ESP8266 WIFI Chip 0.91″ Inch OLED Display Development Board. The main chip using ESP8266, with CP2014USB to serial chip, lithium battery interface and charge and discharge circuit, 32MByte Flash, WIFI antenna, 0.91-inch OLED display. Can be programmed in and NodeMCU environments. Operation is consistent with NodeMCU. Leads all pins of ESP8266 12 digital pins can be configured to read, write, IIC, SPI, the middle, PWM and other functions 1 AD input Technical Specifications: Working voltage: 3.3V ~ 7V Board size: 50.86×18.2×6.69mm Screen size: 30×11.5mm Flash: 32Mbyte. Master chip: ESP8266. OLED: 0.91 inch /128 * 32. USB adapter chip: CP2102. Operating temperature: -40-90 Celsius. Support mode: softAp, station, softAp station, WIFI-Direct. Output power: 19.5 dBm @ 11b,16.5 dBm @ 11g, 15.5 dBm @ 11n. Package Includes: 1 Piece- ESP8266 WIFI Chip 0.91″ Inch OLED Display Development Board
