Home Alarm System

Arduino based alarm system

Hardware used

• Arduino MKR1000, used as the alarm server / base station.
• Arduino Nano 33 IOT used for door sensors
• 2 color OLED Display used for base station display(any i2c oled display will work)
• NTE Magnetic Alarm Reed used for door sensor(any reed alarm switch will work)
• Adafruit I2S 3W Class D Amplifier Breakout
• A Speaker. Check the amp specifications and get a speaker to match that.
• LEDs
• 10k resistor used for the Alarm Reed Ground
• 1k resisor, used for all LEDs

Required Software Libraries

All of these can be installed via the Arduino IDE.

• SPI
• Adafruit_ZeroI2S - For the AMP breakout
• WiFi101
• WiFiNINA
• Wire
• Adafruit GFX
• Adafruit SSD1306

Pin Configurations

MKR1000

LED

• Pin 5
• 1k resistor to ground

OLED Dislay

• VCC to 5v
• GND to GND
• SCL to SCL
• SDA to SDA

i2s Amplifier

• VIN to 5v
• GND to GND
• LRCLK to PIN 3
• BCLK to PIN 2
• DIN to A6

NANO 33 IOT

LED

• PIN D13
• 1k resistor to GND

MAgnetic Reed Switch

• Pin ~D2
• 10k resistor to ground