Check the listing for details. Whats Next? Microcontroller Board Based ATmega328 and ESP8266 Wi-Fi Chip WN00009. Condition: New. Listed at 10.25 USD. Condition: NEW Warranty:Prime 30 Day Warranty Whats Next? Microcontroller Board Based ATmega328 and ESP8266 Wi-Fi Chip WN00009 Whats Next Uno Wifi Microcontroller board based on the ATmega328 and ESP8266 Wi-Fi chip. For beginner and advanced users alike. If you are starting out with IoT, this is the board to get. It has 20 digital input/output pins (up to 6 can be used as PWM outputs and up to 6 as analog inputs), a 16MHz clock, a USB connection, TWI, SPI, UART interfaces, a power jack, an ICSP header, and a reset button. Fully Arduino compatible. The ESP8266 Wi-Fi module is a self contained SoC with integrated TCP/IP protocol stack which can be used to connect to your Wi-Fi network or act as an access point. The Red supports OTA (over-the-air) programming, enabling wireless download of sketches and Wi-Fi firmware. InterfacesSerial - 1xUART (shared w/ USB), 1xSPI, 1xTWIUSB - 2.0 deviceWi-Fi - 802.11 b/g/n 2.4GHzGeneralInput Voltage - 5V (USB/ext.) or 7~12V (Vin)Power Consumption - 120mAPCB size - 53mm x 68.5mmWeight - 25gMicrocontrollerMicrocontroller - ATmega328Architecture - Microchip AVR 8-bitOperating Voltage - 5VFlash Memory - 32kB (2kB as bootloader)SRAM - 2kBEEPROM - 1kBClock Speed - 16MHzI/O Total - 20Digital (max) - 20PWM (max) - 6Analog (max) - 6 (10-bit resolution)DC Current per I/O pins - 40mA (I/O pins)Wi-Fi peripheralMicrocontroller - ESP8266EXArchitecture - Tensilica L106External FLASH - 64Mbit