WiFi ESP Click Board™

Product Code: MIKROE-2542

The WiFi ESP Click Board™ carries the ESP-WROOM-02 module that integrates ESP8266EX. The click is designed to run on a 3.3V power supply. It communicates with the target microcontroller over UART interface and the following pins on the mikroBUS™ line: RST, CS. ACCESS POINT AND WIFI CLIENT MODE WiFi ESP click can function in both AP (Access Point) WiFi mode, as well as in WiFi client mode. The click brings easy implementation and usage. The module supports the following network protocols: IPv4/TCP/UDP/HTTP/FTP. Thanks to this the click can operate as a client device requesting a file from a file server device (FTP - file transfer protocol) in local network systems, or request a web page via internet (IP/TCP/HTTP). It can also be used as a small web server, for example a wireless weather station prototype, etc. Station mode is default when the click is in WiFi client mode. ESP-WROOM-02 MODULE FEATURES ESP-WROOM-02 carries ESP8266EX highly integrated Wi-Fi SoC solution to meet the continuous demands for efficient power usage, compact design and reliable performance in the industry.

Besides the Wi-Fi functionalities, ESP8266EX integrates an enhanced version of Tensilica's L106 Diamond series 32-bit processor and on-chip SRAM. As well as antenna switches, RF balun, power amplifier, low noise receiver amplifier, filters and power management modules. With the complete and self-contained Wi-Fi networking capabilities, it can perform as either a standalone application (WROOM module itself) or the slave to an MCU host which is the primary intention of the click board as a whole. So, this click board is applied to any microcontroller design as a Wi-Fi adaptor through UART interface (RX,TX lines on mikroBUS pin socket). For more information see the datasheet. ADVANCED USAGE There are additional pad headers onboard (HSPI/GPIO interface of the module) for advanced usage. For more information see the Documentation tab. SPECIFICATIONS Type WiFi Applications Create smart appliances, home automation systems, wireless data loggers, etc On-board modules ESP-WROOM-02 carries ESP8266EX highly integrated Wi-Fi SoC Key Features Protocols: IPv4, TCP/UDP/HTTP/FTP, 802.11 b/g/n standard, UART interface, 3.3V power supply Interface GPIO,UART Compatibility mikroBUS Click board size M (42.9 x 25.4 mm) Input Voltage 3.3V PINOUT DIAGRAM This table shows how the pinout of the WiFi ESP Click Board™ corresponds to the pinout on the mikroBUS™ socket (the latter shown in the two middle columns). Notes Pin Pin Notes NC 1 AN PWM 16 NC HW Reset RST 2 RST INT 15 NC Chip enable (active high) EN 3 CS TX 14 TX UART0_TXD / Transmit end in UART download (program) mode NC 4 SCK RX 13 RX UART0_RXD / Receive end in UART download (program) mode NC 5 MISO SCL 12 NC NC 6 MOSI SDA 11 NC Power supply +3.3V 7 3.3V 5V 10 NC Ground GND 8 GND GND 9 GND Ground ADDITIONAL PINS Name I/O Description CLK IO HSPI_CLK / GPIO14 SDO IO HSPI_MISO / GPIO12 SDI IO HSPI_MOSI / GPIO13 CS IO HSPI_CS / GPIO15 IO0 IO GPIO0 (UART download mode - pull down, Flash boot - pull up) GND GND BUTTONS AND LEDS Designator Name Type (LED, BUTTON…) Description LD1 PWR LED Power Supply ON