pwm

Speed Control of DC Moto

Speed Control of DC Motor using Microcontroller by using PWM ECE Project using Pic

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This is a good Electronic project report on Speed Control of DC Motor using Microcontroller by using PWM. In this system, a micro controller is interfaced with a LCD, Keypad and DC motor driver. The Micro controller is used for controlling the DC motor by producing the PWM pulses. These pulse widths are produced according to the …

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Voice Input And Output Part 23 25

How To Use PIC Microcontroller For Voice Input And Output- (Part 23/25)

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Microcontrollers are purely digital devices which work on logic0 and logic1 voltages; still they are widely used for analog signal processing. There are specialized signal processors chips available which are custom made for particular applications; however a general purpose microcontroller is more than enough for small kind of signal processing applications like audio signal input and …

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Generate Sound

How to Generate Sound using PWM with PIC Microcontroller- (Part 22/25)

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Pulse Width Modulation (PWM) is a technique in which the width of a pulse is modulated keeping the time period of the wave constant. The ON time and OFF time can have any different values in the wave cycles, but the sum of the ON time and OFF time remains same for the entire cycles. PWM …

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PIC sound player

PIC sound player (PCM to PWM converter) using PIC18F1320

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Description This project makes a PIC microcontroller play audio PCM sounds using PWM modulation! Pulse-code modulation (PCM) is a digital representation of an analog signal where the magnitude of the signal is sampled regularly at uniform intervals, then quantized to a series of symbols in a digital (usually binary) code [1]. Pulse-width modulation (PWM) of a signal or power …

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Piezo speaker

Driving a piezo speaker with a PIC using pic-microcontroller,

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Overview A Pulse Width Modulation (PWM) output from a PIC microcontroller can be used to play tones on a piezo speaker. With this, musical scales and simple songs can be played on the piezo speaker. Piezoelectric speakers operate by the converse piezoelectric effect: when a voltage is applied across the terminals, the piezoelectric material in …

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Board Diagnostics Reader

Automotive On-Board Diagnostics Reader Using Atmega32

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Introduction Our project is a hand-held device that is capable of communicating with any vehicle that uses pulse-width modulation (PWM) data-link layer. Such devices are commonly referred to as On-Board Diagnostic scanners. Vehicles that typically fall into this category are Fords made between 1996 and 2007. In our case, we used a 2003 Ford Mustang …

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