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MIKROE-6318
23 g
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LR 11 Click - 868MHz is a compact add-on board for long-range, low-power wireless communication in IoT applications. This board features the 453-00140R, an ultra-low power LoraWAN module Ezurio (part of the RM126x series), integrating the Silicon Labs EFR32 SoC and the Semtech SX1261 radio. It supports LoRaWAN classes A, B, and C, offering secure, scalable, and bi-directional communication. It operates in the 863-870MHz frequency range with a typical transmit power of up to 14dBm and a communication range of up to 15km. The board also features an additional mikroBUS™ socket for peripheral expansion with UART, SPI, and I2C interface support. With its extensive regulatory support and certifications, the LR 11 Click is ideal for IoT devices, asset tracking, smart home systems, industrial automation, and any application requiring long-range, battery-powered sensor solutions.
LR 11 Click is fully compatible with the mikroBUS™ socket and can be used on any host system supporting the mikroBUS™ standard. It comes with the mikroSDK open-source libraries, offering unparalleled flexibility for evaluation and customization. What sets this Click board™ apart is the groundbreaking ClickID feature, enabling your host system to seamlessly and automatically detect and identify this add-on board.
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NOTE: The 453-00140R module includes an on-module antenna connector designed to work with the 868/915MHz FlexDIPOLE antenna (EFH8631A3S-10MH4L) included in the Click board™ package. This offers enhanced connectivity and functionality, ensuring optimal performance for long-range communication applications.
LR 11 Click is based on the 453-00140R, an ultra-low power LoRaWAN module from Ezurio. This module is part of the Ezurio RM126x series, specifically the RM1261, which integrates the Silicon Labs EFR32 series System on Chip (SoC) and the Semtech SX1261 radio. This combination provides an efficient, low-power, long-range solution for developing a wide range of LoRaWAN™ applications certified by the LoRa Alliance. The module has a built-in MHF4 connector, a Temperature Compensated Crystal Oscillator (TCXO), and a DC-DC converter, ensuring reliable performance in various environments. Supporting LoRaWAN classes A, B, and C, the 453-00140R offers secure, scalable, and bi-directional communication. It has broad regulatory region support, including Europe, the UK, Taiwan, Japan, and India, and holds certifications such as FCC, ISED, and AS/NZS, making it a reliable and efficient solution for diverse use cases requiring robust long-range communication.
In addition to LoRaWAN capabilities, the 453-00140R features a LoRa Point-to-Point (LoRa P2P) capability, enabling the creation of private, ultra-long-range radio networks between two RM126x modules. This capability supports both unicast and broadcast modes, accommodating up to 64 devices per network. This module is designed to operate in both hosted and hostless modes. In hosted mode, it is programmed with an AT command set, while in hostless mode, it uses its in-module Cortex-M33 core, which includes 512kB of flash memory and 32kB of RAM. The module's key characteristics also include a frequency range of 863-870MHz, with 868MHz being typical, a maximum transmit power of up to 14dBm, and a communication range of up to 15km in open spaces. This Click board™ is ideal for IoT devices, asset tracking and control, smart home systems, public or private networks, irrigation and agriculture applications, industrial automation, and any long-range, battery-powered sensor application.
The 453-00140R and the host MCU are communicated through a UART interface, using standard UART RX and TX pins and hardware flow control pins (CTS/RTS- Clear to Send/Ready to Send) for efficient data transfer. The module defaults to a communication speed of 115200bps, allowing for data exchange over AT commands. At the lower part of the LR 11 Click, an additional unpopulated header offers full support for debugging and programming capabilities. With this header, users can use a Serial Wire Debug interface for programming and debugging, available through the SWD interface pins (SWDIO, SWCLK, and SWO).
Besides interface pins, this Click board™ also has a reset pin/button (RESET) for direct module resetting and a BOOT button used to determine when the bootloader must be executed. Upon reset, the bootloader begins execution. When the BOOT button is pressed, the bootloader executes firmware updates via the UART. When released, the bootloader stops execution and passes control to the main application firmware.
A special feature of the LR 11 Click is the additional mikroBUS™ socket, which expands the board's functionality with peripherals such as sensors and LCDs. Added Click boards™ can communicate with the onboard 453-00140R module through UART, SPI, or I2C interfaces. Given that the 453-00140R GPIOs PD02 and PD03 are shared across multiple signals (can be used for all three interfaces), they must be configured appropriately when selecting the communication mode. This is achieved via six pads located on the peripheral mikroBUS™ socket section, enabling the PD02 and PD03 pins of the module to be set for the desired interface. By default, SPI communication is selected with the CIPO and COPI pins connected. If another interface is needed, it is necessary to cut these traces (disconnect them) and then solder the pads of the desired interface pins (UART or I2C).
