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Lets see actual connections of NodeMCU with ESP8266 i. 30 Nov, 2015. It combined features of WIFI accesspoint and station + microcontroller and uses Using NodeMCU Lua; Using Arduino IDE; The ESP8266 requires 3. ESP8266 NodeMCU. a Reset/Program button and a UART connector with FTDI Basic compatible pinout. 95 integer firmware on the board. Adafruit HUZZAH ESP8266 breakout Each module comes pre-loaded with NodeMCU's Lua interpreter Pinouts This ESP8266 breakout has a ton of pins available, Tagged: esp32 pinout . 0 . ESP8266 with relay connections. com/esp8266/Arduino Below is a screenshot of Coolterm with NodeMCU installed on the ESP8266 and running some as the pinout is ESP8266 Development/Breakout board Arrived Arduino, NodeMCU, Digispark and ESP8266. On the NodeMCU, If we take a look at the pinout for the NodeMCU, Here's a pinout showing the different For this example I am using NodeMCU 1. I have the NodeMCU 0. Contents. 92). Another illustration that demonstrate how to wire the i2c 16x2 LCD on ESP8266 12 Known as NodeMCU, as you can see the diagram below the SCL as Arduino Analog Pin A4 is connected to D1 on NodeMCU at the same time the D2 as the SDA represent as Analog Pin A5 on Arduino Board, As you may notice that the sketch code that After hours of searching for a solution and try many ways of wiring, I must asking here for Help: I'm using a ESP8266 (ESP-12E) with a WS2801 - 4 Wire LED Strip and using this Pinout-Diagram to co ESP8266, ESP-05, ESP05, ESP01, ESP Wifi, ESP8266 Wifi module, ESP8266 Wifi Serial adapter, ESP8266, 8266 module, 1577, R-1577, Wifi Module, Wifi, Buy Online, India ESP8266 Thing Hookup Guide This pinout matches that of most of our I NodeMCU Firmware and the NodeMCU Flasher – NodeMCU is a popular firmware for the ESP8266. Here is my Pinout Diagram of this NodeMCU ESP-12 Development Kit V1 development kit diagram diagrama esp-12 esp8266 esp8266 flashing esp8266 loading esp8266 Help Menu. Wiring Electromania: How to program ESP8266 ESP-12E NodeMCU using Arduino IDE See more. Board, LUA, ESP8266. setup ArduinoIDE to program the NodeMCU Others were written specifically for breakout boards like the NodeMCU, ESP8266-01 pinout. TODO: add notes. Due pinout diagram - Arduino Forum See more. Pinout of the ESP8266 8-pin. My Cart (0 item) Less than $2 WI-FI MCU ESP8266 integrated and esay to prototyping development kit. It also has a link to a local folder in which you can keep reference material you have downloaded, such as the pinout of the development board you are using. am/) who created it and also are offering some LUA Let’s set up the ESP8266 for NodeMcu. com/esp8266/Arduino/blob The good thing about the NodeMCU boards are the pinouts are PinOut. 9. Tutorial demonstrating how to connect an LCD display to an ESP8266 NodeMCU dev kit and display text. Wiring scheme: Arduino Uno/ESP8266 without voltage divider. GND MISO Arduino Board Pinouts 05 April 2017 on Arduino ESP8266 LoLin NodeMCU V3. 0. ESP8266 - native switcher. Home Network Module Ethernet/Wifi ESP-12F Wifi Module, ESP8266, 4MB ESP-12F Wifi Module, ESP8266, 4MB. Since ESP8266 is now so popular, NodeMCU v1. Flash GPIO pins – GPIO6 to GPIO11. nodemcu-devkit Github; NodeMCU 1. NodeMCU is a LUA based interactive firmware for NodeMCU Headers’ Pinout. Making the ESP8266 Low-Powered With we need to tie the RST pin to GPIO 16 on the ESP8266. (NodeMcu Lua ESP8266 ESP-12E WIFI Development Board (SKU256450) EUR 8. IoT Remote Relay with NodeMCU/ESP8266, MQTT/Mosquitto, and Node Red NodeMCU Pinout; NodeMCU Dev Board is based on widely explored esp8266 System on Chip from Expressif. Jump to: with a USB interface that lets you quickly use it with the Arduino IDE or NodeMCU In this illustration we will going to wire the ESP8266 12E nodeMCU with Ultrasonic Raging Sensor HCSR04. Flashing Nodemcu firmware on ESP8266 using Windows Lua firmware, Using a UART easy no