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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50 MHz frequency counter, voltage meter & SWR/PWR indicator using PIC16C71

Circuit schematic PCB HEX code, V1.11 (operates with 4,000 MHz quartz) Hex code, V1.12 (operates with 4,1943 MHz quartz) PIC config bits   Photo - Top view Photo - Bottom view Photo - Latest PCB version with TO-92 style 78L05 housing - Top view (132 kbyte) Photo - Latest PCB version with TO-92 style 78L05 housing - Bottom view (138 kbyte) This is a successor of the PIC16C71 4-digit LED f-counter & ...

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100MHz frequency counter with PIC16F628A – LCD Display

This project shows how to build a very simple yet very useful tool that every DIY enthusiast should have in his lab: a 100MHz+ frequency counter. The schematic is fairly simple and straightforward and uses a PIC16F628A microcontroller for measuring frequency and a high speed comparator for signal amplification and conditioning. The microcontroller uses its internal 4MHz oscillator for the CPU clock. Timer1 ...

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50MHz 7 segment frequency counter using PIC16F877A

In the same way as the LCD project this frequency counter circuit uses TMR1 in 16 bit counter mode to count the input signal edges. Counter overflows are accumulated to give the total count in multiples of 65536. Adding the current value of the counter at the end gives the total count. Specification of the frequency counter circuit Min frequency 1Hz Max frequency ~50MHz (limited by input pin characteristics ...

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Frequency Counter using PIC16F877A Microcontroller

A frequency counter is a useful addition to an engineer's toolbox and you can create the design described on this page for free. All you need is a PIC microcontroller (or any microcontroller that has a high speed timer input module) and a 2 line LCD display (the standard HD44780 one is the one used here). This PIC frequency counter project uses an LCD to display the frequency and PIC timer 1 to measure the ...

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2.5 GHz Frequency counter using PIC16F870

Background It is time to update the frequency counter again. A frequency counter is one of the most important measuring tool we need as homebrewers of RF electronic. This frequency counter has very high performance and still is very easy to build and to use. Anyone can build it and have fun. The counter is based around 6 LED displays which will present the frequency with 1kHz resolution. I don’t find it nec ...

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IK3OIL 16F84 PIC Frequency Counter Files

Caption (copied from the NorCal meeting listed in the links below): IK3OIL Frequency counter built by Wayne McFee.  This is from IK3OIL’s web site, and the cost of the counter was about $2, minus the display, which was about $7.  Wayne got the source was www.shopeio.com.  They are located in Gardenia, California. Design and Code by Francisco IK3OIL This frequency counter was mentioned on the QRP-L mailing l ...

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