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PICList Project

The Weeder Frequency Counter PIC 16F84 port by Peter Cousens

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 order the kit (for a very resonable price) from http://www.weedtech.com

News: Weeder Tech no longer makes this kit. They have moved on to a very nice version that works with a local PC via the serial port for display and control. It is also "stackable" for multiple counters at once or with other modules for control and measurement of all kinds. See
http://www.weedtech.com for more information. The original kit has been licenced to Invent Electronics and Ken has made some improvements and provides a very nice (closed source) kit for $49 and a PCB for $10 (prices as of 2004/03/05)

The result is a nice frequency counter that reads frequency from 1 Hz to 50 MHz and displays it on a 16 character LCD display. Auto-range feature provides floating decimal point and automatic placement of suffix (Hz, KHz, or MHz). Gate speed automatically decreases to one second below 100 KHz to display frequency with a resolution down to an amazing 1 Hz.

You will need:

Also:

See also:

Comments:

Steve Brune says:

If you use the 16F84A for this project the software needs to be updated for bank switching to access the OPTION, TRISA and TRISB registers. The OPTION and TRIS commands compile with a warning in MPIDE but do not execute when burned in the 16F84A microcontroller.
+

Questions:


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