Just wondering if anyone has any prior experience with a TFT LCD touch screen the size of about an iPhone screen 5~7 inches.
I've tried to look a few up, and anything greater than the size of 2.8 inches seems to be designed for the Arduino Mega rather than the Uno which I own.
Does anyone have a suggestion for a screen that size suitable for the Uno? Or even a tutorial about one.
Thanks
The reason you do not find large screens for an Uno is because they would they would be for most purposes, unusable. 32k of code and 2K of ram are serious limitations for any any graphic bitmapped display. In addition, the majority of common, inexpensive shield based Uno TFT LCD’s use the majority or all of the available pins just for the display and touchscreen.
The bigger the display, the more memory you typically need to manage the images and the slower the screens refresh. Realistically, you’d need a Raspberry pi or something in that class to handle a 5-7 inch iPhone class screen.
It all comes down to what you’re looking to build with a “large” screen. Can you supply details of what youre looking to do?
If you store image bitmaps and fonts etc on an SD card you could do it but it would be slow.
Buydisplay.com has some nifty stuff, such as:
with an I2C interface.
With that display and an SD card you could theoretically display static images from an Uno.
Not sure what model of Arduino this guy is running but the result looks pretty good.
Thanks for your responses! The actual goal is to use development board Omega2+ which uses the Arduino IDE and functionality via an Arduino uno dock.
So if memory is the problem then the omega is has a fair bit more, so I would assume it would be alright
I appreciate the links and the clear reasoning as to why you'd need a mega compared to the uno