Lytro Light Field Camera – The Next Generation Camera is Here
Lytro Light Field Camera Since its invention, the technology behind a camera has developed a lot beyond imagination. Nowadays, the device has become so sleek in design that it is integrated with other gadgets like mobiles and computers. To take a good photo, a photographer needs to use a camera with good resolution and focus. What if the camera had a technique by which the focus could be provided after the photo was taken? This would give the photographer enough time to sort out the correct focus required for the picture taken. This technique has been introduced in the “lytro…
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Flip Flop Conversion
For the conversion of one flip flop to another, a combinational circuit has to be designed first. If a JK Flip Flop is required, the inputs are given to the combinational circuit and the output of the combinational circuit is connected to the inputs of the actual flip flop. Thus, the output of the actual flip flop is the output of the required flip flop. In this post, the following flip flop conversions will be explained. SR Flip Flop to JK Flip Flop JK Flip Flop to SR Flip Flop SR Flip Flop to D Flip Flop D Flip Flop…
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A Note on Character LCD Displays
There are many display devices used by the hobbyists. LCD displays are one of the most sophisticated display devices used by them. Once you learn how to interface it, it will be the easiest and very reliable output device used by you! More, for micro controller based project, not every time any debugger can be used. So LCD displays can be used to test the outputs. Obviously, for last possibility, you need to know how to use this stuff pretty well. Note 1: We have sub divided this article for easy navigation as shown below:- 1. Pin Configuration 2. Block…
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Contact Lenses with “The Terminator” Mode!!
Special Contact Lens In the movie “The Terminator”, we see Arnold Schwarzenegger check out the complete profile of the subject he is about to face. A similar technology has been developed by Babak Parviz, an electrical engineer at the University of Washington. Babak designed a lens that can be used to display a single pixel at a time. This display can be switched on and turned off through a wireless medium. The lens consists of an IC which stores the energy, along with an LED that shoots the light towards the eyes. But, the lens is not capable of intercepting…
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The Single Atom Transistor Concept
Worlds Smallest Single Atom Transistor A group of researchers including Michelle Simmons and her colleagues developed a single phosphorus atom transistor using a Scanning Tunneling Microscope (STM) at the University of New South Wales. The 3-dimensional perspective of the device is shown in the figure above. Till date, this is known to be the smallest transistor ever built, and ever to be built in future. Thus, this device will be known to be the stepping stone to quantum computers. The single phosphorus atom device was manipulated using the STM. Using the STM to design and control nano-scale circuits was very…
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Log amplifier
Log amplifier. Log amplifier is a linear circuit in which the output voltage will be a constant times the natural logarithm of the input. The basic output equation of a log amplifier is v Vout = K ln (Vin/Vref); where Vref is the constant of normalisation, and K is the scale factor. Log amplifier finds a lot of application in electronic fields like multiplication or division (they can be performed by the addition and subtraction of the logs of the operand), signal processing, computerised process control, compression, decompression, RMS value detection etc. Basically there are two log amp configurations: Opamp-diode…
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Handling the Digital Input Output in AVR Micro Controllers
I have already discussed about few solutions to get into AVR programming. Now this is the first article with programming. Let us start with the basics. Digital input output is the basic feature supported by the AVR micro controller. To facilitate digital input output, three registers are associated with each port of the micro controller. Data Direction Register- This register determines which of the pins will act as an output port, and which of them as input. Data Output Register-This register holds the Data output to the port. Data Input Register- Reads data from the port Now let us have…
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Audio oscillator circuit
ICL 8038 waveform generator. ICL8038 is a monolithic waveform generator IC that can produce sine, square and triangular waveforms with very little distortion. The frequency can be programmed from 0.001Hz to 300 KHz using external timing capacitor and resistor. Frequency modulation and sweeping can be attained by using an external voltage. Other features of the ICL8038 are high linearity, high level outputs, simultaneous sine, square, triangle wave outputs, low external parts count, high temperature stability etc. The working of ICL8038 is as follows. The external timing capacitor (C2 in the circuit diagram) is charged and discharged using two internal current…
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Arduino (For beginners)
Ever thought of working with microcontrollers, but resisted due to lack of knowledge about them? Ever made a futile attempt of reading a whole microcontroller datasheet? Ever found hard learning (memorizing) the assembly syntax and keywords? Can’t afford to buy the costly USB programmers for your microcontrollers? Get ready.! Arduino answers your laments! What is Arduino?: Well, first let me explain what arduino exactly is. Arduino in general is a opensource platform targetting hobbiysts. Most of us using the interent would have came across the word “opensouce”. Opensource is a methodology where, the developers of a software/hardware give the end user…
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Waterless Washing Machine Cleans Laundry Through Magnetic Levitation
Waterless Washing Machine – Laundry Orb New inventions have made strainful works always easier for people. Let us take an example of a washing machine. In early days, people used to wash their own clothes by hand and scrub all the dirt away using a brush and detergent. Later, the washing machine was invented, which simplified laundry cleaning. The device was further developed to produce semi-cleaners and lately fully automatic washing machines. A new concept has been introduced by a a designer named Elie Ahovi, which works under the principle of magnetic levitation. The device, named as “Laundry Orb” consists…
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