I'm trying to create a portable raspberry pi with an lcd screen.
My lcd screen requires 12v and 4A to work properly and i already tried to follow guides like the following: http://www.makeuseof.com/tag/pi-go-x-ways-powering-raspberry-pi-portable-projects/ (the battery pack diy solution)
I'm thinking about using a battery pack of 6 AA (12V)
From what I understand so far, i need to wire the battery to a regulator like this sparkfun.com/products/107 to force 5v on output to the pi board to make it work. Then again from the battery to the lcd controller. Am I missing something?
I would like to make it portable, but not to change batteries every single time. Using the rechargeable ones, is it possibile to charge them? (with a usb, micro usb charger for ex.). Do I need a particular adapter?
Thanks for the answers, i will try the several solutions you proposed. As you asked this is the model of my lcd screen: LQ121S1LH03 As i get it from a really old laptop i bought online a controller for that specific lcd, and on the requirements page was clearly written 12V and 4A. I tried to power it up with a charger i had at home (the charger is 12V and 1.2A) and i got a white screen as result. After googling i discovered it was a lack of current, that's why i thought about 4V.
The controller i used is the following one: http://www.ebay.it/itm/M-NT68676-2A-HDMI-DVI-VGA-Audio-LCD-Controller-Board-DIY-Kit-Power-Adapter-/121059321784?hash=item1c2fb2a7b8:g:4AUAAOxyjNlRym3z (the power adapter was not included)