Personal webpage of Renie S. Marquet

Electronics 

 

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Me and electronics

My interest in electronics began when I was finishing high school, bought some magazines, did some light assemblies as rhythm, sound effects circuits, alarms etc.. And so I kept the electronics as a hobby, until lack of time to be working, resources and difficulty in finding material for the assemblies (the problem is worse in my town today), I ended up leaving this hobby inert for many years, in 2000 while going through some magazines, interest emerged furiously, and now I'm trying to recover all this time, researching and reading everything I can about it.

 

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Documentation:

Routines for Graphic LCD with KS0108 - BASCOM (Basic)

Author and collaborator: André Luiz Guimarães

File  ZIP

Scheme recorder and test board for PIC

Author and collaborator: Jean Carlos Esser

File  pdf

Tutorial for using / configuring the software IC-Prog

Author and collaborator: Jean Carlos Esser

 

File  ZIP

Routine implementation of Microsteping with PIC

Author and collaborator: Marcos Vonnilmam

 

File  ZIP

Tutorial implementing PWM by software

A simple method to implement a PWM by software

 

File  pdf

 

Tutorial for using memories 24xxxx (I2C)

This document describes the basic principle of using I2C communication, focused primarily on memories SEEPROM 24xxxx. 

 

File  pdf

 

Tutorial for making Printed Circuit using laser printing

This guide describes step by step process to produce a PCB layout using a laser printed, an inexpensive, quick and can break a twig when you need to sign for test / prototype. The document provides several photos of the process. 

 

File  pdf

Tutorial use of LCD characters (based on HD44780)

Tutorial explaining how to use LCD (Liquid Crystal Display) of characters that have the HD44780 controller or compatible. Characteristics are presented, times, ways of programming C and ASM routines etc..

Note: As never programmed in C, the routine sample in C may need some adjustment (rev.19/01/2005).

 

File  pdf

Tutorial for making Printed Circuit using photosensitive resin

This tutorial was written to help a colleague, he explains step by step process for making printed circuit boards using photosensitive resin, the mounts exhibiting a simple and inexpensive and a tub to corrosion. The document provides several photos of the process.

 

File  pdf

Global index magazines Saber Eletrônica

Index of magazines Saber Eletrônica since issue number 46 April 1976, but is not complete, some issues in the collection were loaned and never returned, if someone possesses the issues that are missing or know where to find, I'm interested in buying them.

updated on 06/06/2010 - Thanks to colleagues / friends for the donation of several magazines that I lacked.

File pdf

Tutorial for using the Process Expert

Tutorial explaining the creation of projects for microcontrollers using Process Expert. Author and collaborator: Wellington Messias.

File pdf

Tutorial for use of Nokia LCD. Author and collaborator: Wellington Messias.

Files

Tip 5

To use a PC ATX power supply multi-voltage source as bench takes two simple steps: connect the green wire to ground and maintain a minimum load on the +12 V, for just such an LED with a limiting resistor of 220 ohms (empty the power turns off automatically)

Voltages present on the wires: Yellow = +12 V, Red = +5 V, Black = ground; Blue =-12V,-5V = White, Orange = +3.3 V, Purple = +5 V (this even with the power turned off, green wire + black wire = ON)

Note: there are many duplicate wires that can be removed (black, red, yellow and orange); take advantage of the yellow wires and one for blacks to turn the LED and its resistor which also serves to signal when the power is on.

Tip 4 obsolet

As I have received several requests for information of stores where to find germicidal lamps, down two stores I found lamps of 8 Watts a few days ago:

Spectro Light - Av. Marechal Floriano 50-Centro-RJ tel.2253-6080 (R$13,00)

Relumi - Rua do Acre 10-Centro-RJ 

Tip 3:

Where to send equipment, board, component, or any other object in the mail there is little space in the box instead of filling the box with crumpled newspaper which is not very hygienic, use tarucel cut into small pieces, your shipment will look more professional . Tarucel is a type of foam found in stores of plastic materials (R$ 0.19 meter), used for fixing glass in steel frames. 