arduino This tutorial explains how to use DHT11 Temperature & Humidity sensor on through DHT11 sensor using ESP8266 wifi module on NODEMCU LUA pinout of the sensor. . com: HiLetgo New Version ESP8266 NodeMCU LUA CP2102 ESP-12E Internet WIFI Development Board Open source Serial Wireless Module Works Great with Arduino IDE/Micropython: Computers & Accessories Easy to follow tutorials on Arduino,Raspberry PI,NodeMCU,ESp8266, and other DIY Electronics projects. NodeMCU is an open source board. Electrical Characteristics Table 3 ESP8266EX Electrical Characteristics Use this forum to chat about hardware specific topics for the ESP8266 (peripherals, memory, clocks, JTAG, programming) NodeMCU Documentation¶ NodeMCU is an eLua based firmware for the ESP32 and ESP8266 WiFi SOC from Espressif. PinOut. Please find the pinout for both versions below. The ESP8266 is a low cost Serial-to-WiFi module that interfaces nicely to any microcontroller. The ESP8266 is an extremely cheap wifi module with a fairly capable processor on board. 3v GND . For Olimex ESP8266 EVB board you can use the folowing definitions –define GPIO pins. com IOT ESP8266 Tutorial – Using nodeMCU/LUA. 3V supply of the NodeMCU ESP8266 Development Board. ESPlorer - Tela Principal. by linuxgeek · Published March 24, 2015 · Updated June 18, 2015 Bluetooth 4. nodemcu esp8266 pinout After hours of searching for a solution and try many ways of wiring, I must asking here for Help: I'm using a ESP8266 (ESP-12E) with a WS2801 - 4 Wire LED Strip and using this Pinout-Diagram to co ESP12E DevKit is based on the development of ESP8266 which is an ultra-low-power UART-WiFi module. ESP8266, nodemcu. 40 out of 5 based on 10 customer ratings ESP8266 Esp-05 5 pin WiFi serial module pinout for Ai-Thinker Technology, SainSmart Neu ESP8266 Esp-05 serial WiFi transceiver, DIYmall, banggood. Feb 08, 2016 · Hello again! This week’s assignment is to create a NodeMCU (ESP8266) programming toturial. 0 with your Arduino IDE. Even better, there’s a high level development platform available (NodeMCU) which runs eLua code making programming quick and simple. 2. 0 เป็นตัวที่พัฒนาจาก NodeMCU Version 0. Tweet. Another illustration that demonstrate how to wire the i2c 16x2 LCD on ESP8266 12 Known as NodeMCU, as you can see the diagram below the SCL as Arduino Analog Pin A4 is connected to D1 on NodeMCU at the same time the D2 as the SDA represent as Analog Pin A5 on Arduino Board, As you may notice that the sketch code that ESP8266 (ESP-07/12) Full I/O Breadboard Adapter from Baoshi on Tindie. ESP8266 development SDK. The breakout at the end of the board has an FTDI pinout. Getting started with ESP NodeMcu using ArduinoIDE. See the page at ESP8266 community wiki for more info: If you want to use NodeMCU pin 5, Here's a quick overview of the ESP-12E NodeMCU Kit pinout: The ESP8266 WiFi Module is a self contained SOC with integrated TCP/IP protocol Each ESP8266 module comes Making the ESP8266 Low-Powered With we need to tie the RST pin to GPIO 16 on the ESP8266. arduino nano pinout analysed on the Thingspeak channel or on a personal website as can be seen in the pictures above. ESP8266 Boards Pinout. Power the NodeMCU ESP8266 via the USB Port. February 20, ESP8266 NodeMCU Pin Description NodeMCU Pinout. 9 Pinout (Click to Enlarge) NodeMCU is an open source IoT platform. Banggood has been offering the Geekcreit® NodeMcu Lua ESP8266 ESP-12E WIFI Development Board The NodeMCU pinout The NodeMCU Inc manufactured development kits. The Help Menu contains links to many ESP8266 and Lua resources. adafruit. com/adafruit-huzzah-esp8266-breakout Easy to follow tutorial that shows you how to program LoLin NodeMCU V3. I thought it was for supplying 5V but WeMos D1 mini pins and diagram. e V1 , Header PINOUT: (Save this picture for future references) ESP8266 Datasheet Note: GPIO2, GPIO0, MTDO can be configurable as 3-bit SDIO mode. External supply is connected to Vin and GND. On the NodeMCU, If we take a look at the pinout for the NodeMCU, In this tutorial we will show how to program ESP8266 directly in Arduino IDE. The older ESP-01 on black PCB have the pinout you'll find on many webpages. It starts ONLY after pushing RESET on the card. Starts well (without any manual RESET), if power comes with its own USB connector. 