Now, we upload blink program using Arduino IDE to NodeMCU. We don’t need any programmer to program our board. You should see the below screen.īelow is the circuit diagram to connect LED with NodeMCU ESP-12: Step 4: Now, go to Tools -> Boards -> NodeMCU. Your installation will take some time, once completed we can proceed to our next step. Search for ESP8266 by esp8266 community and click on install as shown in the below image Step 3: Now, go to Tool -> Boards -> Board Managers. In the “Additional Board managers URL” paste the below link as shown in the image. Step 2: Go to File -> Preferences to open the below dialog box. (make sure the Arduino Version is 1.6.5 or above) Step 1: If you do not have an Arduino IDE download it and install it from here. Let us Set up the Arduino IDE for ESP8266-12 module and program it to blink a LED light. Programming the NodeMCU using Arduino IDE: If you want to learn about ESP8266 family, NodeMCU is the best choice to start with. It also has breadboard compatible headers coming out of it. The NodeMCU has all the ESP-12 pins, it also includes a micro USB connector with onboard programmer IC, voltage regulator, reset and program buttons and LEDs. The NodeMCU has the ESP-12 into a feature-filled little dev board. You can check our all ESP8266 projects here. It can also work standalone and control 1-2 devices. This little board has only 2 GPIOs, but this doesn’t mean that its performance is not up to the mark. The ESP-01 is the first Wi-Fi module of ESP8266 family. This tutorial aims to introduce you to NodeMCU ESP8266-12 module and help you get started with it. Also, we will see how to program this module using Arduino IDE and we will run a couple of test programs also. The complete specification of this module is given below in the table: Since, RXD0 and TXD0 is used to upload codes to board, we cannot use them while programming this module. I2C Pins: It has I2C functionality support but due to internal use of these pins, you have to find which pin is I2C. SPI Pins: There are 4 pins (SCK, MISO, MOSI etc) available for SPI communication as shown in green rectangle in diagram. These pins can also be used as PWM pins.ĪDC (Analog to Digital Converter) Pin: It has one ADC channel and can be accessed through pin A0. GPIO Pins: NodeMCU has 16 GPIO pins as shown in above diagram which can be used to control other peripheral devices like sensors, LEDs, switches etc. It has analog and digital pins, which we can use to interface our sensors and can get the data over internet. It is easy to work on this inexpensive SoC and make our device smart. It is ESP-12 and it is basically a System on Chip (SoC).It has Lua based firmware which is used to develop IoT based applications. This low cost, small size module could do wonders and is really simple and easy to use, provided we follow the right steps. Now, you can easily open your doors for IoT Projects with the help of this module. So, this chip enables these equipment to connect with internet and make them IoT devices. Many equipments around us cannot be connected to internet on its own. The breakout board of ESP8266-01 will have only 2 GPIO pins whereas ESP-12 has 16 GPIO Pins. However all the ESP modules have only one type of ESP processor, what differs is only the type of breakout bard used. We already covered ESP8266-01 in our previous article. The one that we are using in the tutorial is the ESP8266-12. There are many types of ESP8266 module available ranging from ESP8266-01 to ESP8266-12. This microcontroller has the ability to perform WIFI related activities hence it is widely used as a WIFI module. ESP8266 is the name of the microcontroller developed by Espressif Systems which is a company based out of shanghai. Most people call ESP8266 as a WIFI module, but it is actually a microcontroller. Then we will write a program to blink an LED with ESP8266-12. In this tutorial, we will learn about ESP-12 Wi-Fi module and how to program it using Arduino IDE.
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