Tip 2: (obsolet  actual costs down)

If you will use a socket Zero Insert Force (and expensive!) In any assembly for their own use, solder a socket on the board and turning the ZIF socket on it, so a single ZIF can be used in various circuits (one at a time, off course), but beware, use socket turning, because the plated sockets (the cheapest) are not suitable for multiple insert operations presenting bad contact quickly. My Willem Prog. and the PPWin share the same ZIF!

Tip 1:

If you prepare your own printed circuit boards and has difficulty getting drills for drilling, look for a dental supply store, that's right! Dentist's drill, available in various types and diameters, and cheaper than drilling in the electronics stores! You can even get some old drills with your dentist!

 

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Assembly:

 

Mounts some designs found on the internet, usually with some modifications due to available materials, etc. desired use.

Simplified version of Engineer's Assistant made in the AN689 Microchip.

The author of the project has achieved the feat to put several tools in a single PIC16F84, occupying 1023 bytes of 1024 available.

In my mount I delete all part of the circuit for the use and charging of rechargeable batteries while not changing the original program from which much of this was intended to control.

As the Application Notes only presents the scheme and program listing source, here you find the site with the full project.

My PCB version Place of components

 

Frequencímeter 50 MHz using PIC16F84

Original design .......................( excuse me, but the source do not has the author's name, and the link I have is no longer valid, as soon as possible to complete this information)

As we only had a 2-line LCD display for 16 characters, adapted the program for it, include the word Frequency Meter on the line over and design a compatible card.

My version : PCB , PCB w/ components50MHz.ASM

Note: The board has several holes in the locations of trimpots to allow others to use different models.

Willem Programer

Project by Willem Kloosterhuis 

Excellent programer, record memories EPROM, EEPROM, SEPROM, PIC's, Atmel etc etc. etc.. There are several versions of the PCB layout made by others, including a forum about  this programer into site www.willem.org ,worth a visit


My board to PICs of  28 and 40 pins, PCB, instructions

PPWin

Programer to PIC's simple, inexpensive

Project by Steven Willis

My board for PICs of 28 and 40 pins, PCB, instructions

PROPIC 2

Version with improved source Vpp and simple side board

Projeto original com esquema, layout etc. aqui

Project of residential alarm. Author and contributor: Wellington Messias

Files

 

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My Projects:

Cable tester of computers

First version, fully manual

schematic 

Cable tester of computers digital version

This is my first project after several years away from the electronics assembly was developed using common CMOS IC's, all tested in protoboard, the construction itself was divided into modules.

schematic 

Logic level prober

Simple tester indicating the logical level through LEDs and injector pulse digital

PCB               

Board tests for control by the PC parallel port

This board was set up to test the signals present on the PC parallel port, to facilitate connecting routes with protoboard and allow other simpler tests.

PCB 

Remoto Serial 1.1 Beta (for PIC16F877A)

Program for the PIC to operate remotely by commands from the PC via the serial

See the new page Project Remoto Serial

Download source ASM

To the program Remoto Serial PC see in Computer / My utilities

schematic  

Command Summary 

 

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Link's:

Websites of forum ASM51 participants 

Kraft - site of  Egidio 

Eletroinf - sites of Ricardo

Hehepaz - site of Zé Marlon


"Romi peigi " do Cliceu - site of Cliceu

Several Projects

Bowden's Hobby Circuits

Electronic Circuits for the Hobbyist

JONAS BAIRROS - Circuitos


Hobby Circuits, The Hobby Corner, Imagineering On-line Magazine

Electronic Projects Online

Links about LCDs

AZ Displays, Inc

Earth Computer Technologies' Home Page



 

Manufacturers and other sites where to find datasheets

Microchip

ON Semicondutores (Motorola)

National

Philips Semiconductors

Intersil

Texas Instruments

ROMSERVICE Databook


Chip directory

 

Electronics for computers

Computer Hardware Links

HwB The Hardware Book

CompInfo Directory

 

Magazines, Forun and other interest sites 

FórumASM51 - nosso ponto de encontro!

EPE Magazine -EPE magazine's website, projects with PICs, etc.

Transistor 548 - Personal website of J.Sabino about electronics and informatic

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