ESP8266 ESP-01 5V 12V 1 Way Channel WiFi Relay Module Things IOT Smart Home Remote Control Switch ESP01 WIFI Wireless Module Phone APP
Product introduction:
The WiFi relay module is equipped with an ESP8266 WiFi module and a microcontroller, which can send serial commands to the module through the mobile phone APP to implement wireless control of the relay in the local area network.
Product parameter:
Onboard module: Onboard ESP8266 WIFI module, can connect 5 clients at the same time in AP mode
Module working mode:
(1) The mobile phone is directly mounted on the WIFI module;
(2) The mobile phone and WIFI module are mounted on the router at the same time.
Transmission distance:
(1) In an open environment, when the mobile phone is mounted on the WIFI module, the maximum transmission distance is 400m;
(2) When the WiFI module and mobile phone are installed on the router at the same time, the transmission distance depends on the signal strength of the router;
On-board relay: On-board 5V/12V, 10A/250V AC 10A/30V DC relay, which can pull in 100,000 times continuously, with diode bleed protection, short response time;
Applicable phones: Android phones, Apple is not suitable
Interface introduction:
IN+, IN-: 12V/5V power input
TX, RX, GND: serial debugging pins
Instructions for use:
1. There are three working modes for the onboard ESP8266 WIFI module: STA (client), AP (hotspot), STA+AP (client+hotspot), and select the working mode of the WIFI module according to the working mode of the module .
2. The module needs to use serial debugging software and USB to TπL module on the computer to send AT commands to configure the WIFI module. The RX, TX and GND pins of the USB to TTL module are connected to the TX, RX and GND pins on the module. IN+, IN- connect to 5V11 2V power supply.
3. The default baud rate of the WIFI module is generally 115200 or 9600, which can be modified by sending AT commands, such as: AT+CIOBAUD=115200. It is recommended to use 115200 in a situation, but 9600 is required when using a mobile phone to control the relay. Because the baud rate of the MCU (STC15F 104W) onboard the module is 9600.
Working mode-(The mobile phone is directly mounted on the WIFI module), open the serial debugging software on the computer and send AT commands to configure the WIFI module in the following order:
1, AT+CWMODE=2, select AP mode;
2, AT+RST, reset;
3, AT+CIPMUX=1, open multiple connections;
4, AT-CIPSERVER=1 ,8080, start TCР service, set the port number;
5, AT+CIFSR, check the IP address in AP mode, such as: APIP, "192.168.4.1;
6. AT+CIOBAUD=9600. Set the baud rate to 9600.
Note: When setting the baud rate, please send AT+UART_CUR=9600,8,1,0,0 to be effective, send
AT+CIOBAUD=9600 will return an error
7. Use your Android phone to connect to the hotspot (AP) signal from the WIFI module
8. Install the "EasyTCP_20" APP on the Android phone, click "connect" to enter the IP address and port number
9. Long press the function block in the APP interface, enter the content and name of the instruction (A00101A2 turns on the relay, A00100A1 turns off the relay, the format of the instruction is hexadecimal (hex))
10. Click the function box to send serial commands to control the relay through the mobile phone
Working method two (mobile phone and WIFI module are installed on the router at the same time), open the serial debugging software on the computer, and send AT commands to configure the WIFI module in the following order:
1, AT+CWMODE=1, select STA mode;
2. AT+RST, reset;
3. AT+CWJAP=<ssid>, <password>, connect the WIFI module to the router, for example: AT+CWJAP="LCTECH","12345678";
4, AT+CIPMUX=1, open multiple connections;
5. AT+CIPSERVER=1,8080, open the TCP service, set the port number:
6, AT+CIFSR, check the IP address in STA mode, such as: STAIP, "192.168.1.103";
7, AT+CIOBAUD=9600, set the baud rate to 9600.
8. Connect the phone to the router
9. Install the "EasyTCP_20" APP on the Android phone, click "connect" to enter the IP address and port number
10. Long press the function block in the APP interface, enter the content and name of the instruction (A00101A2 turns on the relay, A00100A1 turns off the relay, the format of the instruction is hexadecimal (hex))
11. Click the function block to send the serial port command through the mobile phone to control the relay
Note:
1. If the WIFI module is powered off and restarted, it needs to re-send AT command for configuration.
2. The ESP8266 module has a timeout mechanism. When the phone does not send a command to the module for a certain period of time (180S by default), the module will kick the phone off, which can be modified by sending AT+CIPSTO=<time> on the computer This time (time range 0-7200), such as: AT+CIPSTO=3600.
3. If there is no response when sending the AT command, the baud rate of the serial debugging software may be wrong, generally 115200 or 9600; if what is sent when sending the AT command returns nothing, and it does not return OK, it may be necessary to check "Send New line" or after entering the AT command, press the "ENTER" key and then click "Send".
4. If you want to directly use the serial port debugging software on the computer to control the relay, you can unplug the WIFI module on the module, and connect the RX, TX and GND pins of the USB to TTL module to the RX, TX and GND pins on the module, IN+ 、IN- connect to 12V power supply, send A00101A2 to open the relay in hexadecimal form (hex), A00100A1 to close the relay.
5. If the relay cannot be closed or opened normally, you may need to remove the resistor R4 on the module and connect the VCC pin of the USB to TTL module to the 5V pin of the relay module.
