![STM32F072RB - Mainstream Arm Cortex-M0 USB line MCU with 128 Kbytes of Flash memory, 48 MHz CPU, USB, CAN and CEC functions - STMicroelectronics STM32F072RB - Mainstream Arm Cortex-M0 USB line MCU with 128 Kbytes of Flash memory, 48 MHz CPU, USB, CAN and CEC functions - STMicroelectronics](https://www.st.com/content/ccc/fragment/product_related/rpn_information/product_circuit_diagram/93/90/4d/9f/66/a8/41/72/bd_stm32f072xb_128k.jpg/files/bd_stm32f072xb_128k.jpg/jcr:content/translations/en.bd_stm32f072xb_128k.jpg)
STM32F072RB - Mainstream Arm Cortex-M0 USB line MCU with 128 Kbytes of Flash memory, 48 MHz CPU, USB, CAN and CEC functions - STMicroelectronics
GitHub - bootsector/stm32-hid-bootloader: Driverless USB HID bootloader and flashing tool for STM32F10X devices
![USB Bootloader not recognized after upload a sketch · Issue #735 · stm32duino/Arduino_Core_STM32 · GitHub USB Bootloader not recognized after upload a sketch · Issue #735 · stm32duino/Arduino_Core_STM32 · GitHub](https://user-images.githubusercontent.com/50608159/67623550-d4a27700-f850-11e9-9400-fae9919fc339.png)
USB Bootloader not recognized after upload a sketch · Issue #735 · stm32duino/Arduino_Core_STM32 · GitHub
![USB Bootloader not recognized after upload a sketch · Issue #735 · stm32duino/Arduino_Core_STM32 · GitHub USB Bootloader not recognized after upload a sketch · Issue #735 · stm32duino/Arduino_Core_STM32 · GitHub](https://user-images.githubusercontent.com/50608159/67623459-95bff180-f84f-11e9-8360-ee94ff7d0afe.png)