I'm really new to arduino and I'm having some problems figuring out how to make work the project I am working on.
I would like to have a display that shows different pictures depending on the information I receive from various sensors. Everything works fine for now and I can activate LEDs to show what I would like to show with the images.
The problem is that I'm a bit lost when I start to look for a display that works with arduino UNO, because I wanted it to be at least 3.5", but I can only find the ones that work with arduino MEGA.
Any hints about where I can start looking for this things?
Okay, so they exist but that does not mean its a good choice. Consider that you have only 32kb of flash in an Uno, that is why you don't find many large screens for them. A large pixel count means large memory requirements for images and the larger fonts you'll want to use. Many times it is just impossible to squeeze everything needed into 32kb. Sure, you can add SD card or external flash memory but it just adds more software and can slow things down. All in all, the additional cost for a Mega or better yet a Due is usually worth it in the end when your Uno can't meet the demands of a larger lcd screen.
As for the screen on eBay, I have no connection to the seller and personally, I don't like his feedback score but he does say that he provides demo code. Honestly, $6 is not a lot to lose, your time is the more important factor to me. Cheap always has hidden additional costs. Buyer beware.
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