This Click board™ has both mikroBUS™ power rails needed for the peripheral mikroBUS™ socket but only uses a 3.3V voltage level as a main power supply for the 453-00140R module. The board must perform appropriate logic voltage level conversion before using MCUs with different logic levels. It also comes equipped with a library containing functions and example code that can be used as a reference for further development.
Type
LoRa
Applications
Ideal for IoT devices, asset tracking, smart home systems, industrial automation, and any application requiring long-range, battery-powered sensor solutions
On-board modules
453-00140R - ultra-low power LoraWAN module Ezurio
Key Features
868MHz frequency range, based on the EFR32 series SoC, powerful Cortex-M33 core, both hosted/hostless modes of operation, up to 15km in open space, additional mikroBUS™ socket for peripheral expansion, ultra-low power consumption, wide regulatory region support and certifications, LoRa P2P, and more
Interface
UART
Feature
ClickID
Compatibility
mikroBUS™
Click board size
L (57.15 x 25.4 mm)
Input Voltage
3.3V,5V
This table shows how the pinout on LR 11 Click corresponds to the pinout on the mikroBUS™ socket (the latter shown in the two middle columns).
Label | Name | Default | Description |
---|---|---|---|
LD1 | PWR | - | Power LED Indicator |
J1 | SWD | Unpopulated | SWD Debug Interface Pads |
T1 | RESET | - | Reset Button |
T2 | BOOT | - | Bootloader Execution Button |
Description | Min | Typ | Max | Unit |
---|---|---|---|---|
Supply Voltage | 3.3 | - | 5 | V |
Frequency Range | 863 | 868 | 870 | MHz |
Transmit Power | - | - | 14 | dBm |
Range | - | - | 15 | km |
We provide a library for the LR 11 868MHz Click as well as a demo application (example), developed using MIKROE compilers. The demo can run on all the main MIKROE development boards.
Package can be downloaded/installed directly from NECTO Studio Package Manager (recommended), downloaded from our LibStock™ or found on MIKROE github account.
Library Description
This library contains API for LR 11 868MHz Click driver.
Key functions
lr11868mhz_reset_device
This function resets the device by toggling the reset pin logic state.
lr11868mhz_cmd_run
This function sends a specified command with or without parameters to the click module.
lr11868mhz_cmd_set
This function sets a value to a specified command parameter of the click module.
Example Description
This example demonstrates the use of LR 11 868MHz Click board™ by showing the communication between two click boards configured in P2P network mode.
void application_task ( void )
{
switch ( app_state )
{
case LR11868MHZ_POWER_UP:
{
if ( LR11868MHZ_OK == lr11868mhz_power_up( &lr11868mhz ) )
{
app_state = LR11868MHZ_CONFIG_EXAMPLE;
log_printf( &logger, ">>> APP STATE - CONFIG EXAMPLE <<<rnn" );
}
break;
}
case LR11868MHZ_CONFIG_EXAMPLE:
{
if ( LR11868MHZ_OK == lr11868mhz_config_example( &lr11868mhz ) )
{
app_state = LR11868MHZ_EXAMPLE;
log_printf( &logger, ">>> APP STATE - EXAMPLE <<<rnn" );
}
break;
}
case LR11868MHZ_EXAMPLE:
{
lr11868mhz_example( &lr11868mhz );
break;
}
default:
{
log_error( &logger, " APP STATE." );
break;
}
}
}
The full application code, and ready to use projects can be installed directly from NECTO Studio Package Manager (recommended), downloaded from our LibStock™ or found on MIKROE github account.
Other MIKROE Libraries used in the example:
Additional notes and informations
Depending on the development board you are using, you may need USB UART click, USB UART 2 Click or RS232 Click to connect to your PC, for development systems with no UART to USB interface available on the board. UART terminal is available in all MIKROE compilers.
This Click board™ is supported with mikroSDK - MIKROE Software Development Kit. To ensure proper operation of mikroSDK compliant Click board™ demo applications, mikroSDK should be downloaded from the LibStock and installed for the compiler you are using.
For more information about mikroSDK, visit the official page.
NOTE: Please be advised that any peripheral devices or accessories shown connected to the Click board™ are not included in the package. Check their availability in our shop or in the YMAN section below.