I've got a 2.2 SPI monitor (QVGA TFT monitor & SD Card), but I am using Arduino UNO board. All pins are 5V. How can I use a resistor to communicate between TFT, SD and UNO?
I have lots of different Ohm resistors, and have 3 Logic Level Converter (non bi-direction).
I try the LLC connect to TFT, but no luck, it just has the backlight ON, nothing I can see.
Thanks TJ, I had wired with this circuit, but the voltage seems not enough 3V. Am I something go wrong?
Also, I have try to change R1 to 330 ohm & R2 to 680 ohm. Seems also cannot convert to 3V / 3.3V