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Science Technology Engineering and Mathematics (STEM):

STEM Land: STEM Land  is a place for ‘Learning’ which we are creating in Udavi school. The vision behind the STEM is learning based on Concepts, practical observation & abstraction. In short “Mediocrity to Excellence“. It has large variety of materials (...

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LtSpice – Introduction

LTspice IV is a high performance SPICE simulator, schematic capture and waveform viewer with enhancements and models. The simulator software can be downloaded from the following link: ltspice.linear-tech.com/software/LTspiceIV.exe The following is a circuit on how to use a switch ” .model ”...

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Area with GeoBoards

I was doing shapes( squares, rectangles and triangle) with 4th and 5th grade children. Then I thought of introducing areas also to them. Doing areas with formulas would be a little difficult for them as they are not yet fully comfortable with...

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Calling C function from Python using thread

ThreadTest: Lets loot at a sample program for better understanding of threads. It was written in python extension C( calling C function from python). This is an example for parallel processing. So I made a program to print string ( some words...

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Programming the Deek Robot

The Deek robot is similar to the Arduino pro mini with a ATmega 328. it has no USB interface. i used the Arduino UNO to program the Deek robot, without removing the micro controller ATmega 328 from the UNO board. 1. Connect...

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Tabulating the obtained values

        The frequency and the sine wave was set by the function generator. The input, output wave forms were observed from the CRO. The conditions taken were  a 50KΩ , 1KΩ and a current source. The input was fed to the 2.1...

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NPN Transistor as an Amplifier :

We wanted to use the transistor as an amplifier. The input voltage at the base was 3v. Two resistors, one at the emiiter(R1) and the other at the collector(aR1) were connected. 9v supply was given at R1. Constraints : We wanted head...

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PNP Transistor as a Current Source

We wanted to use a transistor as a current source. Two resistors, one at the emiiter(R1) and the other at the collector(R2) were connected. A voltage divider circuit with a supply of 9v was connected at the base that could supply certain...

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Amplifier – Simulation and Results

First started with constructing constant current source using PNP transistor with 9V supply voltage. CONSTANT CURRENT SOURCE:             voltage reading:    3.32V                                ...

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SpeeDe V_03

SpeeDe V_03: The aim of the third version of the SpeeDe is to improve the sensitivity to capture the speed of even smaller object. In this regard, I have done some modification in the program ( using the concept of interrupts in...

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