Technical Guide

 _____________________________________________ Systematic code link:_ https://drive.google.com/file/d/1VwPzmhvYBqmUebydrFQrcfeUPqpu3OMe/view?usp=drivesdk

 Components required to make this project_ Arduino Uno,nano A buzzer or speaker 4ohm A push button 3 5mm Leds A 10k ohm resistor For leds safety you can use 3 220ohm resistor to each led of positive leg __________________________________________________________________________________________ Copy and paste the code to arduino ide or arduinodroid_ Code are given below _ _____________________________________________ //constant will be not change const int speakerPin = 2; const int led1 = 5; const int led2 = 6; const int led3 = 7; const int button = 12; int buttonState = 0; int length = 28; // the number of notes char notes[] = "GGAGcB GGAGdc GGxecBA yyecdc"; int beats[] = { 2, 2, 8, 8, 8, 16, 1, 2, 2, 8, 8,8, 16, 1, 2,2,8,8,8,8,16, 1,2,2,8,8,8,16 }; int tempo = 150; void playTone(int tone, int duration) {     for (long i = 0; i < duration * 1000L; i += tone * 2)         {               digitalWrite(speaker...

Connection PIN to arduino uno Led outputs pin 2 to 12 pin  Ir receiver out pin:11 Connect all negative leds to ground Connect Ir receiver ground to ground and vcc to 5 volt    

For ultrasonic sensor Connection pin_ Echo-2 Trigger-3 Vcc-5v Gnd-Gnd ______________________________________________ All negative leg of led to Gnd of arduino And positive leg of leds are pin number 4 to 11 of arduino respectively  

Hardware set-up: Connection pin trigger: D0     Echo:  D2                   Vcc: Vin or 3 v       Gnd:Gnd Systematic diagram_ _____________________________________________ Application set-up:_ Download blynk application from play store or app Store Sign up in the application by providing email and password After login _ Follow these steps to setup this project:_ Create new project in blynk        Name the project, select proper board (nodemcu), connection type Wi-Fi Click on ok button                          Click on (+)add icon to add widget Scroll down to select led widget  Name the led(empty), seclect virtual pin v0 choose the specific colour as you want,and go back Similarly as above name the led (low), select virtual pin v1,and choose colour and go back.                  ...