Projects for Engineering Students
Today, I am going to teach you how to make an LED matrix display using Arduino. Here we had designed a 7×5 LED matrix display but can be extended as per desire. If you are using Arduino uno board the number of rows can be extended up to 14 and the number of columns can be extended up to 6. This is because there are only 14 digital pins (D0 to D13) and 6 analog pins (A0 to A5). Thus, you can make a 14×6 Led matrix display in the…
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Today in this article we are going to show you the circuit diagram and description of the 5 Band Audio Equalizer Circuit using LM833. We already control 8W + 8W Stereo with a graphic equalizer, but this time we come with 5 Band Audio Equalizer Circuit. First, let’s talk about what an equalizer is. 5 Band Audio Equalizer Circuits using LM833 Equalizer circuits are those circuits that are responsible to maintain a balance between the frequency components. The project 5 Band Audio Equalizer Circuit using LM833 divides the audio spectrum…
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In this Christmas season I wanted to do some funny stuffs using arduino. Previously few years back I had made a project Christmas decoration and music using discrete components. Now I had come with funny easy and interesting project using arduino and few other easily available electronics components. The project posted here plays three different popular Christmas tone i.e. Jingle Bell Jingle Bell, wish you merry Christmas and Santa Claus is coming to town. The interest lies on the thing you have created with you owns. Definitely this project is…
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Atmega16 based voting machine: Well, the key word; Corruption is everywhere. I believe it is what comes together with politics. Yes, here we present an attempt to sweep a dirt away from this system. The project is concerned with development of an electronic voting machine which is built around an AVR microcontroller, which help us to create a fair election process at least. Electronic voting machines (EVMs) have been a necessity in government elections. On comparison to traditional methods, this machine provides a far more secure voting environment and reliable…
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The Operating Point of Common Emitter Amplifier From the study of transistor characteristics, we find that amplification by transistor amplifier is most linear when the transistor operates in its active region. Hence the operating point must be suitably placed in the middle of the active region by suitable selection of external energy associated biasing circuit. Circuit Description of Common Emitter (CE) Amplifier Figure 1 gives the basic circuit of CE amplifier using NPN transistor bias through use of resistor Rb. Here capacitor Cb1, acts as the coupling capacitor to couple the…
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Today, we are going to show you how to make an Arduino-based Bluetooth Controlled Car. Previously we had already posted various types of robots like Arduino Gesture Controlled Robot, Dual Mode Robot, Arduino, and RF controlled Robot. The difference between previously posted robot projects and Arduino-based Bluetooth Controlled Car is, unlike others, that it does not require special types of control circuits. It can be controlled using any smartphone using the software. The best part of the project Arduino-based Bluetooth Controlled Car is you can wire it within an hour.…
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The world is all about visualization. Mesmerizing illumination has been introduced which provides a different level of satisfaction for human eyes. Using multi-pattern LEDs lights in a cubical representation is our contribution to this global trend. The project; LED Cube 4x4x4 Circuit using AT89c2051 microcontroller to create several light patterns. The cube designed for specific use in science laboratories is much easier to assemble. Previously, we had posted an LED Matrix Display using Arduino. Circuit Description of LED Cube 4x4x4 Circuit using AT89C2051 You can see the entire circuit of…
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RC oscillators are principally used for generating audio frequencies. Two popularly used RC oscillators are (i) RC phase shift oscillator using either BJT or FET and (ii) Wien Bridge oscillator. Another popularly used audio oscillator is the Beat Frequency Oscillator (BFO). We here consider these three audio oscillators. RC Phase Shift Oscillator using BJT. Figure 1 gives the basic circuit. It is a sinewave feedback oscillator and uses an amplifier followed by three section R-C phase shift network. Output of the last section is fed to the base. We assume…
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Introduction to Offline UPS Circuit We all know that most electrical and electronic appliances are solely powered by the AC supply and the problem arises when the power is cut off in the middle or there is no power at all. In such cases, uninterrupted supplies are what we look out for. This is one of those uninterrupted power supply circuits. The fact that it provides an instant power supply from the batteries than standby generators that take long to operate, makes it more practical. To make the use of…
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Popular sinewave feedback L-C tuned oscillators are listed below. These are principally used for generating RF oscillations. Tuned Collector Oscillator Tuned Based Oscillator Hartley Oscillation Colpitts Oscillator Clapp Oscillator Crystal Oscillator Tuned Collector Oscillator Figure 1 gives the basic circuit. A parallel tuned L-C circuit placed in the collector circuit constitutes the load impedance and determines the frequency of oscillation. The output voltage developed across the tuned circuit is inductively coupled to the basic circuit through the coil L2. The winding direction of the two coils L1 and L2 are…
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