04-11-2017, 06:34 PM
(04-10-2017, 09:46 PM)MarkHaysHarris777 Wrote: TinkerBear, this is also for Pete, the problem is that the wall wart PSU(s) are not clean especially under load ( like the spikes which appear during bootup ). ( yes, the DCIN could have been more robust with decoupling caps and inductors ).
Sorry Macrus, this does NOT apply to me... I am not, and have never run from a wall wart PSU, but from a 4A DC-DC PSU set at 5.25v, and have had zero issues with it on the pine64 (nor any other SoC board) until just recently. Plus as mentioned before the pine64 in question has its lithium battery connected... so there is no excuse for the PMIC to be dropping the ball. No change in power supply, leads, pine64 - only OS updates. The system is fine when it is running... it just fails to successfully reboot/boot at times. I do appreciate that filtering will help on cheap crap noisy power supplies, but not in this instance.
I would also like to suggest that a more standardised 2.1mm ID barrel connector be used. 3.5mm/1.35mm is reminiscent of the ones used on other boards which then use pathetic DC to USB leads with microscopic thin wire. Power supplies with 2.1mm connectors are more readily available, as are decent connectors, including some nice ones with screw terminals for your own wire
