I need a computer on the board like raspberry pi for vending machine (I want to replace the original controller). This is list of some requirements:
1) It should have pins to connect to the mdb protocol & other stuff through gpio.
2) Good performance. There will be a display with browser showing rails application running. I've tried a raspberry pi B+, but it's too slow (it can't even run a browser with speed like a laptop pc). So, I want to choose a more powerful system like odroid, wandboard etc.
3) Custom video output. Sometimes I need to display FullHD(1920x1080), sometimes I need to show at 768x1024 (yes, the computer should simply rotate video output)
4) I don't want to connect microcomputer to display directly, not through HDMI, DVI or something like this. (This is not required, but very desirable).
Please help me choose. Nowadays I try to choose from odroid, wandboard or pandaboard. Are there any other computers? What version of the computer is advisable?