I have a 2,4 TFT Display with a SD Card slot and a Barometer. I want to build an weather station thats shows some pictures at some weather conditions.
I started the project with my UNO but now I see, that I need second PINs for the SCL and SDA because the SD Card needs this two and the Barometer.
Can you tell em which Board I should use for that?
I though about a MEGA so I can use a TFT LCD Shield and don't have to solder the display but that board has only one SDA/SCL too.
You should post links to the specs of the components you want to use. Please read the forum guide in the sticky post at the top of the forum section to learn about things you should include in your post.
however, if you look on web sites which sell this type of display, e.g. 240X320 Resolution 2.8" SPI TFT LCD Display Touch Panel ILI9341 with PCB 5V/3.3V STM32 you will find the statement
Note: If you are using this LCD with a 5V device such as an Arduino, be aware that it doesn't work if WITHOUT level shifting to 3.3v logic. Please use level shifters from 5V to 3.3V, it will work then
indicating that if you interface this display to a microcontroller using 5V logic, without using level shifters, you may damage the display
Yes, enough to protect the display while you find out if it works.
You need to use 2 resistors to make a voltage divider. 4K7 and 10K are often used to reduce 5V down to approximately 3.3V. You will need one pair for the SCK line and one pair for the MOSI line.