LDR
|
Sun Tracking Solar Panel using Arduino In this article, we are going to make a Sun Tracking Solar Panel using Arduino, in which we will use two LDRs (Light-dependent resistor) to sense the light and a servo motor to automatically rotate the solar panel in the direction of the sunlight. The advantage of this project is that the Solar panels will always follow the sunlight will always face the sun to get… |
|
Simple LDR Circuit to Detect Light We are going to build a simple Light Sensing circuit or Light Detector using LDR - a resistive light sensor, to control the ON-OFF of the system associated with respect to the intensity of light that falls on it. Components Required: LDR (Light Dependent Resistor) BC547 Transistor LED Battery 9V DC Potentiometer (5KΩ) Resistor (1KΩ… |
|
Laser Security Alarm Circuit Security is main concern for various buildings, houses and offices. There are a variety of security alarms available in market which uses various types of technology for intruder detection like infrared sensors, motion sensors, ultrasonic sensors, laser sensors, etc. Previously we have also built some security alarm circuits like this PIR sensor based motion detector and… |
|
Emergency Light An emergency light is an integral part of household electronics nowadays. We all know an Emergency light is used during a power failure to light up the home. As it is used during a power failure, it should last long, hence generally bright white LEDs are used in emergency lights, because they produce more light and consume less power. Emergency light is a very useful… |
|
Light Intensity Measurement using LDR and AVR Microcontroller In this project we are going to interface LDR with ATMEGA8 microcontroller, and with this we can measure LIGHT INTENSITY in the area. In ATMEGA8, we are going to use 10bit ADC (Analog to Digital Conversion) feature to measure the light intensity.
Am LDR is a transducer which changes its resistance when… |
|
Dark and Light Indicator Circuit In this project, we are going to make a day and night indicator (or dark and light indicator) which will indicate if there is a dark or light in the surroundings. Some applications of this circuit, are street light controlling, home/office light controlling, day and night indicators, etc. Components Required IC LM358 -1 150 Ohm… |
|
Automatic Staircase Light We all know that one of the places where power wastage occurs most in homes and offices is at staircases. We usually turn on light at stairs and leave it in a hurry. In this project we are going to design a stair case lamp which works on battery and only turn on the lights only when someone is present at there. This circuit can be used to save power and it can be used as an… |
|
Simple LDR Circuit Here we have explained a dark detector circuit by using 555 timer IC and a LDR (Light Dependent Resistor) which senses the light in surroundings and if it does not find the light, it triggers the IC and glows an LED attached with the circuit. In place of LED we can also use a buzzer or speaker to use it as dark detector alarm. The concept of this LDR circuit is quite simple… |
|
Dark Detector using LDR and 555 Timer IC Darkness detector is simply a LDR (Light Dependent Resistor) interfaced square wave generator. In this project the square wave generator is developed as a 555 Timer IC based ASTABLE MULTIVIBRATOR. As this circuit is primarily based on the working principle of LDR, before going any further to understand this LDR circuit, we must get the basic details of the LDR. The figure… |
