04-11-2017, 05:28 AM
(04-10-2017, 11:09 PM)MarkHaysHarris777 Wrote: ... on the connector, its not a theory; the engineers at the plant have confirmed that the microUSB connector does not work properly, and they have decided to replace the microUSB with a barrel connector; the new sopine base boards are now shipping with the new barrel connectors; at some point the pine boards will get this same revision.
marcus
It's a good idea - particularly if you want any shields/hats on there, battery charging, and display, and .... 1.8A is weensy. I assume they used a micro USB because RPi did, and they wanted to slot in as a replacement or upgrade. I don't think it was a great choice for the RPi either, if I'm honest.
Oh, the irony: Just today I got my two 5V3A wall warts with micro-USB connectors from China, AND learned the current-carrying capacity of a micro USB port is 1.8A.
I'm just sayin I don't think it's the source of my crash-on-headless-boot - because I'm only seeing 0.3A. My meter doesn't update that fast, but there should be enough energy cached on the board to get through current spikes.
Though now that I think about it, maybe a sense resistor there and the oscilloscope across it would show me current spikes more easily than trying to find a voltage dropout.