Dragino LA66 USB Adapater V2 User Manual

Dragino LA66 USB Adapater V2

Product Information

Specifications

• Product Name: LA66 USB Adapter V2
• Unique Feature: World-unique OTAA key for LoRaWAN registration
• Supported Protocols: LoRaWAN, open-source peer-to-peer LoRa Protocol
• Crystal: TCXO crystal for stable performance in extreme temperatures

Product Usage Instructions

• Overview
  The LA66 USB Adapter V2 is a versatile module designed for LoRaWAN and NB-IoT end nodes. It comes with a unique OTAA key for LoRaWAN registration and supports both the LoRaWAN protocol and open-source peer-to-peer LoRa Protocol.
• Features
  The LA66 module is equipped with a TCXO crystal that ensures stable performance even in extreme temperatures. This feature makes it suitable for various environmental conditions.
• Specifications
  Ensure to use the LA66 USB Adapter V2 within the recommended temperature range for optimal performance. Connect the adapter to your device following the provided instructions for seamless integration.

Overview

• LA66 USB Adapater V2 is designed to fast turn USB devices to support LoRaWAN wireless features. It combines a CP2102 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.
• LA66 is a ready-to-use module that includes the LoRaWAN v1.0.3 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

• LoRaWAN USB adapter base on LA66 LoRaWAN module
• Ultra-long RF range
• Support LoRaWAN v1.0.3 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
• Open Source Mobile App for LoRaWAN signal detect and GPS tracking.

Specification

• CPU: 32-bit 48 MHz
• Flash: 256KB
• RAM: 64KB
• Input Power Range: 5v
• Frequency Range:
  • LORA： 904.6-923.3MHz
• Hybrid System: 902.5-914.7MHz
• Maximum Power constant RF output
  • Lora: 8.26dBm, Hybrid System: 8.18dBm
  • 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

Press the reset switch RST on the LA66 USB Adapater V2 to reset it. The following picture appears to prove that the LA66 USB Adapater V2 successfully Join the LoRaWAN network

See Uplink Command
Command format:  AT+SENDB=<confirn_status>,<Fport>,<data_len>,<data> example: AT+SENDB=01,02,8,05820802581ea0a5

Check to see if TTN received the message

Example: How to join helium

1. Create a new device.
2. Save the device after filling in the necessary information.
3. Network successfully.
4. Send uplink using command

Example: Send PC’s CPU/RAM usage to TTN via python

• Use python as an example：https://github.com/dragino/LA66/blob/main/Send_information_to_TTN_WindosPC.py
• (Raspberry Pi example: https://github.com/dragino/LA66/blob/main/Send_information_to_TTN_Raspberry%20Pi.py)

Preconditions:

1. LA66 USB Adapater V2 works fine
2. LA66 USB Adapater V2  is registered with TTN

Steps for usage:

1. Press the reset switch RESET on the LA66 USB Adapater V2
2. Add decoder on TTN
3. Run the python script in PC and see the TTN

Example: Send & Get Messages via LoRaWAN in RPi
Assume user already input the LA66 USB Adapater V2 OTAA Keys in TTN and there is already TTN network coverage.

1. Connect the LA66 USB Adapater V2 to the Raspberry Pi
2. Press the reset switch RST on the LA66 USB Adapater V2.
   The following picture appears to prove that the LA66 USB Adapater V2 successfully entered the network.
3. Send Uplink message
   • Format: AT+SENDB=<confirn_status>,<Fport>,<data_len>,<data>
   • example: AT+SENDB=01,02,8,05820802581ea0a5

Check to see if TTN received the message

Example: Use of LA66 USB Adapater V2 and mobile APP 1.9.
Hardware and Software Connection

Overview：DRAGINO-LA66-APP is an Open Source mobile APP for LA66 USB Adapater V2. DRAGINO-LA66-APP has below features:

• Send real-time location information of mobile phone to LoRaWAN network.
• Check LoRaWAN network signal strengh.
• Manually send messages to LoRaWAN network.

