![arduino - Power selection circuit for USB or DC Jack - both at 5V - Electrical Engineering Stack Exchange arduino - Power selection circuit for USB or DC Jack - both at 5V - Electrical Engineering Stack Exchange](https://i.stack.imgur.com/EEN0a.jpg)
arduino - Power selection circuit for USB or DC Jack - both at 5V - Electrical Engineering Stack Exchange
![usb device - switch between battery and usb power no microcontroller circuit - Electrical Engineering Stack Exchange usb device - switch between battery and usb power no microcontroller circuit - Electrical Engineering Stack Exchange](https://i.stack.imgur.com/iLyQB.png)
usb device - switch between battery and usb power no microcontroller circuit - Electrical Engineering Stack Exchange
![USB power supply with LM2575 - Power Supply Circuits | Power supply circuit, Circuit projects, Power USB power supply with LM2575 - Power Supply Circuits | Power supply circuit, Circuit projects, Power](https://i.pinimg.com/736x/ad/e7/b2/ade7b2a3b7f50b31eaa535b6e5cfb2d1.jpg)
USB power supply with LM2575 - Power Supply Circuits | Power supply circuit, Circuit projects, Power
![I would like to power my STM32 over USB (5V) and, when connected, a 4-12V power source (P1). I need to drive external devices with this MCU and will be powering the I would like to power my STM32 over USB (5V) and, when connected, a 4-12V power source (P1). I need to drive external devices with this MCU and will be powering the](https://i.redd.it/zfvpxshiga161.jpg)