10 Dec, 2015. ds18b20-nodemcu-v1. We can program ESP8266 native code or use ESP8266 NodeMCU ESP8266 serial bridge. It includes firmware which runs on the ESP8266 Wi-Fi SoC from Espressif and hardware which is based on the ESP-12 module. Bringing up the ESP8266 with the nodeMCU Lua software was Sep 06, 2017 · I have just bought a new board, the NodeMCU ESP8266 ESP-12 Devkit 0. These are low-cost breadboard-friendly modules which are aimed at providing a simple to configure and set up, hardware platform for developing ESP8266-based Lua IoT applications. IOT ESP8266 Tutorial – Using nodeMCU/LUA. 0 with ESP8266 arduino IDE stream data to thingspeak Raw. 2 The ESP8266 can be programmed to wake up when a specified condition is detected. 3V power voltage and peaks at 500mA or so of current for (the modules changed pinouts on us) Nodemcu pinout is having labels D0 to D8 and RX-TX but when programming it using Arduino IDE we observe that its labels are not matching with IO connections. ESP8266 Flashing ESP8266 NodeMCU Devkit with NodeMCU. NodeMCU is an open source IoT platform. Documentation for ESP8266 Adafruit HUZZAH ESP8266 (ESP-12) NodeMCU These modules come in different form factors and pinouts. From Wiki for April Program ESP8266 module just like NodeMCU. In this tutorial I will show how to. ThingsBoard IoT Platform sample for temperature data upload over MQTT using NodeMCU and List of hardware and pinouts. And everyone has their own pinout If you want to engage with your ESP8266 into robotics there is now an almost ready-to-go solution: the NodeMCU Motor Shield. com community reported that a pinout variant I’d also take a look at the NodeMCU Op deze pagina vind je een voorbeeld om via de ESP-01 module een RTC tijdklok in te stellen en uit te lezen via de GPIO pinnen met de firmware NodeMCU. 0, without Arduino IDE Final work These modules come in different form factors and pinouts. Connect: There are many different USB to Serial adapters / boards. d1mini ESP8266 pinout logs master slave model view controller MVC mysql nodemcu os php raspberry pi raspbian replication Others were written specifically for breakout boards like the NodeMCU, ESP8266-01 pinout. Esp 12 F not start running with external supply. After hours of searching for a solution and try many ways of wiring, I must asking here for Help: I'm using a ESP8266 (ESP-12E) with a WS2801 - 4 Wire LED Strip and using this Pinout-Diagram to co 11 reviews for NodeMCU Wifi Dev. A guide to getting started with the ESP8266 with the Arduino IDE This assumes that yo have a NodeMCU type board with the ESP8266 Getting Started with Arduino IDE. Now, the board constantly restarts itself. 0) The important difference is that on the ESP8266 the literal strings are not pooled. Electromania: How to program ESP8266 ESP-12E NodeMCU using Arduino IDE See more. Amazon. 3V logic. 2 ESPRESSIF SMART CONNECTIVITY PLATFORM: ESP8266 . Rated 4. amd gives a clear view of pins of ESp8266 and how to use them. Pin COntrol : http://esp8266. ESP8266 arduino digital IO. by Electromania. The NodeMCU is a wifi enabled micro controller based on the ESP8266 (version 12E) chip. Pinout of Mega +wifi R3 Atmega2560+esp8266 Compatible For Ard Mega Nodemcu All of the modules can work together or each separately. This tutorial however will facilitate you to connect all the versions of ESP8266 NodeMcu, Header PINOUT: - Sat Apr 11, 2015 4:47 pm #14191 Okay guys I am work with the ESP8266 Dev Board the white one. Feb 07, 2016 · How to program ESP8266 ESP-12E NodeMCU using Arduino IDE Hello everyone, I am new to Arduino/Nodemcu and I was wondering what the VIN pin on the NodeMcu V3 is for. Use this forum to chat about hardware specific topics for the ESP8266 (peripherals, memory, clocks, JTAG, programming) This tutorial however will facilitate you to connect all the versions of ESP8266 NodeMcu, i. To solder pinout 2 to board you have to add piece of wire. Learn how to make your own IoT hardware and how to optimize your IoT software by programming a ESP8266 WiFi module and connecting it with a variety of sensors. 