8 Channel PWM LED Chaser for 16F628A and 16F88

Description This neat little circuit provides 8 LEDs directly driven from the PIC along with a single mode control switch.  The firmware elsewhere on this page drives the LEDs with a 5 bit PWM signal providing each of the 8 LED channels with four levels of intensity; off, dim, mid, bright.  A number of sequences are programmed into the firmware to provide some interesting visual effects and chase sequences, ...

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Throbbing Apple Logo Sticker using PIC10F206 microcontroller

Throbbing Apple Logo Sticker This little gizmo adds the iconic "sleeping Mac throb" to an ordinary Apple logo decal. The idea for this came about when passing by the Apple Store in Palo Alto, California late one night. After hours, when the store is "asleep," the lighted logos out front pulsate just like the power indicator on a sleeping Mac, and I just about fell over laughing. Unrelated, the following day ...

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Aurora 9×18 RGB LED art using PIC24F08KA101 microcontroller

Aurora 9x18 RGB LED art *** Check out my blog for updated version of this project and more! *** My obsession of LEDs has led me to this. Aurora 9x18 is a thing of beauty (if I can say so myself) - has 162 RGB-LEDs in a circular configuration. The color of each circle is controlled by a microcontroller using a twisted form of PWM. The microcontroller (PIC24F08KA101) only has one PWM module, yet Aurora is cap ...

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In-Circuit debugger, created by E.E. Atanasios Melimopoulos using PIC16F628 microcontroller

This project was sent by Electrical Engineer Atanasios Melimopoulos (Copyright (c) June 15, 2007) INTRODUCTION: In-Circuit-Debuggers, as you may already know, have become the PIC's debugging standard tool for many programmers because it's easy use and handy interface to the target picplaced- board. They come with MPLAB plug-ins that provides a full rich set of commands and functions in order to debug your c ...

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Speed control of DC motor by PWM in Proteus simulation

Hello friends here is a proteus simulation of speed control of DC motor with the help of Pulse width modulation (PWM) control, PWM signals are generated by 8051 microcontroller. As we have discussed earlier that proteus is a really good simulation software for beginners and 8051 is the most basic among all microcontroller so this can be a very good project of motor control if you are doing it for first time ...

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chipKIT Tutorial 5: Pulse width modulation (PWM)

Pulse width modulation (PWM) is a technique of controlling the amount of power delivered to an electronic load using an on-off digital signal. The key idea behind this technique is that the average DC value of the digital signal, and hence the power delivered to the load, can be varied by varying the duty cycle of the signal. This method is commonly used for controlling speeds of DC motors and brightness of ...

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

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 key pad register values which are allotted by MC. You can also Subscribe to FIN ...

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PWM DC Motor Speed Controller Circuit Using PIC16F877A Microcontroller

In our last PIC online tutorial we have covered PWM generation using PIC Microcontroller. As I told earlier PWM has wide application in electronics and robotics engineering.In this article I’m gonna show you one of the important applications of PWM in Robotics, it is called Pulse Width Modulation motor speed control. The method of generation of PWM signal is the same as before and this signal is applied to ...

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Digital DC Power supply using PWM with PIC microcontroller

In our lab I saw many DC power supply which have a variable knob to regulate the output. I was dreaming to make such a project where I can regulate the voltage using push button.As I am not an industrial level expert so this project is just about a digital DC power supply of small range(5V-12V). You can press push buttons to increase or decrease output voltage.Here we use LM317 to regulate the output voltag ...

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How to Glow an LED using PWM with PIC Microcontroller

Pulse Width Modulation (PWM) is a technique in which the width of a pulse is modulated keeping the time period of the wave constant. One cycle has a fixed time period called ‘Period’ and a varying on time called ‘Duty cycle’. The entire wave can have two voltages levels either logic 0 or logic 1. The PWM wave is very useful in the digital systems, since this can be used to generate different voltage values ...

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