KS0339 Keyestudio 8266 WIFI Module 2PCS

keyestudio 8266 WIFI Module (2PCS)

Product Overview

Overview:

The package includes 2pcs of ESP8266 WIFI module.
It is an ultra-low-power UART-WiFi pass-through module with industry-leading package size and ultra-low power technology.
It is specially designed for mobile devices and IoT applications. It can connect users' physical devices to Wi-Fi wireless network for Internet or LAN communication, achieving the networking function.

Features:

• 1)Support wireless 802.11 b/g/n standard
• 2)Support three working modes: STA/AP/STA+AP
• 3)Built-in TCP/IP protocol stack to support multiple TCP Client connections
• 4)Support various Socket AT commands
• 5)Support UART/GPIO data communication interface
• 6)Support Smart Link intelligent networking function
• 7)Support remote firmware upgrade (OTA)
• 8)Built-in 32-bit MCU, able to double as an application processor
• 9)Ultra low consumption, suitable for battery powered applications.
• 10) 3.3V single power supply

Basic Parameters:

Hardware Introduction:

ESP8266 hardware has plentiful interfaces, and can support UART，IIC，PWM，GPIO，ADC and more, suited for mobile devices and IoT applications.

• Module pins diagram:

• Pins definition:

Power Consumption:

The following measured power consumption data is based on a 3.3V power supply at 25°ambient temperature.

• 1. All measurements are done at the antenna interface.
  
• 2. All transmit data is based on a 90% duty cycle and measured in continuous transmission mode.

Radio Frequency Indicator:

The following data are measured at indoor temperature when the voltage is 3.3v.


Note: 1. 72.2Mbps is measured in 802.11n mode，MCS=7，GI=200uS.
2.The output power of up to +19.5dBm can be reached in 802.11b mode.

Function Description

Main Function:

ESP8266 can realize the main functions as follows:

• Serial port passthrough: data transmission, good reliability of transfer; the maximum transmission rate is up to 460800bps.
  
• PWM regulation and control: light adjustment, RGB LED adjustment, motor speed control and more.
  
• GPIO control: control the switches, relays and more.
  

Working Mode:

ESP8266 module supports three working modes: STA/AP/STA+AP

• STA mode: The ESP8266 module can access to the Internet through a router, so the mobile phone or computer can remotely control the device through the Internet.
  

• AP mode: The ESP8266 module acts as a hotspot to enable communication directly with the mobile phone or computer to achieve wireless control of the local area network (LAN).
  

• STA+AP mode: The coexistence mode of the above two modes, that is, can achieve the seamless switching through the Internet control, more convenient for operation.
  

Applications:

• 1)Serial port CH340 to Wi-Fi;
• 2)Industrial transparent transmission DTU;
• 3)Wi-Fi remote monitoring/control;
• 4)Toy field
• 5)Color LED control;
• 6)Integrated management of fire protection and security intelligence;
• 7)Smart card terminals, wireless POS machines, Wi-Fi cameras, handheld devices, etc

Basic AT Commands

Test the AT

• Syntax Rules:

WiFi Function AT Command

Select WiFi Application Mode: AT+CWMODE

• Syntax Rules:

• Parameter Definition:

List out Access Point: AT+CWLAP

• Syntax Rules:

• Parameter Definition:

Add Access Point: AT+CWJAP

• Syntax Rules:

• Parameter Definition:

Exit Access Point: AT+CWQAP

• Syntax Rules:

Set the AP Mode: AT+CWSAP

• Syntax Rules:

• Parameter Definition:

TCPIP AT Command

Build TCP/UDP Connection: AT+CIPSTART

• Syntax Rules:

• Parameter Definition:

Get TCP/UDP Connection Status: AT+CIPSTATUS

• Syntax Rules:

• Parameter Definition:

Start Multilink: AT+CIPMUX

• Syntax Rules:

• Parameter Definition:

Send Data: AT+CIPSEND

• Syntax Rules:

• Parameter Definition:

Close TCP/UDP Connection: AT+CIPCLOSE

• Syntax Rules:

• Parameter Definition:

Get Local IP Address: AT+CIFSR

• Syntax Rules:

• Parameter Definition:

Select TCPIP Mode: AT+CIPMODE

• Syntax Rules:

• Parameter Definition:

Set the Sever Timeout: AT+CIPSTO

• Syntax Rules:

• Parameter Definition:

Set the Baud Rate: AT+CIOBAUD

• Syntax Rules:

• Parameter Definition: