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im881a

buy lora module

iM282A-L - Long Range Radio Module

The iM282A-L is a compact and low-cost radio module that operates in the unlicensed 2.4 GHz band and combines a powerful Cortex-M3 controller with the new ultra long range transceiver SX1280 of Semtech Corporation. It has been specifically designed for battery driven applications and is able to achieve without any additional amplifiers a LoS range of more than 12 km. Please refer to the corresponding Application Note.

The WiMOD LR Base Plus firmware provides LoRa®-modem functionalities which allows to implement proprietary and cost sensitive radio networks with typical topologies like peer-to-peer and star configurations. The embedded radio protocol stack offers unacknowledged and acknowledged radio packet exchange with optional encryption and automatic power saving for battery driven applications.

Besides the modem services the firmware includes some example features which are typical for the application area of this LoRa® radio modules: a tiny sensor application which demonstrates a periodic sensor data transmission and a remote control with digital input/output via radio link.

Finally the supporting software provides two analyzing tools, which are helpful in developing radio based applications: 

  • Radio Link Test application which allows to analyze the radio link quality for different LoRa® radio settings by means of the typical metrics Packet RSSI, Packet SNR and Packet Error Rate
  • Radio Packet Sniffer which forwards received radio packets

 

 

 

 

  • Automated Meter Reading
  • Home and Building Automation
  • Wireless Alarm and Security Systems
  • Industrial Monitoring and Control
  • Long Range Irrigation Systems
  • IoT (Internet of Things)
  • Smart Cities


Frequency range: SRD Band 2.4 GHz
Modulation: LoRa®, FLRC, (G) FSK
RF output power: up to +12 dBm (50Ω pad)
Receiver sensitivity:

LoRa:

-130 dBm (SF 12;  SB 203 kHz, CR 4/6)
-127 dBm (SF 12;  SB 406 kHz, CR 4/6)
-126 dBm (SF 12;  SB 812 kHz, CR 4/6)
-120 dBm (SF 12;  SB 1,625 kHz, CR 4/6)

RF datarate: 476 bps to 2.3  Mbps
depending on modulation and settings
RF range: up to 12 000 m (Line of Sight)
Operating voltage: 1.8 V to 3.6 V
Current consumption:

0.8 µA (module in sleep, RTC off)
2 μA (module in sleep, RTC running)
9 mA (Rx, MCU sleep)
34 mA (Tx @ 3.0 V/ +12 dBm, MCU sleep)
25 mA (Tx @ 3.0 V/ +8 dBm, MCU sleep)

Interfaces: UART (default)
SPI*
I²C*
IO's: Digital IOs
Analog Inputs
Dimension (LxWxH): 20 x 25 x 3.3 mm
Operating temperature: -40°C to +85°C
Certification:

Pre-Certified according to RED 

* This functionality is not part of the standard firmware.

WiMOD LR_Studio (LoRa)

The WiMOD LR Studio is a Windows application which allows to explore the capabilities of the IMST LoRa® module, an ultra-low-power, high-performance, pre-certified Long Range radio module. The Windows GUI offers a comfortable way to configure and control the features of the embedded WiMOD Radio Stack.

Introduction

General Information:
iM282A_AN023_RangeTest_V1_0.pdf This Application Note includes results of various range tests made with the SK-iM282A.
iM282A_AN024_FirmwareUpdate_V1_0.pdf This document give a short description on how to update the firmware of the module iM282A.
iM282A_Datasheet_V1_0.pdf Data Sheet for iM282A
WiMOD_AltiumModulesLibs_V1_10.zip Modules Lib for Altium Designer.
 

LR_Base_Plus:
WiMOD_LR_Base_Plus_Feature_Spec_V1_0.pdf This document outlines the WiMOD LR Base Plus firmware features. This firmware supports the following radio WiMOD LR radio module iM282A
WiMOD_LR_Base_Plus_HCI_Spec_V1_1.pdf Host Controller Interface specification. The WiMOD LR Base Plus HCI protocol is designed to expose the radio module services to an external host controller. The communication between host and the radio (WiMOD) is based on so called HCI messages which can be sent through a UART interface. The WiMOD LR Base Plus firmware provides several services for configuration, control and radio link access.
WiMOD_LR_Base_Plus_Firmware_V1_0.zip This file contains the current WiMOD LR firmware (hex-file) for iM282A.
WiMOD_LR_Studio_V1_27_0.zip The WiMOD LR Studio is part of the WiMOD Starter Kit. It is a plug & play solution to explore the features and capabilities of the Long Range module iM282A.
WiMOD_LR_ExampleCode_V1_1.zip This file contains two projects: A “C++” implementation of LR_Base_Plus_HCI interface and a “C” implementation of LR_Base_Plus_HCI interface for EFM32TG840F32 platform.

WiMOD_LR_DevTool_V2_4_0.zip This tool is intended to be used for the first steps of implementing the HCI interface between the radio module and the host MCU. It is a basic tool for checking if the basic communication primitives are working. It generates the packets in raw format of the HCI interface.