TFT-OLED questions

[AlanWooler]

Hi Andrew, I have a question for you about screens and the different things they can display. You do three models and I have bought two of them so far.

OLED screen - SSD1306 128x64 Pixel OLED Display Module


Pros:
Only uses 4 pins
Very low current
An amazing range of different fonts and sizes

Cons:
Single colour for text
Can't display images like .bmp files


Since this is small, it is perfect for a project I am working on for keeping an insulated box at the right temperature. It displays what is going on right there and then without needing a USB cable and a serial link and I don'e need fancy colours or graphics as I just want to see what it is doing quickly. Perfect little device and a great price.






Arduino Compatible TFT LCD module


Pros:
Uses just 5 pins
Very easy to display .bmp images on the screen and position them
Can put text on top of an image with ease
Very large colour range for setting the background colour
Same large colour range for text & so easy to set
Arduino give wiring plans for all the major boards they make, so easy to wire up on them

Cons:
Doesn't seem to have any font libraries
You can change the text size, but it becomes blocky

This is perfect for 2 projects that I am making, the first is for a shop, so wonderful that I can put their logo on the screen for 3 seconds as it boots up before it then starts to display stats. The other project is for a car parking sensor (as image above shows) so perfect for displaying different colour texts around an image of a car.









2.4" Colour TFT touch screen panel

This display I have not bought yet, but plan to as I think it will be ideal for other ideas that I have in my mind.
The question I have is, do you know if it has a font library and sizes like the OLED screen has?

[andrew]

That's is a good summery of the screens. One thing I should point out if it is not obvious, is that the font and image options are a limitation of the libraries, not the screens themselves. There may be other libraries in existence that could have these extra features so if it is important it is always worth a google.

For the TFT display we have tested it with the UTFT library written by Henning Karlsen together with our own library (HCTouch) for resistive touch screen support. I believe that UTFT library currently supports 3 sizes of fonts. You can see two of them in the picture running our example sketch. You can find a manual for the UTFT library here:

http://www.henningkarlsen.com/electroni ... .php?id=51

[AlanWooler]

Thanks for that Andrew, very helpful. I think once I have finished my current projects, I will have to buy one of the touch screen modules as they do seem very good & a lot of fun.