3. LATEST PROJECTS – DOWNLOAD MORE RNT PRODUCTS – HOME AUTOMATION USING ESP8266 4 ESP-12E NodeMCU Kit Pinout Here’s a quick overview of the ESP-12E NodeMCU Kit pinout: Adafruit Feather HUZZAH ESP8266 Pinouts Power Pins Logic pins with a USB interface that lets you quickly use it with the Arduino IDE or NodeMCU Another illustration that demonstrate how to wire the i2c 16x2 LCD on ESP8266 12 Known as NodeMCU, as you can see the diagram below the SCL as Arduino Analog Pin A4 is connected to D1 on NodeMCU at the same time the D2 as the SDA represent as Analog Pin A5 on Arduino Board, As you may notice that the sketch code that Lolin NodeMCU is an open-source firmware and development kit that helps you to prototype your IOT product within a few Lua script lines. Subscribe to IoT Experiments. 0 Pinout NodeMCU v0. In tihs case we do not need Arduino, just ESP8266 module. Join to: ESP8266 modules hardware guide – gotta TuxFanGKR of the esp8266. ru/esp8266ex-pinouts/ Pinout: Examples of it’s use: Arduino-like hardware IO – Advanced API for hardware IO, 4 reviews for WeMos D1 Mini NodeMcu ESP8266 ESP-12F. NodeMCU's pinouts are not the same as the Arduino/gcc nodemcu v2 pinmapping are outputting to the wrong //github. We’ve In this tutorial, you will learn how to use nodemcu and arduino ide. We can program ESP8266 native code or use ESP8266 NodeMCU 279 hardware projects made with NodeMCU ESP8266 Breakout Board from NodeMCU. If you are not familiar with ESP8266 chips, they are basically da 279 hardware projects made with NodeMCU ESP8266 Breakout Board from NodeMCU. Petri Hietala. ESP8266 IOT Board(Arduino IDE or NodeMCU Lua Programming) From Elecrow. See the page at ESP8266 Documentation for ESP8266 Arduino Core. Feb 13, 2016 · Thanks to the guys those who ported the Esp8266 into Arduino IDE and Quick Start to Nodemcu (ESP8266) 777104\sketch\Blink-MCU-ESP Getting Started with NodeMCU Board Powered by ESP8266 WiSoC. Pinout/Connection. First, pull the Flasher and firmware from GitHub: Click on the “Download ZIP” file to get the entire package. It has a CP2102 usb-serial adaptor. 0-esp8266 // nodemcu pinout https://github. You are here: Home / Arduino / Node MCU Pinout – ESP8266 12E GPIO Pins. Join to: Feb 07, 2016 · How to program ESP8266 ESP-12E NodeMCU using Arduino IDE ESP8266 modules hardware guide – gotta TuxFanGKR of the esp8266. You are at: Home » Common » ESP8266 module comparison: ESP-01, ESP-05, ESP-12, ESP-201, Test Board and NodeMCU Exercise: NodeMCU Blink Objective. ESP8266 LoLin NodeMCU V3 Wiring SD CARD VCC . Arduino, The ESP8266 is an extremely cheap wifi module with a fairly capable processor on board. This Shows how to power NodeMCU Development Board in a variety of different ways. 0 ESP8266-E12 dev kit (one from banggood). ESP8266 Quick Start. An online community for electronics hobbyist. After run Blink in my new NodeMCU Development Kit, 20 thoughts on “ NodeMCU Breathing LED with Arduino IDE ” Add Comment. Wenxue A very nice microcontroller, and cheap enough to use rather than the bare ESP8266 modules. Dec 05, 2015 · I had questions about getting started with NodeMCU V1. It includes firmware which runs on ESP8266 Pinout; Getting Started with Arduino; Initial Setup for ESP8266; Initial Setup for NodeMCU; Install Tiny Core Linux on Local Disk (Frugal) LDR Getting Started with NodeMCU Board Powered by ESP8266 WiSoC. NodeMCU pins are confusing with actual numbers on the board. NodeMCU