ESP8266 Nodemcu WIFI Chip 0.91 inch OLED Display Screen CP2104 Board For Arduino
Leads all the pins of ESP8266. the operation is consistent with NodeMCU. OLED LED&RGB. digitalWrite(D2, LOW); // turn D2 low to reset OLED. digitalWrite(D2, HIGH); // while OLED is running, must set D2 in high.