LoRa-E5 STM32WLE5JC - LoRaWAN 868/915 MHz Development Kit - Seeedstudio 113990934

Product description: LoRa-E5 STM32WLE5JC- LoRaWAN 868/915 MHz development board - Seeedstudio 113990934

The LoRa-E5 development board is an easy to useLoRaWANstandard communication module created bySeeedstudio. It allows long range wireless communication in LoRaWAN standard in868 MHz and 915 MHzband, so it can be used both in the European Union and North America. The usedSTM32WLE5JCchip allows for data transmission within a range ofup to 10 km. The chip is based on ARM Cortex-M4 core and Semtech SX126X LoRa supporting LoRaWAN protocol and GFSK, BPSK, GMSK and LoRa modulations. The board can be powered by the included cage for two AA batteries. There are additionalGrovetype sockets on the board.

LoRa-E5 development board.

Layout of elements on the LoRa-E5 board.

Interfaces in LoRa-E5

LoRadevelopment board has all inputs / outputs pinned at 2.54mm pins, these are interfaces likeUART, ADC, SPI, I2C, RS485. It has a built-inRESETbutton,BOOTbutton and a button for any purpose.All leads of the board are labeled, so it is very easy to find the right pin. Additionally there are three Grove connectors on the board: 2x I2C and 1x UART. LoRa-E5 is a module with very long wireless communication range and ultra low power consumption. It allows sending and receiving data at distancesup to 10 km, and its resting current consumption is2.1 uA(WOR mode). It is designed for industrial standards, and can operatefrom -40°C to 85°C, with sensitivityfrom -116.5 dBm to -136 dBm, and output power up to 20.8 dBm at 3.3 V.

Kit contents

• LoRa-E5 mini module
• Antenna
• USB C cable
• Basket for two AA batteries

How to use LoRa-E5 mini

• Via AT commands - the board has a built-in USB - UART converter, thanks to which you can program the board connected to the computer using AT commands.
• Using UART interface - LoRa-E5 mini can communicate with another module, e.g. Seeeduino XIAO via UART interface and send and receive AT commands.
• Create user applications using SDK - with the provided SDK files you can create your own LoRa board with MCU functionality using STM32Cube programmer.

What is LoRa?

LoRa or LoRaWAN protocol allows to transmit data wirelessly, over long distances with very low power. The LoRa protocol in the LoRa E5 module uses sub-gigahertz free, radio frequencies such as 868 MHZ (Europe) or 915 MHZ (North America).

LoRa-E5 kit contents.

LoRa-E5 module specifications Supply voltage from 3 V to 5 V Output voltage EN 3.3 V / 5 V Output power up to 20.8 dBm at 3.3 V Operating frequency 868 MHz (EU) / 915 MHz (US) / 923 MHz (AS) / 920 MHz (KR) / 865 MHz (IN) Protocol LoRaWAN Sensitivity -116.5 dBm to -136 dBm Interfaces

• USB type C
• JST 2.0
• 3x Grove (2x I2C, 1x UART)
• RS485
• SMA-K
• IPEX

Modulation LoRa, (G)FSK, (G)MSK, BPSK Current consumption 2,1 uA (in WOR mode) Operating temperature -40°C to 85°C Dimensions 96 x 54 mm

Useful links

• Manufacturer's website: Seeedstudio 113990934
• Documentation
• SDK files
• User guide