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What is ESP12E WiFi Module

TEsp-12e is a micro Wi Fi module available on the market, which is used to establish wireless network connection for microcontroller or processor. Today we will introduce the wifi module–ESP12E.

What is ESP12E

TIP120 is an NPN Darlington transistor, which is mainly used in general-purpose amplification and medium power swESP-Esp-12e is a micro Wi Fi module available on the market, which is used to establish wireless network connection for microcontroller or processor. The core of esp-12e is esp8266ex, which is a highly integrated Wireless SoC (system on chip). It has the function of embedding the Wi Fi function into the system or running as an independent application. This is a low-cost solution for developing Internet of things applications.

ESP-12E WiFi module is developed by Ai-thinker Team. core processor ESP8266 in smaller sizes of the module encapsulates Tensilica L106 integrates industry-leading ultra low power 32-bit MCU micro, with the 16-bit short mode, Clock speed support 80 MHz, 160 MHz, supports the RTOS, integrated Wi-Fi MAC/BB/RF/PA/LNA, on-board antenna. The module supports standard IEEE802.11 b/g/n agreement, complete TCP/IP protocol stack. Users can use the ESP8266 is high integration wireless SOCs, designed for space and power constrained mobile platform designers. It provides unsurpassed ability to embed Wi-Fi capabilities within other systems, or to function as a standalone application, with the lowest cost, and minimal space requirement.

ESP12E datasheet

ESP12E Pinout &Configuration


ESP12E has twenty-two terminals, as shown in the table.

1RSTReset Pin of the module
2ADCAnalog Input Pin for 10-bit ADC (0V to1V)
3ENModule Enable Pin (Active HIGH)
4GPIO16General Purpose Input Output Pin 16
5GPIO14General Purpose Input Output Pin 14
6GPIO12General Purpose Input Output Pin 12
7GPIO13General Purpose Input Output Pin 13
8VDD+3.3V Power Input
9CS0Chip selection Pin of SPI interface
10MISOMISO Pin of SPI interface
11GPIO9General Purpose Input Output Pin 9
12GPIO10General Purpose Input Output Pin 10
13MOSIMOSI Pin of SPI interface
14SCLKClock Pin of SPI interface
15GNDGround Pin
16GPIO15General Purpose Input Output Pin 15
17GPIO2General Purpose Input Output Pin 2
18GPIO0General Purpose Input Output Pin 0
19GPIO4General Purpose Input Output Pin 4
20GPIO5General Purpose Input Output Pin 5

ESP12E Features

  • Wireless Standard: IEEE 802.11 b/g/n protocol
  • Power Transmission:
802.11b+16 ± 2 dBm
802.11g+14 ± 2 dBm
802.11n+13 ± 2 dBm
  • Frequency Range: 2.412 – 2.484 GHz
  • Serial Transmission: 110 – 921600 bps, TCP Client 5
  • SDIO 2.0, SPI and UART Interface available
  • PWM available
  • One ADC channel available
  • Programmable GPIO available
  • Wireless Network Type: STA / AP / STA + AP
  • Security Type: WEP / WPA-PSK / WPA2-PSK
  • Encryption Type: WEP64 / WEP128 / TKIP / AES
  • Network Protocol: IPv4, TCP / UDP / FTP / HTTP
  • Operating Voltage: 3.3V
  • Maximum current allowed to draw per pin: 15mA
  • Power down leakage current of < 10uA
  • Integrated low power 32-bit MCU
  • Onboard PCB Antenna
  • Wake up and transmit packets in < 2ms
  • Standby power consumption of < 1.0mW
  • Operating Temperature: -40ºC to +125 ºC

How does a ESP12E WiFi module work?

As we have said at the beginning, Esp-12e is a member of the “esp-xx” series. Although they are based on esp8266 SOC, they are different in output pin, flash memory and antenna type. These modules, numbered from esp-01 to esp-15, are the best in terms of performance and cost. Many engineers use these modules to establish wireless communication between two applications. For data sharing and the Internet of things, you will find these modules ideal.

ESP12E Applications

  • weather station
  • Internet of things applications
  • Household Electric Appliances
  • Wireless control system
  • Toys and game applications
  • Security ID label
  • Home automation

How to use ESP12E WiFi Module

TIP120 transistors are known for their high current gain (hfe = 1000) and high collector current (IC = 5A), so they are oWe will build a simple application circuit to understand how the module works.

  1. Connect a positive + 3.3V power supply to the module.
  2. Use UART to connect the module to microcontroller or Arduino (connect RXD of ESP to RXD of µ C and TXD of ESP to TXD of µ C).
  3. Download the library of the module from the Internet. For Arduino, the IDE will pre install the library. If you don’t have them, just update the library from the Arduino website.
  4. Write a program to set the baud rate and data exchange.
  5. Send data to the module for transmission over Wi Fi or receive data from the module for transmission over Wi Fi.
  6. Another way to set up the module is to bypass the microcontroller and use ftdi to connect the module directly to the PC. When the interface is connected, you can use the serial monitor to communicate with the module

That’s all for today. Hope you enjoyed this article. However, if you have doubts or have any questions about this, you can contact me in the comments section below. I’ll be happy to help you as best I can. Let us know your feedback and suggestions at any time, they allow us to provide you with high-quality work that responds to your needs and expectations, and helps you continue to give back to our products. Thank you for reading this article.


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