View Full Version : Touch Screen

09-30-2008, 03:39 PM
Hey guys,

I supposed this is the best place to ask this question.

Suppose I wanted to make a kind a MP3-4 player with a touch screen, I would need a 4 wire touch scren, a controller and a kind of controller board. this is still vague in my head. It seems I can buy only a touch screen, and I would put a color screen behind, or I could buy one with an all in one.

What kind of programing do I need? What controller would be best to be able to control the screen and touch screen with the music, videos and the system to control this gadget?

Any help or information, comments are appreciated:wink:


Sam, Always trying to do what I can't :rolleyes:

09-30-2008, 03:59 PM
Might check out the Gumstix line. They offer a touchscreen color LCD screen for fairly cheap, and it interfaces directly to one of the Gumstix controller boards. Programming a media player from there would be easy since the LCD acts like a monitor for the Gumstix embedded PC.

09-30-2008, 04:01 PM
There are touch screens out there alot of them mostly for industial purposes. These are expensive. The kind that apple uses for example are most likly custom made for them and since they sell so many millions the price is acceptable but to buy one? I dont even know what it would cost.

The programming would depend on the screen that you do get. Different manufactures different programming. You could try to find a busted Ipod and harvest the screen. Im sure ther are lots of websites that explain or show how to do this plus examples of programing. Check EBAY sometimes ther some good stuff out there.

I tried to do this myself once as well but couldnt justify the cost when you have an already built IPOD or other brand alerady made.


09-30-2008, 04:30 PM
Our pals Sparkfun have many touch screen choices:

Check this little unit out:


Description: Large ARM7 LPC2478 development board that comes with a great looking TFT display with touch screen mounted within a durable stainless steel shield. 4 LEDs and 3 buttons are available on the front side as well.


MCU: LPC2478
LCD 3.5" 320x200 24bit color TFT color with backlight and touchscreen
MP3 decoder DSP + codec VS1002D
3-axis digital accelerometer with 11 bit accuracy
USB host connector
USB device connector
IrDA transciever (optional)
MICTOR trace connector (optional)
PS2 keyboard connector
100Mbit Ethernet
CAN driver and connector
RS232 with ICSP control
SD/MMC card connector
JTAG connector
Reset button and circuit
2 buttons
1 trimpot
UEXT connector
Audio IN
Audio OUT
RTC battery
FR-4, 1.5 mm, red soldermask, component print

09-30-2008, 09:04 PM
Thanks for the info guys!

I found this one looking a bit more :


It looks like it can stand alone (no computers or other seperate controllers).

Waht do you guys think? I need it to be pretty small. It looks ok, the screen is as big as the board, so it's nice.

I don't think it has accelorometer, but still :tongue:

09-30-2008, 09:09 PM
The one Matt quoted already has an MP3 decoder, the one you mentioned will need to be built onto a board with a decoder at least.