Suggest a 7" touchscreen to get started?
I apologize for yet another 'what LCD' thread. I've read up on the subject but am quickly getting lost in a lot of the techno jargon. I can look up what the technology is and how it differs from others, but trying to make a informed decision based on subjective observations is a bit difficult. Anyway, here's my situation; I'm just getting started in carputers and want to get a fully working system on my bench to make sure I can get it working the way I want to and will be satisfied with the results before I commit to installing the hardware in my car. I'd like to get a touchscreen to start testing with the expectation that I'll probably upgrade it should I commit to the project. Also I feel that if I have one in hand and have some experience with it I can make a better informed decision on what features I need and what I don't when I buy for the final install.
Am I wrong in assuming that they all pretty much work the same from a computer functionality standpoint? For example if I get a brand 'X' screen to play with then decide I'm going to go with brand 'Y' for the final install will all settings and functionality be preserved (drivers not withstanding). This will also give me a chance to see what one looks like in my car in real life to see how crazy I need to go with anti glare/sunlight readability. Maybe the random one I pick up now will end up being good enough? One thing I know I definitely want is to be able to control the brightness externally - tied in with the dash lights. I'm not an electronics pro by any means but I can handle certain things like if I need to make a voltage to PWM circuit to drive LED's etc.
Again sorry for such a broad sweeping question.