12-28-2018, 06:32 AM
Yes, you have satisfied one of the main requisites for stable Pi powering.... keep the path from the power supply/regulation to the Pi as short as possible.
Like you I use a 12v 3 amp smps wall-wart then to a dc-dc converter with regulation that is as close to 'onboard' the Pi as possible.
Everything else, though measuring correctly for stable 5v, caused the onboard red power led to flash occasionally.
USB cables can be notoriously poor in their capacity to supply the demands of the Pi.
Just google the V/A standards for usb cables then realise that those are 'ideals' that most manufacturers do not meet...
Like you I use a 12v 3 amp smps wall-wart then to a dc-dc converter with regulation that is as close to 'onboard' the Pi as possible.
Everything else, though measuring correctly for stable 5v, caused the onboard red power led to flash occasionally.
USB cables can be notoriously poor in their capacity to supply the demands of the Pi.
Just google the V/A standards for usb cables then realise that those are 'ideals' that most manufacturers do not meet...
----------
bob
bob
