Sorry about that, but the reason for no power supply is because the picture was taken outside for better lighting.This was pointed out to me on this site sometime ago now. i.eTake pictures outside so it is easier to see the parts and wiring.
I read this: from the Arduino website:5V. This pin outputs a regulated 5V from the regulator on the board. The board can be supplied with power either from the DC power jack (7 - 12V), the USB connector (5V), or the VIN pin of the board (7-12V). Supplying voltage via the 5V or 3.3V pins bypasses the regulator, and can damage your board. We don't advise it.
How should I power the whole project, so that everything works
What you need to do is disconnect the 5V wire from the display and connect it directly to an external 5V supply. You will still need to connect the ground from the external supply to the Arduino ground.
Supplying voltage via the 5V or 3.3V pins bypasses the regulator, and can damage your board. We don't advise it.
I found this bit of information:The barrel connector can be supplied an input of 7-12V. This is regulated to 5V by the onboard voltage regulator, and the board is powered on.
Regarding the link for the 2nd one, I didn't know anything about removing the ?.
How or what way should I power everything with a 5v power supply, Buy a proper regulated power supply and connect it to a barrel jack, then 5v wire direct to the display and gnd to the Arduino.??
I have tried a printer USB cable from a multi adaptor charger and it lit up the display , then went off.