Radio-orienteering – modifying fox hunting PIC asm – yo5at

I am going to modify a radio-orienteering (fox hunting) PIC asm (written by yo5ooe) code to fit the new IARU rules for the new type of fox hunting contest.

The current rule is:
The foxes are on a 5 minutes cycle. Fox 1 will transmit “MOE” in CW for one minute and then Fox 2 will transmit “MOI” for one minute and then Fox 3 will transmit “MOS” for one minute and then Fox 4 will transmit “MOH” for one minute and then Fox 5 will transmit “MO5″ for one minute.

The new rule is:
The foxes are on a 1 minutes cycle. Fox 1 will transmit “MOE” in CW for 12 seconds and then Fox 2 will transmit “MOI” for 12 seconds and then Fox 3 will transmit “MOS” for 12 seconds and then Fox 4 will transmit “MOH” for 12 seconds and then Fox 5 will transmit “MO5″ for 12 seconds.

ARDF “fox hunting” start control clock

This project was ordered by yo5kop radio club.
They needed this device to control the ham radio fox hunting contests. Mainly it’s a start clock which periodically attempt the participants to prepare for contest and finally give them the sign to start the contest.

This is the device photo:
Fox hunting device

PIC tachometer up to 9999 RPM

Another early project of mine I build for yo5bhg.
It’s a simple tachometer with PIC microcontroller which can count up to 9999 RPM.

This is the code in the main.asm files (other files will be added when I have time to rewrite the comment to English).

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DCF-77 radio clock with PIC microcontroller

In 2001 I started to learn PIC microcontrollers and Microchip PIC assemble language.

The project was ordered by yo5oee for our city’s Administrative Palace.

This was my first project related to PIC microcontrollers and it wasn’t so easy.
I’d used a DCF-77 radio controlled clock chip which made date and time synchronization every night. The picmicro was PIC16F877.

This is the DC-77 module schematics:
DCF-77 radio clock

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