Dremel 3D40 3D Printer and STM32DUINO
Posted: Sun Jan 08, 2023 6:31 pm
Hi all,
I have a Dremel 3D40 3D Printer, which uses a STM32F103RCT6. I want to install Klipper on that board and wanted to use the STM32DUINO bootloader, as this is one of the recommended boot loaders for Klipper.
I had to rewire the USB pins to the USB connector and used 22 Ohm series Resistors for USBDP and USBDM and a 1.5 KOhm resistor between USBDP and 3.3 V. Unfortunately I currently have no LEDs connected (those were unfortunately connected to the USB pins).
I also checked, that pin PC12 sees "0V" and is not seen as a user button pressed. Therefore I selected "generic_boot20_pc13.bin", although I cannot really see the LED.
I used a Lauterbach debugger to flash the boot loader via SWD.
When I now connect the USB to my PC, the device Manager shows:
libusb_win32 devices
Maple DFU
It does not show up as a serial port. This would be required to continue with the Klipper installation. What am I doing wrong ?
Thanks
I have a Dremel 3D40 3D Printer, which uses a STM32F103RCT6. I want to install Klipper on that board and wanted to use the STM32DUINO bootloader, as this is one of the recommended boot loaders for Klipper.
I had to rewire the USB pins to the USB connector and used 22 Ohm series Resistors for USBDP and USBDM and a 1.5 KOhm resistor between USBDP and 3.3 V. Unfortunately I currently have no LEDs connected (those were unfortunately connected to the USB pins).
I also checked, that pin PC12 sees "0V" and is not seen as a user button pressed. Therefore I selected "generic_boot20_pc13.bin", although I cannot really see the LED.
I used a Lauterbach debugger to flash the boot loader via SWD.
When I now connect the USB to my PC, the device Manager shows:
libusb_win32 devices
Maple DFU
It does not show up as a serial port. This would be required to continue with the Klipper installation. What am I doing wrong ?
Thanks