SainSmart Mega 2560 + TFT_320QVT

I bought this:

SainSmart Mega2560 + 3.2" TFT LCD Shield + Touch Screen SD Reader For Arduino

http://youtu.be/zcrW7FHcZMM

http://youtu.be/8bnAmIq3BIw

http://cgi.ebay.co.uk/ws/eBayISAPI.dll?ViewItem&item=280931953825

To get it working, all I needed to do was download the UTFT library from

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

Then go through and add:

const in front of each font definition in DefaultFonts.c

~/sketchbook/libraries$ diff -t UTFT UTFT.orig
diff -t UTFT/DefaultFonts.c UTFT.orig/DefaultFonts.c
21c21
< fontdatatype SmallFont[1144] PROGMEM={         
---
> const fontdatatype SmallFont[1144] PROGMEM={         
125c125
< fontdatatype BigFont[3044] PROGMEM={
---
> const fontdatatype BigFont[3044] PROGMEM={
234c234
< fontdatatype SevenSegNumFont[2004] PROGMEM={
---
> const fontdatatype SevenSegNumFont[2004] PROGMEM={

In the demo file, comment out the myGLCD line and replace it with this one:

// For Mega 2560
UTFT myGLCD(GEEE32,38,39,40,41);

// or

UTFT myGLCD(ITDB32S,38,39,40,41);

For the TFT_320QVT you of course want the 320x240 demos.

Helped:

• http://forum.arduino.cc/index.php?topic=115211.0
• http://technomungo.blogspot.com.au/2013/11/how-to-use-utf-library-on-sainsonic.html +

Power supply...

The Mega 2650 will happily run powered off the USB cable connected to your PC, but you can give it an external 9v power lead instead.

It just needs a 2.1mm x 5.5mm plug and up to about 650mA 9V DC