New Version NodeMCU LUA WiFi Internet of things ESP8266 ESP-12E Development
Review: 5 - "A masterpiece of literature" by , written on May 4, 20020

New Version NodeMCU LUA WiFi Internet of things ESP8266 ESP-12E Development

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  • Product SKU: KG164
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ESP8266 ESP-12E Development Controllers are easy to program by using the CP2102-USB interface without having to press the flash and reset buttons before each flash operation. The development board has GPIO, PWM, IIC, 1-wire, and ADC integration all in one board. Compatible with smart link smart grid. The fast and affordable technology for WiFi. Make your development the fastest way combined with firmware for NodeMcu.

The ESP8266EX integrates a Tensilica L106 32-bit RISC processor which achieves extra-low power consumption and reaches a maximum clock speed of 160 MHz. The Real-Time Operating System (RTOS) and Wi-Fi stack allow 80% of the processing power to be available for user application programming and development.


  • 32 KB instruction RAM
  • 80 KB user data RAM
  • 16 KB ETS system data RAM
  • External QSPI flash: up to 16 MB is supported (512 KB to 4 MB typically included)
  • IEEE 802.11 b/g/n Wi-Fi
  • Integrated TR switch, balun, LNA, power amplifier and matching network
  • WEP or WPA/WPA2 authentication, or open networks
  • 16 GPIO pins
  • SPI
  • I²C (software implementation)
  • I²S interfaces with DMA (sharing pins with GPIO)
  • UART on dedicated pins, plus a transmit-only UART can be enabled on GPIO2
  • 10-bit ADC (successive approximation ADC)

All ESP8266 variants have a ESP8266EX core processor and a Tensilica L106 32-bit micro controller unit. This is a low cost, high performance, low power consumption, easy to program, wireless SoC(System-On-Chip). It provides capabilities for 2.4 GHz Wi-Fi (802.11 b/g/n, supporting WPA/WPA2), general-purpose input/output (13 GPIO), Inter-Integrated Circuit (I²C), analog-to-digital conversion (10-bit ADC), Serial Peripheral Interface (SPI), I²S interfaces with DMA (sharing pins with GPIO), UART (on dedicated pins, plus a transmit-only UART can be enabled on GPIO2), and pulse-width modulation (PWM).

It has a build-in programmer and a voltage regulator, that allow flashing and powering the device via micro-USB. The system operates at 3.3V.

Technical Details

  • Tensilica L106 32-bit micro controller unit at 80 MHz (or overclocked to 160 MHz)
  • 32 kB instruction RAM
  • 80 kB user data RAM
  • 16 kB ETS system data RAM
  • Flash Memory 4Mb
  • USB – micro USB port for power, programming and debugging
  • 13 GPIO pins
  • 802.11 b/g/n, supporting WPA/WPA2
  • STA / AP modes support
  • TCP / IP protocol stack, One socket
  • TCP / UDP Server and Client
  • Serial port baud rate configuration: 1200/2400/4800/9600/19200/38400/57600/74800/115200 bps
  • Pin-compatible with Arduino UNO, Mega
  • KEY button: modes configuration
  • 32-bit hardware timer
  • WiFi operation current: continuous transmission operation: ≈70mA (200mA MAX), deep sleep mode: <3mA
  • Serial WiFi transmission rate: 110-460800bps
  • Temperature: -40℃ ~ + 125 ℃
  • Humidity: 10%-90% non-condensing
  • Weight: about 20g (0.7oz)
  • Pulse-Width Modulation (PWM)
  • Interrupt capability
  • 3.3V operating voltage, internal voltage regulator allows 5V on power input
  • maximum current through GPIO pins: 12mA (source), 20mA (drain)
  • available firmware for Arduino IDE
  • Websocket libraries available

32-bit Tensilica Processor

The ESP8266EX microcontroller integrates a Tensilica L106 32-bit RISC processor, which achieves extra-low power consumption and reaches a maximum clock speed of 160 MHz. The Real-Time Operating System (RTOS) and Wi-Fi stack allow about 80% of the processing power to be available for user application programming and development.

Power-Saving Architecture

The ESP8266EX microcontroller integrates a Tensilica L106 Engineered for mobile devices, wearable electronics and IoT applications, ESP8266EX achieves low power consumption with a combination of several proprietary technologies. The power-saving architecture features three modes of operation: active mode, sleep mode and deep sleep mode. This allows battery-powered designs to run longer.

Small Size

ESP8266EX is integrated with a 32-bit Tensilica processor, standard digital peripheral interfaces, antenna switches, RF balun, power amplifier, low noise receive amplifier, filters and power management modules. All of them are included in one small package, our ESP8266EX.

High Durability

ESP8266EX is capable of functioning consistently in industrial environments, due to its wide operating temperature range. With highly-integrated on-chip features and minimal external discrete component count, the chip offers reliability, compactness and robustness.

Arduino Core

There are a variety of development environments that can be equipped to program the ESP8266. You can go with a simple Notepad/gcc setup, or fine-tune an Eclipse environment, use a virtual machine provided by Espressif, or come up with something of your own.

Fortunately, the amazing ESP8266 community recently took the IDE selection a step further by creating an Arduino core. If you’re just getting started programming the ESP8266, this is the environment we recommend beginning with, and the one we’ll document in our projects. This ESP8266 core for Arduino is based on the amazing work by Ivan Grokhotkov and the rest of the ESP8266 community. Check out the ESP8266 Arduino GitHub repository for more information. We provide a step-by-step instruction covering the setup of the Arduino core for the ESP8266 here.

Physical Attributes

  • Length × Width × Height(mm) : 53 × 31 × 5
  • Weight (gm) : 10

Product Video


Customer Reviews

Based on 27 reviews
Great working esp8266 chip!

Great working esp dev board! Had WLED flashed on it in less than 5 minutes from opening the package. Works perfectly!

Easy to use for WLED

Easy to install wled on these to program led lights. 2 of the 3 boards worked. The other didn't power on or be recognized by my computer.

Awesome IOT board. Will buy again.

Awesome board flashed WLED to the board and I now have an awesome wifi based led controller for my WS2012B leds

Lightweight and powerful boards

Such a good bundle to learn programming. It’s effective, light weight , power saver

punit kumar @ ankur, 9813186044.
Working Great

I have two of these outside in protected boxes and they're functioning great in all the weather. Rain, snow, bitter cold, and still humming along just fine.

sandeep thakur
Lovely piece of electronics

I love these small little things. Very easy to program with the Arduino suite.

Best Quality product

One of the Best Quality product

sachin chauhan
Is nice

Great motor its got good torque and nice rpms

Good for the money

If you are looking for this, you know they are all the same. This one is good for the price.

amit kumar
worth every penny.

Good quality product. Needed more of them and I'm repurchasing.