marxy's musing on technology: Arduino ESP8266 with on board OLED display
ESP8266 0.96 inch OLED Display with Arduino IDE | Random Nerd Tutorials
Amazon.com: NodeMCU ESP8266 Development Board with 0.96 Inch OLED Display, CH340 Driver, ESP-12E WiFi Wireless Module, and Micro USB Works Great for Arduino IDE/Micropython Programming (Pin Header Soldered) : Electronics
0.96" OLED ESP8266 NodeMCU Development Board Wifi Module CH340C Driver Module UK | eBay