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Bluetooth Controlled Light Using Arduino with Single Relay

Bluetooth Controlled Light Using Arduino with Single Relay

AC light can be controlled via HC-05 Bluetooth module using Arduino Uno and single-channel relay.

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  • 1 respect

Components and supplies

Apps and online services

About this project

Why to use relay for controlling AC light?

AC is alternating current 220v (india) which powers the ac lights. Arduino cannot control high volt n amp, but a relay can do this job, which is the sole design of it. so we are using relay as switch to control high power devices.

What is NO NC and COM in relay?

C = Common Connection

NC = Normally Closed Connection

NO = Normally Open Connection

I have explained NO NC COM elaborately in step 3, refer it -if you feel it bit confusing.

I'm going to use NO (Normally Open Connection).

Code

F8QPPEZHTVICTWO.inoArduino
                       

#define RELAY1  7                        
void setup()

{    


Serial.begin(9600);
  pinMode(RELAY1, OUTPUT);       

}

  void loop()

{

   digitalWrite(RELAY1,0);           // Turns ON Relays 1
   Serial.println("Light ON");
   delay(2000);                                      // Wait 2 seconds

   digitalWrite(RELAY1,1);          // Turns Relay Off
   Serial.println("Light OFF");
   delay(2000);
   
}

Custom parts and enclosures

xiaoying_video_1547794915684_TUrNhz8891.mp4
xiaoying_video_1547794915684_TUrNhz8891.mp4
Bluetooth app
bt_power_socket_v1_1_HK1gaSxq8l.apk

Schematics

fxod7oohtvicrin_small_0pkSk5oVzu.jpg
Fxod7oohtvicrin small 0pksk5ovzu

Comments

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