Here we have used Arduino and ESP8266 Wi-Fi Module to control the colors of RGB LED, through a Android Phone, over the Wi-Fi.
We mainly need an Arduino, ESP8266 Wi-Fi module and RGB (Red, Green, and Yellow) LED. ESP8266’s Vcc and GND pins are directly connected to 3.3V and GND of Arduino and CH_PD is also connected with 3.3V. Tx and Rx pins of ESP8266 are directly connected to pin 2 and 3 of Arduino. Software Serial Library is used to allow serial communication on pin 2 and 3 of Arduino. We have already covered the Interfacing of ESP8266 Wi-Fi module to Arduino in detail.
Here we have used a Common Anode RGB LED. This RGB LED pins namely R, G, B and anode are connected at 11, 10, 9 and +5 volt Vcc. Common Anode pin has a 1K resistor with +5 volt for protecting the LED to be damaged.
Working of the RGB LED is simple, we have created three Sliders, using Blynk app, for controlling the intensity of three colors of RGB LED that is RED, GREEN and BLUE. And one button for flashing the RGB LED in different pattern.
Required Components:
- Arduino UNO
- ESP8266 Wi-Fi Module
- USB Cable
- Connecting wires
- RGB LED
- Android Mobile phone
- Blynk App
Software Specifications
- MC Programming Language: C
