1/2/4/8 Channel ESP8266 Wireless WIFI Relay Module ESP-12F Development Board AC/DC 5V/7-28V/5-80V E-WeLink APP Remote Control
Warn：The 2/4/8 channel ESP8266 ESP-12F Wifi Development Board Cannot Be Controlled By The E-WeLink APP
Function:
1. Onboard mature and stable ESP-12F WIFI module, large capacity 4M BYTE FLASH;
2. The I/O port of the WIFI module and the UART program download port are all led out to facilitate secondary development;
3. Onboard AC-DC switching power supply module, power supply mode supports AC90-250V/DC7-30V/5v;
4. Onboard WIFI module RST reset button;
5. ESP-12F supports the use of development tools such as ECLIPSE/ARDUINO IDE, and provides ARDUINO Reference program in the development environment;
6. Onboard 4 5V relays, output switch signal, suitable for controlling the working voltage of AC Load within 250V/DC 30V;
7. On-board power indicator, 1 programmable LED and relay indicator.
Burning port:
The GND, RX, TX, and 5V of ESP8266 are respectively connected to the GND, TX, RX, of the external TTL serial port module
5V, IO0 needs to be connected to GND when downloading, and then disconnect the connection between IO0 and GND after downloading;
Arduino development environment construction
ESP8266 supports development tools such as Eclipse/Arduino IDE. It is relatively simple to use Arduino. The following is how to build an Arduino development environment:
1. Install Arduino IDE 1.8.9 or the latest version;
2. Open the Arduino IDE, click File--Preferences in the menu bar, and click Add URL in "Additional Development Board Manager URLs" after entering the preferences: http://arduino.esp8266.com/stable/package_esp8266com_index.json,
Relay output:
NC: Normally closed, the relay is short-connected with COM before it is closed, and it is suspended after being closed;
COM: public end;
NO: Normally open end, the relay is suspended before being closed, and shorted to COM after being closed.
Package included:
1 × ESP8266 WIFI 2 Channel/4 Channel /8 Channel Relay Module ESP-12F Wifi Development Board
