V3.0 ESP8266 ESP12-E NODE MCU microcontroller

The ESP8266 NodeMCU V3 is a popular development board based on the ESP8266 Wi-Fi module. Here are some of its specifications:

- Microcontroller: ESP8266EX
- Operating voltage: 3.3V
- Digital I/O pins: 11
- Analog input pins: 1 (ADC input range: 0-3.3V)
- Flash memory: 4MB
- Wi-Fi: 802.11 b/g .../n (2.4 GHz)
- USB to serial interface: CH340G
- Reset button
- Power jack: 5V DC
- Dimensions: 49 x 24 x 13mm

The ESP8266EX microcontroller is a low-power, 32-bit MCU with integrated Wi-Fi capabilities. It can operate at clock speeds of up to 160 MHz and has 80 KB of RAM. The NodeMCU V3 board uses the Lua scripting language for programming, which makes it easy to get started with Wi-Fi and IoT applications.

The board has 11 digital input/output pins, which can be used for controlling LEDs, motors, and other peripherals. It also has one analog input pin, which can be used for reading analog sensors such as temperature and light sensors.

The 4MB flash memory on the board can be used for storing program code and data. The Wi-Fi module supports 802.11 b/g/n standards and can be used for connecting to Wi-Fi networks and creating access points.

The board can be programmed using the Arduino IDE, or with Lua scripts using the NodeMCU firmware. The USB to serial interface on the board uses the CH340G chip, which allows it to be connected to a computer for programming and debuggin