Arduino UNO Sketch for Beginners: Countdown 4-Digits LED

Material required:
- SainSmart UNO Starter Kits Tutorials
- Arduino Uno (brand Sain Smart on the exemple)
- breadboard
- 1 x 4-digit, 7-segment display module
- 8 x 220 Ohm Resistor
- Push Button
- and jumper wires

[agnonwolf]

I am a novice. If i wanted to add a simple buzzer at the end, how would i tie that in? I assumed adding a buzzer and adding "delay(30000);
digitalWrite(Buzzer, HIGH); " after " if (digitalRead(13) == LOW)
{
n = //re-start time: = 3600s seconds"

[Professzore]

Next step: SN74HC575 (also from Sainsmart), then MAX21xx.

[lovelytamila]

VV nice sr thank I want GSM, PIR, Magnetic sensor home security system and code plz do it sr