LDR Sensor Based Sunset Lamp using IC NE555 Timer Circuit automatic lights flicker due to the change in light intensity at dawn and dusk. So compact fluorescent lamps (CFLs) are unsuitable in such circuits as flickering may damage the electronic circuits within these lamps.
The circuit described here can solve the problem and switch on the lamp instantly when the light intensity decreases below a preset level. The LDR Sensor Based Sunset Lamp using IC NE555 Timer Circuit uses popular timer IC NE555 (IC1) as a Schmitt trigger to give the bistable action.
LDR Based Sunset Lamp using IC NE555 Timer Circuit
The set and reset functions of the comparators within the NE555 are used to give the instantaneous action. The upper threshold comparator of IC1 trips at 2/3Vcc, while the lower trigger comparator trips at 1/3Vcc. The inputs of both the threshold comparator and the trigger comparator of NE555 (pins 6 and 2) are tied together and connected to the voltage divider formed by LDR1 and VR1. The voltage across the light-dependent resistor (LDR1) depends on the light intensity. photoresistor and a light detector using ic 555
LDR Sensor Based Sunset Lamp using IC NE555 Timer Circuit
LDR or Light-dependent resistor is a sensor that is used to detect the intensity of light. It is basically a photoresistor whose resistance decreases with the intensity of incident light. In this project, we will be using an LDR sensor to make a sunset lamp that turns on automatically when the sun sets and turns off when the sun rises.
An LDR sensor is a light-dependent resistor that is used to detect the level of light in an environment. When the level of light decreases, the resistance of the LDR sensor increases. This increase in resistance can be used to trigger a circuit that turns on a lamp.
The LDR sensor can be used to create a sunset lamp that automatically turns on when the level of light decreases. The sunset lamp can be used as a nightlight or as a way to add ambient lighting to a room.
The sunset lamp can be created using a simple IC NE timer circuit. The IC NE555 timer circuit will turn on the lamp when the LDR sensor detects a decrease in light. The sunset lamp can be placed in any room in the house, and it will provide a gentle light when the sun goes down.
LDR Sensor Working
An LDR sensor is a light-sensitive resistor that is used to detect the presence of light. When light falls on the sensor, the resistance of the sensor decreases. This decrease in resistance can be used to trigger a circuit that turns on a lamp.
The LDR sensor can be used to create a sunset lamp that turns on when the sun goes down. The sensor is placed in a location where it can detect the level of sunlight. When the sun goes down and the light level decreases, the sensor triggers the circuit and turns on the lamp.
The sunset lamp is a great way to create ambiance in your home. It can be used as a nightlight or to add a bit of light to a room that is otherwise dark.
IC NE555 Timer Circuit
1. The IC NE555 timer is a very popular circuit that can be used to create a sunset lamp.
2. This circuit uses an LDR sensor to detect when the sun has set.
3. When the sun sets, the LDR sensor will send a signal to the IC NE555 timer.
4. The IC NE555 timer will then turn on the lamp.
5. The lamp will stay on for a set amount of time, after which it will turn off automatically.
6. This sunset lamp is a great way to add some ambient lighting to your home. It’s also a great way to save energy, since you won’t need to leave a light on all night long.
Working of the Circuit
The circuit is based on the IC NE555 timer. The IC NE555 is a popular 8-pin chip that can be used to create a variety of timer-based circuits. In this circuit, the IC is used to create a PWM (pulse width modulation) signal. This signal is used to control the brightness of an LED.
The LDR (light-dependent resistor) is used to detect the level of light. When the level of light decreases, the resistance of the LDR increases. This increase in resistance triggers the IC NE555 timer, which then produces a PWM signal. This signal is sent to the LED, which increases in brightness as the level of light decreases.
The circuit can be powered by a 9V battery. The LED can be any color, but a white LED is recommended for best results.
There are several advantages to using an LDR sensor-based sunset lamp with an IC NE timer circuit.
One advantage is that it is very energy efficient. The sunset lamp will only turn on when the sun goes down, and it will turn off automatically when the sun comes up. This means that it won’t waste any energy during the day.
Another advantage is that it is very easy to set up and use. You don’t need to worry about setting a timer or anything like that. The sunset lamp will automatically turn on and off as needed.
Finally, this type of sunset lamp is very reliable. It won’t randomly turn on or off like some other types of lamps can. You can be confident that it will only turn on when the sun goes down, and turn off when the sun comes up.
There are a few disadvantages to using an LDR sensor-based sunset lamp with an IC NE timer circuit. First, the circuit can be expensive to build. Second, the circuit is not very accurate, and the light output may not be exactly as desired. Finally, the circuit is not very adjustable, so it may be difficult to get the perfect light output.
The LDR sensor-based sunset lamp is a great addition to any home. It can be used as a night light in the hallway or bedroom, or as a lamp to provide light in the event of a power outage.
This lamp is also a great safety feature. If there is a fire in the home, the LDR sensor will detect the smoke and turn on the lamp. This will provide light for people to evacuate the home safely.
The sunset lamp can also be used as a security feature. If someone breaks into the home, the lamp will turn on and notify the homeowner.
Overall, the LDR sensor-based sunset lamp is a versatile and useful tool that can be used in a variety of ways. It is a great addition to any home.