Latest Simple LDR Projects for Engineering StudentsThe term LDR is known by many names such as a light-dependent resistor, photoresistor, photoconductor, the photocell. The term photocell is most widely used in datasheets as well as instruction sheets for domestic gear. The light-dependent resistor is a low-cost photosensitive element and was used in photographic light meters as well as in various applications like flame detectors, card readers smoke detectors, burglar detectors, and lighting control in street lamps. This article discusses bout LDR projects for engineering students.LDR Projects for Engineering StudentsProject work for students helps to enhance technical skills in engineering. There are various branches in which students can develop the projects. In our daily life, we may observe various sensors based on projects such as LDR based automatic lighting system at outdoors, an Ultrasonic sensor-based automatic water tank system, PIR sensor-based automatic door system, a heat sensor-based automatic cooler or fan or air conditioning system, and so on. Here a few innovative LDR sensor-based projects for engineering students with a brief description are discussed below. LDR ProjectsSecurity System Controlled by an Electronic EyeThe main aim of this project is to design a security system controlled by an electronic eye. This project uses a photo-sensing arrangement so, it uses a 14 stage ripple carry binary counter to detect the intensity of light using a light-dependent resistor. The o/p of the LDR makes a relay to give an alert for necessary action. This project mainly uses an LDR sensor.When the light falls on the LDR, its resistance extremely falls which leads to activating an alarm to the user. This project is suitable for providing a friendly security system for lockers, cash boxes which can be found where security is required like banks, shopping malls, jeweler shops.Security System Controlled by an Electronic Eye Project Kit by Edgefxkits.comThe circuit of this security system is placed in the locker or cash box in such a way that, when the burglar unlocks the locker and using a torch it finds the valuable things. When the light drops on the LDR then it gives an indication to the ripple counter.The circuit is placed inside the cash box in such a way that, when the burglar opens the locker and uses a torchlight to find the valuables, the light falls on the circuit which contains an electronic eye (LDR) and gives a signal to the ripple counter. This activates the alarm and specifies a robbery attempt. Here, a lamp is used to specify the theft when the light drops on the light-dependent resistor. Furthermore, this project can be developed by using GSM technology and 8051 microcontrollers. In case of robbery, a GSM modem can be connected to the microcontroller to send an SMS to the operator.Dusk to Dawn Lighting SwitchThe dusk to dawn lighting switch project is used where the light will continue on only from sunrise to sunset (dusk to dawn). Nowadays, the electricity cost is very high and it is advisable to use electricity carefully. The applications of this project mainly include where more electricity is required in the night time like highways, complexes, colleges, parks, and industries. The proposed system gives a solution for these applications and automatically the lights will be on at sunset and turn off at sunrise. So, conserving money, energy, human interference is also excluded.Dusk to Dawn Lighting Switch Project Kit by Edgefxkits.comThis project uses an LDR which senses the change in light intensity and also o/p changes accordingly. The o/p of the light-dependent resistor is fed to an IC 555 timer in astable mode, which turns on the light during sunset and turns off during sunrise. Here 555 timer is used to control the load using a TRIACTime Programmed Sun Tracking Solar PanelThis project uses a solar panel which is fixed to a stepper motor to track the sun so that full sunlight is made incident upon the solar panel at any time of the day. This is best compared to the light detecting method that may not always be correct.The solar panel is used to convert solar energy to electrical energy is very famous, but due to the moving of the sun from east to west, the solar panel may not be able to produce ideal energy. To overcome this problem, this project is implemented to track the sun using a solar panel.Time Programmed Sun Tracking Solar Panel Project Kit by Edgefxkits.comThe movement of the solar panel is done by connecting a stepper motor so that the panel keeps its face always vertical to the sun to produce maximum energy. This is attained by using a pre-programmed microcontroller to send stepped pulses in periodical time breaks for 12 hours for the motor to switch the mounted panel. Here solar panel rotates in one direction & then comes back to the start point.This project uses an 8051 family microcontroller and the motor is motivated by an interfacing an integrated circuit as the microcontroller is not capable of controlling the requirements of the power of the motor. Furthermore, this project can be developed by using a real-time clock to track the sun. This helps in keeping the necessary position of the solar panel even if the power is disturbed for some time.Security Alarm System by Photo Electric SensorThis project is used to avoid robberies in public areas like banks, jewelry shops, malls, etc. This project uses a photo-sensing arrangement and light depending sensor