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Topic: speedometer on TFT LCD with arduino mega 1280 HELP! (Read 4978 times) previous topic - next topic


I'm new in arduino world.
I have an arduino mega 1280, bought recently.
I want to buy a 3.2" or 2.8" TFT LCD (with touch screen) but i don't know who works with my arduino.
I want to display on this lcd the speed of my car and RPM , so i need a fast refresh (for small areas).
I find some models on ebay but please give me an indication who is easy to connect(less wire) and who is easy to develope it.
I saw more of them works with ILI93XX or HX8347 IC Driver.
Those are what i find:
1. http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=220693194576&ssPageName=STRK:MEWAX:IT
2. http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=110639823083&ssPageName=STRK:MEWAX:IT
3. http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=280558226914&ssPageName=STRK:MEWAX:IT
4. http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=280575347222&ssPageName=STRK:MEWAX:IT
5. http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=320606628830&ssPageName=STRK:MEWAX:IT
6. http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=200475566068&ssPageName=STRK:MEWAX:IT
If exists a library for one of them it will be easy for me.
Other problem who i have is resolution. All of them(lcd's from links) have 320 on vertical direction , and i need 320 on horizontal direction. It is possible to setup this from code, for this types of tft lcd?
Thanks a lot for your helps.


Have a look at the 4Dsystems screens http://www.4dsystems.com.au/, they can be used H or V and only need a serial port to interface.

Rob Gray aka the GRAYnomad www.robgray.com


I believe that 1, 4, 5 and 6 are the same display.

From what I can see they should be compatible with my library: http://www.henningkarlsen.com/electronics/a_l_itdb02_graph16.php



Graynomad - thanks a lot for your time, but i saw thet type of lcd is to expensive.

DOC_Norway - thank you too.this library i knew it but i think it works only i have the itdb20 shield for this lcd, but i don't need it because on my arduino mega i have another 2 lcd 20X4 char , 6 temp sensors , 2 pressure , on db1307 real clock , one light shield. But if you think i can use this library directly with this type of tft lcd , connected on my arduino(after my calculation i need 24 digital pins), it is ok fo me.Do you think can i modify direction 320vertican in horizontal like i need?

Thanks a lot.


My library supports landscape mode (=320x240), but remember that the display operates at 3.3volts, so you need levelshifters for all signal wires.



Thanks henning.
I'm the same person who write on email address.
I bought the lcd last night from ebay.
Please tell me if i put a 10K resistor, like you said, on each pins from lcd to arduino (in serial connection not paralel) it is ok?
Thanks again.

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