I'm designing a simple PCB to interface a USB FTDI chip with some sensors, power, and an Arduino to control the sensors. I'm trying to keep connections/wires to a minimum as the system needs to withstand vibrations.
The FTDI cable plugs into a USB port on a PC and has a 5V supply line from the USB port. Is it acceptable to plug this into the 5V pin on the Arduino?
From googling I've read that the official stance doesn't recommend supplying the Arduino with a regulated 5V supply to the 5V pin, as it is not regulated like the USB connection is.
However, since I'm not using a custom regulated supply but the PC USB port itself, would this be safe?