The Weeder Frequency Counter using PIC16F84

This is a port by Peter Cousens to the PIC 16F84 of the  50Mhz Frequency counter kit {originally available} from Weeder Technologies . Since it uses a base PIC that is easily programmable, and provides a usefull bit of bench test equipment at very low cost, it makes an ideal PIC learning project. If you don't want to spend the time on the PCB, collecting the parts or even not programming the uP, you can ord ...

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HDD Clock – Persistence of Vision

1. Quite a few POV clocks out there, why is this special? Well, mainly because it's mine. There are quite a few POV clocks out there on the web using all sorts of display mechanisms, chassis, controllers. The one I decided to build isn't exactly one of them, the main difference being in the way I wanted to transfer energy to the spindle. This would add some originality to my project, sadly the method I chos ...

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TIMED DISCHARGE ADAPTER using PIC16F628

Introduction This program is an experimental timed-discharge adapter for a Vericom control panel used with an Orenco Systems AdvanTex® wastewater treatment system (sewage filtration system) marketed by Wastewater Technologies, Inc. Although the Vericom firmware is capable of modification to provide timed-discharge capability by a firmware download via telephone, this adapter was just an experiment to prove ...

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PIC based WWVB clock

Introduction There are many DIY versions of WWVB clock designs available on the web. Commercial "atomic" clocks are inexpensive and widely available, but I wanted to try my hand at designing one to gain insight into WWVB reception and to learn a little about programming a PIC microcontroller. My version is not the simplest available, but it works well and I think it offers a few unique features. WWVB Clock ...

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PIC12F675 timer0 code and Proteus simulation

This post provides the timer0 code for PIC12F675 microcontroller. This code is written in C language using MPLAB with HI-TECH C compiler. You can download this code from the 'Downloads' section at the bottom of this page. It is assumed that you know how to blink an LED with PIC12F675 microcontroller. If you don't then please read this page first, before proceeding with this article. The result of simulating ...

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PIC12F675 timer1 code and Proteus simulation

This post provides the timer1 code for PIC12F675 microcontroller. This code is written in C language using MPLAB with HI-TECH C compiler. You can download this code from the 'Downloads' section at the bottom of this page. It is assumed that you know how to blink an LED with PIC12F675 microcontroller. If you don't then please read this page first, before proceeding with this article. The result of simulating ...

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PIC16F877 timer0 code and Proteus simulation

This PIC16F877 microcontroller tutorial answers the question, " How to use timer0 of PIC16F877 and how to handle its interrupts? " Using PIC16 simulator (Proteus) you can verify this PIC timer0 code and change it according to your needs. This code is written in C language using MPLAB with HI-TECH C compiler. You can download this code from the 'Downloads' section at the bottom of this page. It is assumed th ...

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New Earth Time (NET) digital clock in recycled retro-modern case using PIC16F627A

Ever get confused by GMT, or just wish you had a cooler way to keep track of time?  Build a New Earth Time clock!  Using a PIC microcontroller, some code, and a couple discrete parts, you too can have a unique timekeeping device to keep on your desk. New Earth Time (NET) is an idea for a global time standard.  Like Greenwich Mean Time (GMT), it is the same "New Earth Time" everywhere on the globe at any ins ...

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00 to 99 minute timer using PIC16F628A microcontroller

Last week I was browsing my old backup hard drive and I found a source code for a very simple PIC based digital timer that I made a couple of years ago. The actual hardware of the project isn’t with me anymore. I might have lost it when I moved from my old apartment into my new home. However, I thought this might be a good practice project for beginners and so I am sharing it here. I am not going to build i ...

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2 Digit Counter using PIC12F629 Microcontroller

This article describes a 2-Digit Counter using a Microchip PIC12F629. It shows what can be done with an 8-pin chip having just 5 output lines and one input line. The chip drives two7-segment displays and this would normally require 7 lines to drive the segments plus another one or two lines to select the displays. We have shown how a single line can be used to drive two different segments by using the tri-s ...

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