_len>,<data>

example: AT+SENDB=01,02,8,05820802581ea0a5

image-20220602160339-6.png

Check to see if TTN received the message

image-20220602160627-7.png

Install Minicom

Enter the following command in the RPI terminal

apt update

image-20220602143155-1.png

apt install minicom

image-20220602143744-2.png

Send PC's CPU/RAM usage to TTN via script.

Take python as an example：

Preconditions:

1.LA66 USB LoRaWAN Adapter works fine

2.LA66 USB LoRaWAN Adapter  is registered with TTN

Steps for usage

1.Press the reset switch RESET on the LA66 USB LoRaWAN Adapter

2.Run the script and see the TTN

image-20220602115852-3.png

Example: LA66 USB Module got a message from LA66 LoRa Shield and send the sensor data to NodeRed.

Upgrade Firmware of LA66 USB LoRaWAN Adapter

Order Info

Part Number: LA66-USB-LoRaWAN-Adapter-XXX

XX: The default frequency band

  • AS923: LoRaWAN AS923 band
  • AU915: LoRaWAN AU915 band
  • EU433: LoRaWAN EU433 band
  • EU868: LoRaWAN EU868 band
  • KR920: LoRaWAN KR920 band
  • US915: LoRaWAN US915 band
  • IN865: LoRaWAN IN865 band
  • CN470: LoRaWAN CN470 band
  • PP: Peer to Peer LoRa Protocol

Package Info

  • LA66 USB LoRaWAN Adapter x 1

 

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