Hardware Connection:
A USB to Type-C adapter is needed to connect to a Mobile phone.

Note: The package of LA66 USB adapter already includes this USB Type-C adapter.

Block Explain:

1. Display LA66 USB LoRaWAN Module connection status
2. Check and reconnect
3. Turn send timestamps on or off
4. Display LoRaWan connection status
5. Check LoRaWan connection status
6. The RSSI value of the node when the ACK is received
7. Node’s Signal Strength Icon
8. Configure Location Uplink Interval
9. AT command input box
10. Send Button: Send input box info to LA66 USB Adapter
11. Output Log from LA66 USB adapter
12. clear log button
13. exit button

LA66 USB LoRaWAN Module not connected:

• Open Node-RED,And import the JSON file to generate the flow Sample JSON file please go to this link to download.
• For the usage of Node-RED, please refer to: http://wiki.dragino.com/xwiki/bin/view/Main/Node-RED/
• After see LoRaWAN Online, walk around and the APP will keep sending location info to LoRaWAN server and then to the Node Red.
• LA66–node-red–decoder:dragino-end-node-decoder/Node-RED at main · dragino/dragino-end-node-decoder · GitHub

Open the Upgrade tool (Tremo Programmer) in PC and Upgrade

1. Software download link: https://www.dropbox.com/sh/j0qyc7a9ejit7jk/AACtx2tK4gEv6YFXMIVUM4dLa?dl=0
2.  Select the COM port corresponding to USB TTL
3. Select the bin file to burn
4. Click to start the download
5. Check update process
6. The following picture shows that the burning is successful

LA66V2 Update method
Firmware download（Please select withbootloader version）:
Firmware – Dropbox

Firmware update method:
Please refer to this link http://wiki.dragino.com/xwiki/bin/view/Main/UART%20Access%20for%20LoRa%20ST%20v4%20base%20model/#H3.2.1UpdateafirmwareviaDraginoSensorManagerUtility.exe

Compile and Upload Code to ASR6601 Platform

Order Info
Part Number: LA66 USB Adapater V2-XXXXXX: 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

Reference

• Hardware Design File for LA66 USB Adapater V2 : Download
• Mobile Phone App Source Code: Download.

FCC Statement

FCC Caution:
Any Changes or modifications not expressly approved by the party responsible for compliance could void the user’s authority to operate the equipment.
This device complies with part 15 of the FCC Rules. Operation is subject to the following two conditions: (1) This device may not cause harmful interference, and (2) this device must accept any interference received, including interference that may cause undesired operation.

IMPORTANT NOTE:
Note: This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates, uses and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference will not occur in a particular installation. If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one or more of the following measures:

• Reorient or relocate the receiving antenna.
• Increase the separation between the equipment and receiver.
• Connect the equipment into an outlet on a circuit different from that to which the receiver is connected.
• Consult the dealer or an experienced radio/TV technician for help.

FCC Radiation Exposure Statement: 
This equipment complies with FCC radiation exposure limits set forth for an uncontrolled environment.

FAQ

How to Compile Source Code for LA66?
Compile and Upload Code to ASR6601 Platform： Instruction

Where to find Peer-to-Peer firmware of LA66?
Instruction for LA66 Peer to Peer firmware: Instruction

 My device keeps showing invalid credentials, the device goes into low-power mode
Set the AT+COMMAND: AT+UUID=666666666666

 How to use external antenna via ipex connector?
You need to remove the spring antenna first, and also remove the resistor and capacitor. Connect external antenna.

Documents / Resources

Dragino LA66 USB Adapater V2 [pdf] User Manual LA66-V2, ZHZLA66-V2, ZHZLA66V2, la66 v2, LA66 USB Adapater V2, LA66, USB Adapater V2, Adapater V2, V2

References

• Node-RED_Install and Use - DRAGINO
• GitHub - dragino/LA66: LoRaWAN Module
• User Manual