1. WiFi adopts an industrial grade chip ESP8266, with a module of ESP-13 with a metal shielding cover, which has strong anti-interference ability;
2. The standard pins are compatible with main control boards such as Arduino Uno and Mega2560. The connection between Arduino and UNO uses a voltage conversion chip, making 3.3V and 5V compatible;
3. The serial port is controlled by a dual toggle switch, allowing the expansion board to be used as either an Arduino Uno expansion board alone or an ESP8266 expansion board;
4. True serial WiFi, Arduino program does not require any configuration;
5. Configure WiFi parameters and serial port parameters based on Web Server;
6. Can be used as an independent ESP8266 development board, downloading official AT command firmware, NodeMCU open-source firmware, etc;
7. Can be used as an independent Arduino Uno expansion board, with all pins pulled out.
technical specifications
1. Supports wireless 802.11 b/g/n standard;
2. Supports two working modes: STA/AP;
3. Built in TCP/IP protocol stack, can configure a socket;
4. Support standard TCP/UDP Server and Client;
5. Serial baud rate support: 1200/2400/4800/9600/19200/38400/57600/74800/115200 bps;
6. Serial port data bits: 5/6/7/8 bits;
7. Serial port parity check: none;
8. Serial port stop bit: 1/2 bit;
9. Standard Arduino UNO and Mega pin spacing;
10. Introduce Arduino Pin 2/3/4/5/6/7/8/9/10/11/12/13;
11. Introduce ESP8266 GPIO 0/2/4/5/9/10/12/13/14/15/16/ADC/EN/UART TX/UART RX;
12. RESET reset;
13. KEY button reuse configuration function;
14. Two digit toggle switch for Arduino and ESP8266 serial port expansion switching;
15. WiFi working current: continuous transmission: ≈ 70mA (200mA MAX), standby:<200uA;
16. Wireless transmission rate: 110-460800bps;
17. Working temperature: -40 ℃~+125 ℃
18. Module weight: approximately 20g
ESP8266 Arduino expansion board: 1pcs
