Hi. Today I show you how to use OLED Display with Arduino UNO . first of all, you need an Arduino board and an OLED Display. OLED DISPLAY There are many types of OLED displays by color & type of connection. In this experiment, I used a 128*64 blue color SPI OLED display. Arduino Board In this experiment, I used Lakduino UNO which is an Arduino compatible board . But you can use any Arduino board for this like pro, Nano, Leonardo etc. Connecting Display to Arduino My OLED Display has 7pins. OLED Arduino GND -------> GND VCC -------> 3.3v CLK -------> D12 MOSI -------> D11 RES -------> D10 DC -------> D 9 CS -------> D 8 * However, my display worked without connecting GND and VCC. Compile and upload code to Arduino now we're going to upload the code for Arduino. to do this you need Arduino IDE , Adafruit-GF