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Olimex LoRa-STM32WL-DevKit Revision D1 Schematic Design Document

Schematic for the Olimex LoRa-STM32WL-DevKit featuring an STM32WL platform, integrated CMSIS-DAP debugger via STM32L052K8U3, and multiple environmental sensors.

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Overview

This design document details the schematic for the Olimex LoRa-STM32WL-DevKit Revision D1. The board is centered on a BB-STM32WL LoRa platform and incorporates an on-board CMSIS-DAP debugger utilizing an STMicroelectronics STM32L052K8U3 microcontroller. The hardware includes sensing components such as the AHT20 humidity and temperature sensor, an IIS2MDCTR magnetometer, and a footprint for an optional BME280 sensor. Power is managed by a Microne ME6210A33PG LDO regulator, supporting input from USB or an AA battery holder. Additional features include UEXT expansion, a light-dependent resistor (LDR), and user-programmable LEDs and buttons.

Use Cases

  • IoT node prototyping
  • LoRaWAN network development
  • Low-power environmental monitoring
  • Remote sensor data acquisition
  • Wireless asset tracking development

Topics

LoRa
STM32WL
Olimex
STM32L052K8U3
CMSIS-DAP
IIS2MDCTR
AHT20
BME280
ME6210A33PG
Schematic
IoT Development
LoRaWAN

Referenced Parts

AHT20

Aosong

U5 AHT20

ME6210A33PG

Microne

U1 ME6210A33PG

WPM2015-3/TR

Willsemi

FET1 WPM2015-3/TR

BME280

Bosch Sensortec

U4 NA(BME280)

1N5819

Diodes Incorporated

D1 1N5819(S4 SOD-123)

BH311P

Memory Protection Devices

BAT1 BTH-DP-AA-LF(BH311P)