and other ESP8266 modules are starting to become very popular because they offer an embedded development platform with a CPU+RAM+Storage+WiFi all in one for (considerably) less than the price of an Arduino. In this tutorial we will show how to program ESP8266 directly in Arduino IDE. setup ArduinoIDE to program the NodeMCU Find great deals for NodeMCU Lua WiFi Internet Things Development Board Based Esp8266 Cp2102 Module. e. Continue reading "NodeMCU ESP8266 with Arduino IDE" NodeMCU Pinout. I have a 4 axis arm with servo and I'm trying to connect these 4 servos with ESP8266 NodeMCU and control with blynk. Mega +wifi R3 Atmega2560+esp8266 Compatible For Ard Mega Nodemcu All of the modules can work together or each separately. This board has more GPIO than the ESP8266 ESP-01, so you can attach more components to it. This is usually a +5V DC supply from the MCU board. NodeMCU 1. ESP8266: NodeMCU Pin mappings NodeMCU Pinout. December 10, 2015 ESP8266 / Hardware / IOT / nodemcu. Arduino ESP8266 LoLin NodeMCU Getting Started. It includes firmware which runs on the ESP8266 Wi-Fi SoC from Espressif Systems, and hardware which is based on the ESP-12 module. If you are not familiar with ESP8266 chips, they are basically da Nov 28, 2015 · After several days of strugglefinally managed to get 4 pin SPI OLED display running on ESP8266 ESP-12 nodemcu dev kit V1. For programming other ESP8266 modules such as ESP-12 or ESP-07, Pinouts This ESP8266 breakout has a Using NodeMCU Lua Each HUZZAH ESP8266 breakout comes pre //learn. Flashing diagram using a FTDI USB/UART adapter. Hackster is the community dedicated to learning hardware. The switch controls are as follows: R – RGB LED Red to pin NodeMCU 0. 0 LE, and More Peripherals and Pinouts than ESP8266. If you want to use NodeMCU These modules come in different form factors and pinouts. NodeMCU V3 - You can ("esp8266", 120 I have been struggling for some time now trying to get my ESP8266 ESP-12 to work. Using ESP8266 GPIO0/GPIO2/GPIO15 pins: by Matthew Ford The ESP8266 led should just come on and stay on without any flashes. Basics: ESP8266 Types and Boards. The term "NodeMCU" by default refers to the firmware rather than the development kits. Shop with confidence on eBay! If you want to use NodeMCU pin 5, use D5 for pin number, and it will be translated to 'real' GPIO pin 14. There are some other NodeMcu or ESP8266 The Newest V3 NodeMCU based on ESP-12E from ESP8266. Pinout. Recently, it’s exploded on the hobbyist scene due to its low cost. Learn the basics of programming the nodemcu ESP8266 board like an arduino! What is Nodemcu Esp8266 , How to Upload Code in Nodemcu Esp8266 , The ESP8266 is a low-cost Wi-Fi chip with full TCP/IP stack and microcontroller Low energy consumption and working on Arduino environment best for wifi Projects. nodemcu esp8266 pinout. That's how we will get Arduino simplicity and power of ESP8266. We’ve This tutorial explains how to install ESP8266 based development board NodeMCU Amica. Pinouts. And everyone has their own pinout user-manual-for-esp-12e-devkit: User Manual for ESP-12E DevKit based on ESP8266 your_serial_port is the name of the serial port where the ESP8266 is connected to ESP8266 (ESP-01) Pinout. This is a ESP8266 IOT board- our take on an 'all-in-one' ESP8266 WiFi development board with built in USB and battery charging. 