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NodeMcu V3 Lua CP2102 ESP8266 Development Board

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LKMIC00006

NodeMCU is an open-source Lua based firmware and development board specially targeted for IoT based Applications. It includes firmware that runs on the ESP8266 Wi-Fi SoC from Espressif Systems, and hardware which is based on the ESP-12 module.

 

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NodeMcu V3 Lua ESP8266 CP2102 Specifications & Features

The NodeMCU Development Board is a versatile and easy-to-use platform for IoT projects. It features an ESP8266 Wi-Fi module, 4MB flash memory, and a USB-to-serial converter for programming and debugging. With its compact size and low power consumption, it is ideal for building connected devices and applications.

  • Microcontroller: Tensilica 32-bit RISC CPU Xtensa LX106
  • Operating Voltage: 3.3V
  • Input Voltage: 7-12V
  • Digital I/O Pins (DIO): 16
  • Analog Input Pins (ADC): 1
  • UARTs: 1
  • SPIs: 1
  • I2Cs: 1
  • Flash Memory: 4 MB
  • SRAM: 64 KB
  • Clock Speed: 80 MHz
  • USB-TTL
  • PCB Antenna
  • Small Sized module to fit smartly inside your IoT projects

NodeMCU Development Board Pinout Configuration

Pin Category Name Description
Power Micro-USB, 3.3V, GND, Vin Micro-USB: NodeMCU can be powered through the USB port

 

3.3V: Regulated 3.3V can be supplied to this pin to power the board

 

GND: Ground pins

 

Vin: External Power Supply

Control Pins EN, RST The pin and the button resets the microcontroller
Analog Pin A0 Used to measure analog voltage in the range of 0-3.3V
GPIO Pins GPIO1 to GPIO16 NodeMCU has 16 general purpose input-output pins on its board
SPI Pins SD1, CMD, SD0, CLK NodeMCU has four pins available for SPI communication.
UART Pins TXD0, RXD0, TXD2, RXD2 NodeMCU has two UART interfaces, UART0 (RXD0 & TXD0) and UART1 (RXD1 & TXD1). UART1 is used to upload the firmware/program.
I2C Pins NodeMCU has I2C functionality support but due to the internal functionality of these pins, you have to find which pin is I2C.

 

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