99 000 RPM Contact-Less Digital Tachometer Featuring LCD display and automatic DATA hold function By Ibrahim Kamal Last update: 14/7/10 This article describes how to build a contact -less tachometer (device used to count the revolutions per minute of a rotating shaft) using a 8051 microcontroller and a proximity sensor. As the name implies‚ what makes this device special‚ is that it can very accurately measure the rotational speed of a shaft without even touching it. This is very interesting
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THE GLUCODAY DIABETIC MONITORING DEVICE. INTRODUCTION The GlucoDay® Diabetic monitoring device is used to continuously monitor blood glucose level all day long. Patients using invasive self-monitoring devices assess blood glucose irregularly because of the associated pain and inability to carry out measurement at night while they are sleeping (Boland et al.‚ 2001; Maran et al.‚ 2002). Precise and accurate continuous monitoring of blood glucose level using the GlucoDay® device is however of immense
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Many terms have been used in connection with conceptual contexts for research‚ including theories‚ Models‚ frameworks‚ schemes and maps. There is some overlap in how these terms are being used‚ partly because they are used differently by different writers‚ partly because they are interrelated. Theories The term theory is used in many ways. For example‚ nursing instructors and students frequently use the term to refer to the content covered in classrooms‚ as opposed to the actual practice of
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High-level Design: This project used an Atmega644 microcontroller clocked at 20MHz in each of the two functional modules for processing. Memory storage is provided by a standard Secure Digital (SD) card. Xbee modules provide bidirectional wireless communication and we use the TLV5616 DAC chip for generating analog audio. The LM358 dual op amp provides active filtering to the output of the DAC. Music files can be added to the SD card using any computer with a multimedia card reader. Once the
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Path planning 2D plotting machine for efficient automated PCB drilling. S.C Alwis‚ A.S Premarathna‚ Y.P Fonseka‚ S.M Samarasinghe J. Wijayakulasooriya ABSTRACT 2D vector plotters are designed to take a pointer to any given coordinate in the xy plane. An application of this plotting device is in PCB drilling. In PCB drilling the location of the drill holes are fed into the system which will drill the PCB at the specified coordinates. The main objective of this project is to be able to take
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abstract relation than schematic portrayal. The capital contains four lions‚ standing back to back‚ mounted on an abacus with a frieze carrying sculptures of an elephant‚ horse‚ bull‚ and a lion. In this way‚ four rivers of India is represented. The animals are separated by elapsing wheels‚ which symbolizes time. Because wheels are also mentioned in Buddhist religion‚ it can be explained as spiritual purpose as well. Since the sculpture has a schematic relation‚ it is hard
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idea is that human knowledge bis organized and stored in memory accrding to re – occuring events. Widdowson in ajideh (2006 : 4) postulates two levels of language : a systematic and a schematic level. The systematic level includes the phonological ‚ morphological and syntactic elements of language‚ while schematic levele relates to our background knowledge. Wilson (2008:15) schemata refers to the world knowledge‚ knowledge of the speaker or context‚ an analogy (if the situation is familiar‚ listeners
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DC Converter designed in the breadboard and printed circuit board (PCB). Scope and delimitation This experiment only makes the output voltage to step down. The output voltage can’t be bigger than the input voltage. Methodology I. Schematic Diagram II. How the circuit works A 555 timer used to generate a square wave. It produces a negative voltage which is relative to the negative terminal. When the output of the 555 timer (referring to pin 3) became positive‚ the electrolytic
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digital logic chips. What that means is that you can program them to do almost any digital function. Here’s the general workflow when working with FPGAs: You use a computer to describe a "logic function" that you want. You might draw a schematic‚ or create a text file describing the function‚ doesn’t matter. You compile the "logic function" on your computer‚ using a software provided by the FPGA vendor. That creates a binary file that can be downloaded into the FPGA.
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COURSE CODE : PRS1034 ART AND HANDWORK ASSIGNMENT 2 FIRST SEMESTER NAME : AMMAARAH ESSACK STUDENT NUMBER : 50937235 UNIQUE NUMBER : 728589 TABLE OF CONTENTS PAGE QUESTION 1 1.1 Scribbling stage 1.2 Pre-schematic stage 1.3 Schematic stage 1.4 Gang-age stage QUESTION 2 2.1 Food in art. 2.2 Three major learning styles. 2.3 Schirrmacher’s stages of artistic development. 2.4 Ways to facilitate creative thinking in children. 2.5 Ten art materials which are potentially unsafe
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