ArmmiteF407 V5.07.02 betas - Library - No Battery and more.

Author	Message
disco4now Guru Joined: 18/12/2014 Location: Australia Posts: 992	Posted: 11:37am 07 Sep 2023         Mixtel90 said   Oh, and there's an option to power the F4 from incomimng 5V, the 3V3 regulator or neither (leaving it for the USB). 5V input pins are duplicated as a 2-pin polarized header and a 3.5mm barrel jack. There is a note in the manual to remove R25 (0 ohm resistor) if powering the board from an external 5V supply to stop it feeding back to the USB supplied 5V. There is no jumper to  achieve this so removing R25 is how to achieve it.