LDR
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DIY Smart Electronic Candle using LDR Candles have been of great use since ages, it has been guiding humans during night even before Edison came up with the idea for bulbs. Today, from Churches to kitchens, Candles are used not only to provide light when needed but also adds up to the aesthetics and provides a warm feeling. While ordinary candles work fine, they melt away pretty fast making the place nasty and… |
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Smart Phone Controlled Arduino Mood Light with Alarm I recently purchased the Neo Pixel LED strip and was quite impressed by the way it works. The tiny LED’s have an inbuilt driver IC which helps us to control each LED individually and can produce a wide spectrum of colors. Being a garish person who is obsessed with colours I really loved watching these tiny LED’s changing colors so I decided to build something on my own and… |
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Arduino Based Real-Time Oscilloscope The Oscilloscope is one of the most important tools you will find on the workbench of any electronics engineer or maker. It is primarily used for viewing waveform and determining voltage levels, frequency, noise and other parameters of signals applied at its input that might change over time. It is also used by embedded software developers for code debugging and technicians… |
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Auto Intensity Control of Power LED using Arduino “Be a bright spark, lights off till it’s dark!” sometimes we forget to turn off the lights and waste electricity and you must have also seen street light turned on in the day. We have already built few circuits on Dark detector where lights turn off automatically if it is bright outside and turns ON if it is dark outside. But this time, in this circuit we are not only… |
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Simple Keyhole Lighting Device Circuit Sometimes when we reach home in the night it’s hard to unlock the door lock, as we are not able to find the keyhole because of darkness. So, to get rid of this problem there are many keyhole lighting devices are available in the market. But we can also make one easily, using LDR. Here, we are going to control the key-hole light automatically based on the darkness outside,… |
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Arduino Color Mixing Lamp using RGB LED and LDR What if we can generate different colors using a single RGB led and make our room’s corner more attractive? So, here is a simple Arduino based color mixing lamp which can change color when there is change in light in the room. So this lamp will automatically will changes its color according to the light conditions in the room. Every color is the… |
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Arduino Light Sensor Circuit using LDR We all want our home appliances to be controlled automatically based on some conditions and that's called Home automation. Today we are going to control the light based of darkness outside, the light turns ON automatically when it is dark outside and turns off when it gets bright. For this, we need a light sensor to detect the light condition and some circuitry to control… |
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Wireless Switch Circuit using LDR and CD4017 Have you ever feel a shock by touching the switch? It does not generally happen but sometimes physical contact with switches may be dangerous. But what if the switch gets wireless and you don’t have to press any button at all for switching on or off your home appliances. So today we are building a Simple Wireless Switch Circuit in which there is no need of physical contact… |
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Smart Blind Stick using Arduino Ever heard of Hugh Herr? He is a famous American rock climber who has shattered the limitations of his disabilities; he is a strong believer that technology could help disabled persons to live a normal life. In one of his TED talks, Herr said, “Humans are not disabled. A person can never be broken. Our built environment, our technologies are broken and disabled. We the… |
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Light Detector Circuit using Wheatstone Bridge “Eyes sense what mind sees.” Like this LDR (light dependent resistor) sense if there is any light source in its sensing range. It’s true that you can manually switch OFF and ON any light, but sometime human beings shows carelessness which may cause waste of electricity. To overcome this problem, we are going to show you that how to make a Light Detector Circuit (which… |
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Automatic Street Light Controller Circuit Using LDR and Relay You have seen street light which automatically gets turned on in the night and gets turned off in the morning or day time, there are sensors who senses the light and control the light accordingly. These Street lights are an important project in smart cities.
So here in this project, we are going to make a Simple… |
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Raspberry Pi Emergency Light with Darkness and AC Power Line Off Detector In this session we are going to make a 9WATT Emergency Lamp using Raspberry Pi and Python. This lamp will automatically detect the darkness and absence of AC power supply, and light up when there is power failure and proper light is not there. Although there are various emergency lamps available but they are purely dedicated to serve single purpose… |
