ESP8266 ESP-01 ESP01 Serial Wireless WIFI Module For Arduino Transceiver Receiver Adapter Board Raspberry Pi UNO R3 One 3.3V 5V

The ESP8266 ESP–01 is a Wi-Fi module that allows microcontrollers access to a Wi-Fi network. … Thus, we can give a microcontroller internet access like the Wi-Fi shield does to the Arduino, or we can simply program the ESP8266 to not only have access to a Wi-Fi network, but to act as a microcontroller as well.

ESP-01 WiFi Module

These modules include 1MB (8Mbit) of flash memory, twice the size of the older blue colored ESP-01 module
The ESP8266 Serial/UART to WiFi module is a great way to connect your Arduino or other microcontroller projects to a WiFi network
Create your next internet of things (IOT) project with affordable network connectivity by implementing this module into your design
The module has the ability to run independent of a host controller
The eight pin header includes two GPIO pins that allow for direct connection of the module to sensors, peripherals, or host controller
Check out our ESP8266 breadboard adapter to use your ESP8266 module with a breadboard
The ESP8266 has 3.6V tolerant I/Os so you will need a logic level converter to connect it with higher voltage devices such as Arduino
The ESP8266 requires 3.3V power so you may need a 3.3V voltage regulator to provide the correct voltage, depending on your setup

            Features

• 11 b/g/n
• Integrated low power 32-bit MCU
• Integrated 10-bit ADC
• Integrated TCP/IP protocol stack
• Integrated TR switch, balun, LNA, power amplifier and matching network
• Integrated PLL, regulators, and power management units
• Supports antenna diversity
• Wi-Fi 2.4 GHz, support WPA/WPA2
• Support STA/AP/STA+AP operation modes
• Support Smart Link Function for both Android and iOS devices
• Support Smart Link Function for both Android and iOS devices
• SDIO 2.0, (H) SPI, UART, I2C, I2S, IRDA, PWM, GPIO
• STBC, 1×1 MIMO, 2×1 MIMO
• A-MPDU & A-MSDU aggregation and 0.4s guard interval
• Deep sleep power <10uA, Power down leakage current < 5uA
• Wake up and transmit packets in < 2ms
• Standby power consumption of < 1.0mW (DTIM3)
• +20dBm output power in 802.11b mode
• Operating temperature range -40C ~ 125C

         Pin Descriptions

There are altogether 8 pin counts, the definitions of which are described in Table 2 below。

Table 2 Pin Descriptions

 Table 3 Pin Mode

         Packaging and Dimension

The external size of the module is 14.3mm*24.8mm*3mm, as is illustrated in Figure 3 below. The type of flash integrated in this module is an SPI flash, the capacity of which is 1 MB, and the package size of which is SOP-210mil.

The antenna applied on this module is a 3DBi PCB-on-board antenna.

Table 5 Dimension of ESP-01 WiFi Module