Introduction: Automatic Day Alarm

This is an automatic day alarm. when sunlight falls on the LDR the alarm will turn on. it is super easy to make.


1. 12-volt dc adapter

2. LDR light-dependent resistor


Step 1: Step:1 Connecting the Ldr

connect the positive end of the buzzer to the LDR and another end of LDR to the positive wire of the 12 VDC adapter. And the negative wire of the adapter to the negative wire of the buzzer

Step 2: Step:2 Insulating

insulate the open wire connection through an insulating tape

Step 3: Step:3 ENJOY!!

connect the adaptor ino the wall socket and enjoy