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Audio Amplifier with LM 386 OP Amp

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 https://photos.app.goo.gl/KgdJ8b49mJVHmrJQA https://photos.app.goo.gl/UJByBRcJEi3ruFDD9

DC Short Circuit Protection with MOSFET

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 https://photos.app.goo.gl/38PfwM1F6AACsLDr5 https://photos.app.goo.gl/hJ6wfhqggzCeq7nX6 https://photos.app.goo.gl/q3h5qTTxuNWJRxWN6 https://photos.app.goo.gl/fb8B2XzUDCjMYwWY9

Variable power supply + mobile charger

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Interfacing LCD Screen with Arduino

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  Arduino Sketch # include < LiquidCrystal.h > int rs= 9 ; int en= 8 ; int d4= 7 ; int d5= 6 ; int d6= 5 ; int d7= 4 ; LiquidCrystal lcd ( 9 , 8 , 7 , 6 , 5 , 4 ); // Change following variables as per your need char * LargeText = "* WELCOME TO ANOKH AUTOMATION * " ; int iLineNumber = 0 ; // Line number to show your string (Either 0 or 1) int iCursor = 1 ; void setup () { lcd. begin ( 16 , 2 ); } void loop () { lcd. setCursor ( 0 , 1 ); lcd. print ( " +971557407961 " ); UpdateLCDDisplay (); // Scoll text by 1 character delay ( 500 ); // Change delay to change speed for scrollig text. } void UpdateLCDDisplay () { int iLenOfLargeText = strlen (LargeText); // Calculate lenght of stri...

Flame Detector Alarm System with Photo Diode and Arduino

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  //Arduino Sketch #define Photodiode A0// connect Photo diode to A0 Pin of Arduino as per the circuit #define RED_LED 5// connect Red LED to Digital Pin 5 of Arduino as per the circuit #define GREEN_LED 6//connect Green LED to Digital Pin 6 of Arduino as per the circuit #define Buzzer 7//connect Buzzer to Digital Pin 7 of Arduino as per the circuit #define Relay 8//connect Relay  to Digital Pin 8 of Arduino as per the circuit int x, i; void setup() {   pinMode(RED_LED, OUTPUT);   pinMode(GREEN_LED, OUTPUT);   pinMode(Buzzer, OUTPUT);   pinMode(Relay, OUTPUT);   Serial.begin(9600); } void loop() {   x = analogRead(Photodiode);   if (x > 10)// decrease the value of "x" to trigger alarm in a Low flame.   {   Serial.println(" Fire Detected!!!");   digitalWrite(GREEN_LED, LOW);   digitalWrite(Relay, HIGH);   for (i = 0; i < 10; i++)   {     digitalWrite(RED_LED, HIGH);     tone(Buzzer, 1000)...

Non contact AC voltage tester

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Simple Audio Level Indicator

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