LoMesh

A mesh-capable LoRa® data radio with support for AT commands & MODBUS

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Operating over the 915 MHz, license-free Industrial, Scientific and Medical (ISM) bands, LoMesh leverages the spread-spectrum modulation of LoRa® to achieve reliable, long-range, high-sensitivity communication—over a multi-hop mesh—even when faced with significant RF or physical interference. You can use basic AT commands or a MODBUS register map to configure and control its complete wireless mesh stack. This combination of simplicity and flexibility is key to reducing development and deployment times for projects that depend on robust communication in harsh environments.

LoMesh’s modem—which, thanks to its RS485 interface, can talk to any device with a serial port—will arrive factory-provisioned for guaranteed out-of-the-box connectivity but with full support for custom configurations.

Simplify Industrial Wireless Communication & Automation

Whether you are designing an Internet of Things (IoT) product, constructing a smart home, rolling out a sensor network, developing a building automation solution, or just trying to make your machines talk to one another (and to their SCADA overlords), LoMesh will help you avoid many of the usual pitfalls. And if your project has to contend with RF noise, large metal objects, and extreme temperatures, LoMesh is likely one of the only affordable wireless mesh technologies capable of getting the job done.

Features

  • Multi-hop mesh stack
  • Devices can be assigned to different virtual networks
  • Support for simple AT commands
  • Support for a MODBUS Remote Terminal Unit (RTU) profile
  • RS485 serial interface
  • Repeater functionality is field-configurable via IO pin
  • Excellent interference immunity
  • Unicast, multicast, and broadcast messaging
  • Dynamic sink node setting for gateway devices
  • Device Firmware Upgrade (DFU) over UART
  • Hardware capable for OTA

Technical Specifications

  • 915 MHz ISM-band operation
  • 4.5 V to 30 V operating voltage
  • Operating temperature from -20° C to 85° C
  • Adjustable output power up to +17 dBm
  • Receiver sensitivity down to −120 dBm at SF 8
  • AES-128 CBC packet encryption
  • MUI-64 modem identity

LoRa® and LoRaWAN™ are trademarks of Semtech Corporation or its subsidiaries.

LoMesh is part of the Microchip Get Launched design program, using this central CPU and this DC-DC converter.

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