Hi I just read this article: http://playground.arduino.cc/Learning/WhatAdapter
It suggests using a PSU that is 12V DC, 1A, centre positive and 2.1mm plug.
The second one is 2A instead of 1A. Will that still work? Or will the extra Amperage fry my Arduino?
I am planning on using 16 IR LEDS and 16 IR receiver modules on my mega. and 5-6 IR LEDS and 5/6 IR receiver modules on my Uno. Although on each I only run one LED at a time, I turn each on and off in quick succession. So I guess I really only need the power to drive one IR led lol. But anyways im unsure.
Will the 2A one help as it will guarantee I have the power?
Alternatively I have this for my RPi: http://thepihut.com/products/7-port-usb-hub-for-the-raspberry-pi Is this sufficient? It only gives out 5V and I read the Arduinos need 7-12V.
One final question, they say 7-12? Is 12 the best option, still safe, but lots of power?