* The I/O pins of ESP8266 communicate or input/output max 3.3V only. * NodeMCU ESP-12E dev board can be connected to 5V using micro USB connector or Vin pin available on board. It should not be powered with 5 volts like other arduino boards. * The ESP8266 chip requires 3.3V power supply voltage. **Arduino logo and NodeMCU logo are their respective trademarks- logos shown in above image were taken from - and Step 1: NodeMCU ESP-12E Pin Mapping I have other video published on getting started with NodeMCU and flashing NodeMCU firmware on following link It is required only if we intend to program NodeMCU using Lua script with esplorer etc. NOTE- To use NodeMCU V1 or V2 or V3 dev boards using Arduino IDE, we do not need to flash it with firmware using nodemcu flasher. (or only ESP8266 boards, but with necessary hardware modifications and using FTDI modules for programming- not covered in this tutorial because, this is only for NodeMCU dev boards).ġ) Installing Arduino core for ESP8266 WiFi chip in Arduino IDE and Getting started with sketches written using Latest stable Arduino IDE 1.6.7Ģ) Run/modify basic LED blink sketch to blink onboard LED and/or externally connected LED at pin D0 or GPIO-16 as per the pin configuration mentioned here and here. (I think, this method can be used for other NodeMCU boards too. This is quick guide/tutorial for getting started with Arduino and ESP8266 NodeMCU V2 ESP-12Ewifi module. I struggled myself earlier in the beginning, so thought of making this Instructable for beginners. I had request about showing how to program ESP-12E NodeMCU using Arduino IDE. Especially because, the Input and output pins have different mapping on NodeMCU than those on actual ESP8266 chip. Programming, of ESP8266 using Arduino IDE is not very straight forward, until it is properly configured. Recently, there has been interest in programming ESP8266 systems using Arduino IDE. excellent few $ system on board for Internet of Things (IoT) projects. Wifi networking (can be uses as access point and/or station, host a webserver), connect to internet to fetch or upload data. 10 GPIOs D0-D10, PWM functionality, IIC and SPI communicaiton, 1-Wire and ADC A0 etc. Event-driven API for network applicaitons It combined features of WIFI accesspoint and station + microcontroller and uses simple LUA based programming language. NodeMCU Dev Board is based on widely explored esp8266 System on Chip from Expressif.
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