Stepper Locking System

Steering the key/door knob with the might of stepper motors. See the Wiki (german) for more details and an overview.

This is forked from https://github.com/sprenger120/StepperServo.

Firmware

The firmware written in C++ is here.

Requirements for v1.0

• control stepper motor with Trinamic IC
• hall encoder connection to get current motor state
• read motor temperature
• CAN peripherie (dedicated PCB)
• power rails are secured by two fuses, with reverse polarity/overvoltage protection
• drive syncronous addressable LEDs
• get states from door and lock
• connection to two buttons to open/close door
• switch on/off Nerdstern (outdoor lamp)

Known issues in v1.0

• Mosfet Q1 has wrong connections for choosen part. Gate and Source are swapped.
  • can be solved by simply solder the part upside down
• the LQFP32 package of STM32G0B1KE doesn't support HSE connection
  • the internal HSI is used

Pictures (v1.0)