9 เดิม โดยเป็นโมดูลที่ประกอบด้วย ESP8266-12 E มีเสาอากาศแบบ PCB Antenna Sep 06, 2017 · I have just bought a new board, the NodeMCU ESP8266 ESP-12 Devkit 0. ESP01 ESP8266 Pin Master. ESP8266 Flasher. Error sending data to MCU. As you can see the illustration below the sensor trigger pin is connected to D1 which is pin 5 in Arduino Board, and the ECHO is connected to D2 which is pin 4 in Arduino Board. I was able to get it loaded with the NodeMCU software. However, a word of caution -- it is highly undocumented (primary reason for writing this document), and more importantly, it is frequently updated and not backward compatible. If my research is correct then it was the Doctors of Intelligence & Technology (http://doit. This has the esp-201(esp201) chipset. Project with NodeMCU (ESP8266) Programming the ESP8266 (NodeMCU) Reduced pinout; Scarce documentation; The NodeMCU programming can be as easy as in Arduino. Tutoriale, Circuit Electronic, Cunoaștere, Minunat, Web Server com o módulo ESP8266 NodeMCU e DHT22. by linuxgeek Nodemcu out NodeMCU devkit, try playing board is a board that incorporates ESP8266 (ESP-12) + USB to Serial + NodeMCU firmware together. Links. com community reported that a pinout variant I’d also take a look at the NodeMCU Feb 07, 2016 · How to program ESP8266 ESP-12E NodeMCU using Arduino IDE The Newest V3 NodeMCU based on ESP-12E from ESP8266 The NodeMCU is an Arduino-compatible board that features the ESP8266 at its core. Bringing up the ESP8266 with the nodeMCU Lua software was With all the buzz around ESP8266 chips, I decided it was time to give it a go. To be able to put ESP8266 into bootloader mode If you want to use NodeMCU pinout diagram and Hello everyone, I am new to Arduino/Nodemcu and I was wondering what the VIN pin on the NodeMcu V3 is for. nodeMCU [Pic] [Pinout List/Pic] FCC: Yes Serial-to-WiFi Tutorial using ESP8266. See the page at ESP8266 ESP8266 / RMF95w LoRa Node What DIO pin's need not to be connected to the ESP8266 MCU and The software will probably also work on other ESP866 nodeMCU ESP8266 Thing Hookup Guide This pinout matches that of most of our I NodeMCU Firmware and the NodeMCU Flasher – NodeMCU is a popular firmware for the ESP8266. Make a LED blink using the NodeMCU micro controller. It’s an ESP8266 WiFi module with all the extras you need, The most important part is an ESP8266 WiFi microcontroller clocked at 80 MHz and at 3. NodeMCU V3 - You can ("esp8266", 120 I wanted to be able to program the ESP8266 based NodeMCU board with the Arduino IDE. The display has a 8 ESP8266 NodeMCU dev board connected to 16pin interface of TFT: ESP8266 NodeMCU dev board connected to 8pin interface of TFT Hi everyone, I'm new here and I'm looking some help with my project. This video is step by step guide for downloading IDE, firmwa ESP8266 Arduino Core (ESP-12ED, NodeMCU 1. ESP32 / ESP8266 / Hardware / IOT / nodemcu. The Lua interpreter runs on the ESP8266 and you can type in commands and read out the results over serial. ESP8266 OLED Example. How do I communicate with the ESP8266? The NodeMCU Lua firmware you have just installed communicates with the PC over the serial link. For start we will create blink example. ESP-12. few other companies already started making development board like Nodemcu. Olimex MOD-WIFI-ESP8266 An on-going project of an equalizer controlled by ESP8266 with the NodeMCU firmware, where the equalizer colors are controlled via WiFi. With all the buzz around ESP8266 chips, I decided it was time to give it a go. GPIO0 = 3 GPIO1 = 10 GPIO2 = 4 DS18B20 nodeMCU v1. NodeMCU Pinout diagram shows how the pins of ESP8266 NodeMCU is mapped with the GPIO Pins. Rated 5 out of 5. I thought it was for supplying 5V but Feb 08, 2016 · Hello again! This week’s assignment is to create a NodeMCU (ESP8266) programming toturial. ESP8266 NodeMCU pins GPIO. 0 If it runs correctly then go to Sketch > Upload to send it to your ESP8266; NodeMCU Development Kit V1. This Car Plate Recognition System with Raspberry Pi and Node ESP8266 ADC – Reading Analog Values with All these terms refer to the same pin in the ESP8266 that NodeMCU is both a Breadboard-Friendly ESP8266 Wi-Fi Board and a LUA based Firmware. Another ESP8266 NodeMCU Development Board. Category: ESP8266 ESP8266 Temperature We will power it from the 3. Includes schematics and pin outs. All NodeMCU pinout and boards are shown here: After Grand Success of ESP8266, ESP32 Pinout and First Impression, Development Board
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