we will discuss about Home Security Alarm Using PIR Motion Sensor & Arduino for Night time only.
A night security light only turns on when it’s dark and when movement is detected. The lamp & the buzzer turns on when it’s dark & movement is detected. When there’s light, the lamp is turned off, even when motion is detected.
The circuit is infact a dark activated switch that measures the ambient light level and will enable the system only when ambient light level is below a threshold value. Here an LDR (Light Dependent Resistor) is used to measure the light level. The alarm system is triggered when a “Logic High (H)” level signal is detected at its sensor input port.
we will discuss about Home Security Alarm Using PIR Motion Sensor & Arduino for Night time only.
A night security light only turns on when it’s dark and when movement is detected. The lamp & the buzzer turns on when it’s dark & movement is detected. When there’s light, the lamp is turned off, even when motion is detected.
The circuit is infact a dark activated switch that measures the ambient light level and will enable the system only when ambient light level is below a threshold value. Here an LDR (Light Dependent Resistor) is used to measure the light level. The alarm system is triggered when a “Logic High (H)” level signal is detected at its sensor input port.
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