LoRa Wireless Triple Stepper Controller

Build for 7th PCBWAy Project Design Contest

CLICK HERE to see the project.

Designed to remote control up to three axis mechatronic system. Build with MIPOT 32001506DEU LoRa Open Core module based on STM32WL55JC dual core microcontroller.

Top Side of the board

Bottom Side of The board

Board with 4 layers for EMI Compliance

Build with Kicad

Main firwmare files for a quick view

Pcb and stencil order on pcbway

Mode of Operation

Closeup

SPI commonucation between microcontroller and TMC2130 Drivers

Electrical characteristics

Parameter	Description	Min	Typ	Max	Unit	Test Conditions
Input Voltage	-	6		45	V	-
Operating temperature	-	0	25	55	*C	-
Power consumption	-	-	47	-	mA	Vcc 6Vdc - Steppers Off

Folder content and description

• technical_docs: Datasheet, Application notes and manual of the on-board electronic components.
• firmware: Source code of the microcontroller written in C.
  • Core: The application files, system and peripheral configuration.
  • freertos: The Freertos kernel. Keep read only.
  • freertos_cli: The Freertos command line interface source code. Keep read only.
  • wl-lib: STM32 HAL and LL Drivers. Keep read only.
  • trinamic_lib: Driver of TMC2130 stepper controller.
  • miplib Driver of MIPOT LoRa Module 32001506DEU. Keep read only.
• img: Development and test images of the project.
• kicad: hardware design files.Source files of schematic and PCB.
  • lib: Symbols and footprints of the components.
• production: Production files. Gerbers, BOM and Stencil.
• doc: User manual of the board and Schematic. PDF format.

Bll of materials

Interactive BOM.

Firmware characteristics

Based on Freertos with simple and clean development. .

Software needed for development

• STM32CubeIDE 1.17.0
• KICAD 8.0.5
• GIT 2.46.1.windows.1
• Tera Term 5.3 x86

Tools needed for development

Programmer STLINK.

License

Shown in the LICENSE.md file

Developers

Hardware developer: @ts-manuel Firmware developer: @Stulinaz

Caution

Manual soldering of SMD components requires high level of manual skills. Project not suited for beginners in firmware development. A good understanding of C language is a must.