Printrbot on 32 bits

thingiverse

Want to do your own controller for a Printrbot? I did one with bluepill stm32F103 but the memory was used to 98% so no space for fancy features..... Now you can find the blackpill with stm32F401 from weact (https://github.com/WeActTC/MiniSTM32F4x1) on aliexpress.... How to compile Marlin-bugfix-2.0.x (2.0.8) downloaded 02_2021 on stm32F401ce blackpill using Platformio in VisualStudioCode: Add blackpill_f401ce.json from https://github.com/platformio/platform-ststm32/blob/develop/boards/blackpill_f401ce.json in ../Marlin-2.0.x/buildroot/share/PlatformIO/boards/. in ../Marlin/src/pins/stm32f4 Create a file "pins_blackpill_f401ce.h" containing the description of the board. add #define FLASH_EEPROM_EMULATION //emulate a EEPROM 4Kb in flash In Marlin/src/pins/pins.h in section // // STM32 ARM Cortex-M4F // add '#elif MB(blackpill_f401ce) '#include "stm32f4/pins_blackpill_f401ce.h" // STM32F4/pins_blackpill_f401ce.h in ../Marlin-2.0.x/Marlin/src/core/boards.h in section // // STM32 ARM Cortex-M4F // add #define BOARD_blackpill_f401ce 4299 // blackpill_f401ce in ../Marlin-2.0.x/platformio.ini change: [platformio] src_dir = Marlin boards_dir = buildroot/share/PlatformIO/boards default_envs = blackpill_f401ce include_dir = Marlin and add: [env:blackpill_f401ce] platform = ${common_stm32.platform} extends = common_stm32 board = blackpill_f401ce ; change microcontroller board_build.mcu = stm32f401ceu6 ; change MCU frequency board_build.f_cpu = 84000000L upload_protocol = dfu build_flags = ${common_stm32.build_flags} -DHSE_VALUE=25000000 in ../Marlin-2.0.x/Marlin/Configuration.h change: '#define SERIAL_PORT -1 and '#ifndef MOTHERBOARD ' #define MOTHERBOARD BOARD_blackpill_f401ce '#endif Customize Marlin/Configuration.h and Marlin/Configuration_adv.h for your printer.... That's all....