IoT Risk Data Logger,

STM32L4 based

Open source & open hardware project aimed to collect environment data e.g for logistics, cold chain monitoring, last mile delivery, etc.

Features

TODO

Firmware docs

Documentation: Doxygen

Firmware structure

• enclosure - 3D models for enclosure
• hardware - schematics, PCB, BOM
• firmware/iot-risk-logger-stm32l4 - main application
  • libraries - external libraries
  • app - main application
    • drivers - drivers for peripherals
    • core - actors util functions, core non-threaded modules
    • config - configuration files, list of events and actors
    • tasks - main threads

Parts video

risk-logger-assembly-v15.mp4

Schematics & PCB

Schematics PDF

Hardware specifications

Item	Description
MCU	STM32L412 Cortex M4, 80MHz (48), 128K ROM, 40K RAM, TQFP32
Crystal	32.768kHz
Flash	QSPI 64Mbit
NFC	ST25DV04K
Temperature & Humidity	SHT30-DIS
Light	OPT3001
IMU	LIS2DW12
Power	CR2032 3V 235mAh

Enclosure

Assembly

Developed with

OS	MacOS, Apple Silicon
Schematics & PCB	KiCAD 7.0.0
3D CAD	Fusion 360
Graphical MCU configure	STM32CubeMX 6.10.0
IDE	neovim, CLion
Hardware debug probe	J-Link EDU Mini 8.08.91
Firmware debug	Segger Ozone 7.94
Firmware debug analysis	Segger SystemView 3.52
Power analysis	Nordic Power Profiler Kit II
Oscilloscope & Logic analyzer	Digilent Analog Discovery 3
Logic analyzer software	Digilent Waveforms

Quick start

After clone, init submodules if you forgot

git submodule update --init --recursive