Hardware Required

• USB Cable - 1
• NodeMCU ESP8266 Cp2102 Wireless Module - 1
• Two Color Sensor Module - 1
• Bread Board 840 Point - 1
• Jumper Wire (male to female) - 40 pcs
• Single Stand Wire - 1

Introduction

In this project, we have used Two color Module to display different variants of Red and Green color using Application

HARDWARE REQUIRED

• USB Cable - 1
• NodeMCU ESP8266 Cp2102 Wireless Module - 1
• Two Color Sensor Module - 1
• Bread Board 840 Point - 1
• Jumper Wire (male to female) - 40 pcs
• Single Stand Wire - 1

SOFTWARE REQUIRED

Arduino IDE 1.8.5 (programmable platform for Arduino)

Click To Download:https://www.arduino.cc/en/Main/Software

SPECIFICATIONS

Two Color Sensor Module

The 3mm two colors LED module emits red and green light. Here, you can adjust the amount of each color using PWM. This module consists of a common cathode 3mm red/green LED and a 0Ω resistor.

NodeMCU ESP8266 Cp2102 Wireless Module

ESP8266EX offers a complete and self-contained Wi-Fi networking solution; it can be used to host the application or to offload Wi-Fi networking functions from another application processor. When ESP8266EX hosts the application, it boots up directly from an external flash. It has an integrated cache to improve the performance of the system in such applications.

• NodeMCU ESP-12E dev board can be connected to 5Vusing micro USB connector or VIN pin available on board.
• The I/O pins of ESP8266 communicate or input/output max 3.3V only. I.e. the pins are NOT 5V tolerant inputs.
• In case you have to interface with 5V I/O pins, you need to use level conversion system (either built yourself using a resistor voltage divider or using ready to use level converters.

ESP8266 NodeMcu Installation

STEP- 1 Installing Arduino Core for NodeMCU ESP-12E Using Arduino Boards Manager

As shown in the image, Copy the .json link with the latest stable release of NodeMCU package from

https://github.com/esp8266/Arduino#installing-with-boards-manager

The link should look something like this-

http://arduino.esp8266.com/stable/package_esp8266com_index.json

Step 2: Insert Link for .json NodeMCU Package Files into Arduino IDE

Paste the copied link and insert it in Arduino IDE using following sequence-

File -> Menu -> Preferences

Paste copied the link into the area shown in the black box in the above image. Close and restart the Arduino IDE.

Step 3: Tools - Boards Manager

Tools -> Boards manager and search for ESP8266 and install the libraries/files given under heading ESP8266 by ESP community.

Restart the Arduino IDE once again.

Troubleshooting:

If you get an error as shown in the image below:

Just go back to Preferences, as shown in the step-2 image.

• Here, you can see the location (Marked with red box) C:UsersREES52.COMAppDataLocalArduino15preferences.txt
• Go to this location and delete all JSON Packages from Arduino15 folder. Now, Back to Board Manager and search for ESP8266 you will surely find.

Step 4: Selecting NodeMCU Board in Arduino IDE

Go to Tools -> Boards (scroll down the list of boards) - Select NodeMCU 1.0 (ESP-12EModule).

Select the Port number at which you have connected NodeMCU. Rest of the settings can be left to default values.

CIRCUIT CONNECTION

• Connect Pin Red of Mini Two color Sensor with Pin D6 (GPIO 12) of NodeMCU.
• Connect GND of Mini Two color Sensor with GND of NodeMCU
• Connect Pin Green of Mini Two color Sensor with Pin D7 (GPIO 13) of NodeMCU.

CODE

https://drive.google.com/open?id=1bAL60jd2cuIzMSUJdgOb_6Yrd6zznYzJ

WORKING

Welcome to the NodeMCU Based Project which consists of the Two Color Sensor Module. The basic working of the circuit is being described here. This module displays two colors Red and Green and also different variants of both colors mixed. After all, connections are done appropriately, then upload the code and open the Serial monitor. Now, copy and paste the given IP on Browser of Phone/System. Now, you can access the application.