I was testing this out with other USB cable’s till I got it right. Power it down and up a lot.
I had the GPIO pins plug in wrong! So plug them in right and then did not need the USB out to in. That one don’t have good amps any way to power the Raspberry Pi because the same USB cable can power it right.
Used a Y cable to a 2.1 and I guess 1 amp USB and that still did not power it on right. It should be 3.1 amp then.
Using my power brick that I solder on a USB female end on it. It has 5 volts at 5 amps. It works good. Just have one USB cable going to my Raspberry Pi now.
Order a $10 USB at 2.5 amps. The best I could find on line. Have to wait to get it.
What power supply are others using that works with a Raspberry Pi and 7″ touch screen?