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Digital  / Logic Circuits   Page 11b
Digital or Logic Circuits:  #'s    A     B     C     D     E - F     G - H
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Last Updated on:
Wednesday, November 29, 2017 05:38 AM

Circuits Designed by Dave Johnson, P.E. :
  • Poor Man’s Digital Counter Using Pedometer
    There are many occasions when you may want to count something electronically.  Perhaps it is car traffic on a street or items moving down an assembly line.  It might be the number of times a machine is activated or maybe you want to count the number of people entering doorway.  Commercial counting modules do exist but if you want to use something cheaper, you can modify a pedometer to do much the same thing....

Links to electronic circuits, electronic schematics, designs for engineers, hobbyists, students & inventors:

 

 

PIC16F84 Based Morse Code Reader -  (design circuit added 8/02)
PIC16F84 Debugging Terminal -  .....
PIC16F84 LED Chaser -  There are several projects on this page.  Please scroll down to find the LED Chaser…. [Jason from Roanoke, Virginia]
PIC16F84 Line Following Robot -  The JavaBot1 is a small line following robot designed to follow a black line drawn on a dry erase board. It is designed to follow very tight curves. The software still has lot's of room for improvement but works well as is…. [Peter Jakab, Electrical Engineer, Engineer of Informatics]
PIC16F84 Miniature Real Time Controller -  Build a simple real-time controller with PIC16F84 running at low power X-tal 32,768Hz. Daily scheduler for 6-channel resided in 64-byte EEPROM can easily be preprogrammed  using Nigel PicProg..... [Wichit Sirichote]
PIC16F84 programmer -  Build a low-cost and very simple serial programmer for a PIC16F84 Microchip Flash Microcontroller. Below picture is my personal writer for F84 chip, it works very nice with Nigel WPicProg V1.20…. [Wichit Sirichote]

PIC16F84 RF remote Controller -  With a handful of inexpensive components, a little creativity, and the power of PicBasic, you can build some pretty outstanding robotics creations as Rob Arnold proves with his Ruf-Bot project… [Rob Arnold]
PIC16F84 Serial I/O Expander with Picbasic -  This article shows how to use the PIC16F84 microcontroller with PicBasic to design a quick & effective, serially controlled, I/O-Expander.  Using PicBasic makes developing handy  single-chip devices like this extremely simple…. [Copyright Reynolds Electronics]
PIC16F84 Tone Generator -  (electronic circuit added 4/05)
PIC16F84 Tone Generator 6 Bit -  (electronic circuit added 4/05)
PIC16F84 Tone Generator with Source Code -  (electronic circuit added 4/05)
PIC16F84/PIC16F87x-In-System-Programmer -  (electronic circuit added 4/05)
PIC16F873 Digital Clock -  (circuit / schematic design added 6/06)
PIC16F876 Datalogger -  (electronic circuit added 4/05)
PIC17cxxx to PIC18cxxx Migration -  Microchip Application Note Published 28-Sep-99  (app note added 2/06)
PIC18C CAN Routines in 'C' -  Microchip Application Note Published 5-Nov-01  (app note added 2/06)
PIC18c Ecan C Routines -  Microchip Application Note Published 28-Feb-05  (app note added 2/06)
PIC18cxxx/PIC16cxxx DC Servomotor -  Microchip Application Note Published 25-Jul-00  (app note added 2/06)
PIC18xxx8 can Driver with Prioritized Transmit Buffer -  Microchip Application Note Published 9-Sep-02  (app note added 2/06)
PICMASTER Support of Microsoft WindowsTM DDE -  Microchip Application Note Published 26-Aug-97  (app note added 2/06)
Picmicro® DeviceProgramming: What You Always Wanted to Know But Didn?T Know Who to Ask -  Microchip Application Note Published 23-Nov-05  (app note added 2/06)
PICmicro® Midrange MCU Code Hopping Decoder -  Microchip Application Note Published 15-Nov-97  (app note added 2/06)
PIC-Programmer 2 -  (electronic circuit added 4/05)
PIC-Tock Video Clock -  (electronic circuit added 4/05)
Picxie 2 8x8 Animated LED Signboard -  The firmware supplied in  current sourcecode archive is VERY BASIC. I do intend to draw more patterns. However, a vast workload coupled with possible emigration has put  finished firmware on hold. Please do go ahead and build this circuit though  supplied firmware is fully functional. You can have hours of fun designing your own patterns and effects!  Uses  PIC16F84.  (schematic / circuit added 10/02)
PID-Control with 68HC12 -  ….(design added 07/08/09)
Piecewise Linear Interpolation on PIC12/14/16 Series MicroControllers -  Microchip Application Note Published 21-Feb-05  (app note added 2/06)
PIN Diode Fundamentals -  MicroNote 701 from Microsem.....[App Note]
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Digital or Logic Circuits:  #'s    A     B     C     D     E - F     G - H
I - K     L     M - O     P     Q - R     S     T     U     V - Z

 


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