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.
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
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)
| IIS2MDCTR | Stmicroelectronics | U3 IIS2MDCTR |
| STM32L052K8U3 | Stmicroelectronics | U2 STM32L052K8U3 |
| 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) |