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.
Supplies
1. 12-volt dc adapter
2. LDR light-dependent resistor
3.buzzer
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 Insulating
insulate the open wire connection through an insulating tape
Step:3 ENJOY!!
connect the adaptor ino the wall socket and enjoy