Seeed Studio Includes LoRa-E5 STM32WL Module in Two New Kits

By Perry Cohen

Associate Editor

Embedded Computing Design

March 12, 2021


Seeed Studio Includes LoRa-E5 STM32WL Module in Two New Kits
(Image courtesy of Seeed Studio)

Within the LoRa-E5 mini board and the Arduino UNO shaped LoRa-E5, Seeed Studio included the LoRa-E5 STM32WL module.

The two kits support LoRaWAN protocol and boast a transmission range up to 10km and ultra-low power consumption.

Features of the LoRa-E5 mini board according to the company include the following:

  • LoRa connectivity

  • LoRa-E5 modules based on STM32WLE5JC SoC with Arm Cortex-M4 MCU @ 48 MHz with 256 KB flash memory, 64 KB SRAM, SX126x LoRa radio

  • Modulations – LoRa, (G)FSK, (G)MSK, BPSK

  • Operating frequencies – 868/915MHz (EU868, US915, AU915, AS923, KR920, IN865)

  • Output power – up to +20.8 dBm at 3.3V

  • Rx sensitivity – -116.5 dBm to -136 dBm

  • SMA-K and IPEX antenna connectors

  • USB – 1x USB Type-C port for power and programming

  • LoRa-E5 mini – 2x 12-pin through-hole and castellated headers with GPIO, UART, ADC, SPI, I2C.

Features of the Arduino UNO shaped LoRa-E5 according to the company include the following:

  • Arduino headers (but not fully compatible with Arduino shields)

  • 3x Grove headers (2x I2C, 1x UART)

  • 3-pin RS485 terminal block

  • 5x 4-pin headers for SPI, USART, I2C, USB to TTL, LPUART

  • User button, configuration jumpers, SWIM/SWD debug header

  • Supply voltage – 5V via USB-C port or ~3.7V battery via 2-pin header (LoRa-E5 mini) or 2-pin JST connector (LoRa-E5 devboard)

  • Sleep current as low as 2.1uA (WOR mode)

In addition to the boards themselves, users also receive an antenna 868 MHz or 915 MHz, a 20cm USB Type-C cable, and a battery holder for two AA batteries. Further, they are able to be controlled with the use of AT commands sent over USB to a PC or over UART from another board.

For more information, visit

Perry Cohen, associate editor for Embedded Computing Design, is responsible for web content editing and creation, podcast production, and social media efforts. Perry has been published on both local and national news platforms including (Phoenix), (Phoenix),, Cronkite News, and MLB/MiLB among others. Perry received a BA in Journalism from the Walter Cronkite School of Journalism and Mass Communications at Arizona State university.

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