Thank you.You can damage TFT LCD displays quite easily by connecting them up incorrectly. I recommend that you find a tutorial on line that will instruct you on how to connect the displays and program an arduino to drive them.There are many different sizes of displays that use a number of different driver chips, so make sure the tutorial is for the type that you have. An example of wording for an online search is "arduino, 1.8" TFT LCD display tutorial" but use the description of your displays.
Thanks.hi Adam .
Which TFT type are you using, I have done a few TFT type projects with Arduino's OK.
hi,I am using 3.3v from Arduino, no level shifter module for the pins yet, can make up by adding resistance?
I guess you mean you are powering the Arduino with 5V and the TFT from the Arduino's 3.3V output pin.?
Yes, Use 2K and 3k3, in series, that is 5V* (3k3/5k3) = 3.11V Signal lines...
So 5V Output pins from UNO to the top end of the 2k , the junction of the 2k and 3k3 to the TFT control pins and the bottom end of the 3k3 to 0V.
Do you follow that OK.?
Thanks.Where you can get into trouble is with analog signal scaling as it is based on a 5V signal but can be rescaled for a 3.3V signal through the software. The AVR Vcc is rated for 1.6V - 5.5V.
Thanks.For a 3.3V only Arduino the digital output will be 3.3V Hi and 0V Lo. I have quite a few reference books and they are a bit short on 3.3V information on the mixed voltage cards other than what I posted and even less on 3.3V only cards. My TFT screens that I experimented with were 5V.
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by Jake Hertz