that detects the intensity of light and produces an alarm for representing robbery and also turns on the lights.When light falls on the LDR, its resistance extremely decreases, which leads to causing an alarm to alert the operator. This project is suitable for providing security for public areas. The circuit of this security system is placed in the locker or cash box in such a way that, when the burglar unlocks the locker and using a torch it finds the valuable things. When the light drops on the LDR then it gives an indication to the ripple counter.Security Alarm System by Photo Electric Sensor Project Kit by Edgefxkits.comFurthermore, this project can be developed by using a GSM technology and also a microcontroller. In case of robbery, a GSM modem can be connected to the microcontroller to send an SMS to the operator.LDR Projects List for Engineering StudentsThe list of LDR project ideas for engineering students is listed below.LDR based Light DetectorSolar Tracker using LDR AutomaticallyOp-amp & LDR based Light DetectorSmart Bulb Holder using LDRLDR& Transistors based Light DetectorLDR based Darkness DetectingLDR based Pocket SynthLDR based Lamp Circuit for BackyardIoT testing of Mbed using LDRLED Lighting in Aquarium using LDRLDR based potLaser Piano using LDRBattery Protector of Emergency LampLight Switch Circuit for Automatic Parking using LDRGate Lamp Circuit using LDRMicroSynth using LDRLDR based Garage LightLDR based Sensor StickAppliance Switch Controlled by Hand Gesture using LDRLDR based Monitoring of EnvironmentAlarm Circuit for Refrigerator using LDRControlling of Street Light using LDREmergency Mini LED Light CircuitStarburst using LDRSolar Lights Circuit in Outdoor GardenFlashing LED using LDRSwitch Circuit of Pole Light using LDRDesk Lamp for PC using LDRLDR based Voltage StabilizerSiren Circuit Activated by LightRelay Circuit Operated through LightSwitch Activated through Light using LDRCharger circuit using LDRAutomatic Street Light Circuit using LDRLDR based Automatic Lawn LightAlarm Circuit for Light using LDRLED Lights Circuit for Christmas using LDRLuxmeter Design using LDRLight Sensor Circuit using LDR & ArduinoLED Fading with Arduino Uno & LDRLED Brightness Control Circuit with LDR & Passive ComponentsLDR Sensor with Arduino UnoVisitor Counter using LDRLDR based Automatic Lamp in NightLDR & Transistor-based Light Sensor & Darkness Detector CircuitLDR based Current VariationLDR & Relays based Street Light ControllingCD4027 & LDR based Wireless Switch CircuitSecurity System Controlled by an Electronic Eye using LDRDigital Object Counter using LDRFence Circuit for Light through AlarmLDR based Smart Electronic CandleArduino Mood Light Controlled by Smart Phone through AlarmReal-Time Oscilloscope based on LDR & ArduinoPower LED Auto Intensity Control with LDR & ArduinoLighting Device Circuit with Simple KeyholeColor Mixing Lamp with Arduino, LDR & RGB LEDLDR based Arduino Light SensorEmergency Light using Raspberry Pi with Darkness & Detecting of AC Power Line OffSun Tracking Solar Panel Using ArduinoAlarm Circuit for Laser Security using LDRLDR &AVR Microcontroller based Measurement of Light IntensityIndicator Circuit for Dark & Light using LDR555 Timer & LDR based Detection of DarkStaircase Light using LDR AutomaticallyDark Detector using LDR and 555 Timer ICAn Efficient & Intelligent Light Control System DesignPower Failure & Fuse Indicator using LDRWhite LEDs & LDR based Twi-lightElectronics Counter using LDRDoor Guard using LDRLDR & Thermistor based Fire AlarmTwilight Switch based Flashing LightInterruption Counter using IR & LDRLDR based Controlling of Dual Motor in RobotsLDR based Sunset LampThis is all about LDR projects for engineering students. Furthermore, any technical help regarding this topic or electrical and new electronics project ideas, you can feel free to give feedback by posting your queries in the comments section below. Here is a question for you, what are the applications of the LDR sensor? Share This Post: Facebook Twitter Google+ LinkedIn Pinterest Post navigation ‹ Previous LDR – Light Dependent Resistors Circuit and Working PrincipleNext › Wireless Home Automation using IOT Related Content What is a Carey Foster Bridge & Its Working What is a Spectrum Analyzer : Working & Its Applications What is a Discharge Lamp : Design & Its Working What is an Inductive Reactance : Definition, Unit and Formula 3 Commentsplease am in need of this LDR based project on security system with automatic caller and alarm.please i need the circuit diagram more than the central bankReplydear sir,I need projects detail in pdf all types of projects electrical and electronics circuit drawing, theory and with part list and number and codes so please help me sirReplyHi Kiran Patel, For more detailed information and project ideas please refer to the link. For customization of projects please email us on team@elprocus.comReplyAdd Comment Cancel replyComment:Name * Email * Website
please am in need of this LDR based project on security system with automatic caller and alarm.please i need the circuit diagram more than the central bankReply
dear sir,I need projects detail in pdf all types of projects electrical and electronics circuit drawing, theory and with part list and number and codes so please help me sirReply
Hi Kiran Patel, For more detailed information and project ideas please refer to the link. For customization of projects please email us on team@elprocus.comReply