Description Example include include OLED h TTGO 0 91s OLED connection SDA D4 SCL D5 RST D2 OLED display SDA SCL void setup pinMode D2 OUTPUT digitalWrite D2 LOW turn D2 low to reset OLEDdelay 50 digitalWrite D2 HIGH while OLED is running must set D2 in highSerial begin 9600 Serial println OLED test Initialize displaydisplay begin Test messagedisplay print Hello TTGO delay 3 1000 Test long messagedisplay print Lorem ipsum dolor sit amet consectetur adipiscing elit sed do eiusmod tempor incididunt ut labore et dolore magna aliqua delay 3 1000 Test display cleardisplay clear delay 3 1000 Test message postioningdisplay print TOP LEFT display print 4th row 4 display print RIGHT BOTTOM 7 4 delay 3 1000 Test display OFFdisplay off display print 3rd row 3 8 delay 3 1000 Test display ONdisplay on delay 3 1000 int r 0 c 0 void loop r r 4 c micros 6 if r 0 display clear display print Hello TTGO r c delay 500 Package included 1 x TTGO ESP8266 0 91 Inch OLED ForNodemcu1 x cable2 x normal pin