rejuvened Frequencymeter from 2003

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rejuvened Frequencymeter from 2003

Postby CinziaG » Tue Nov 28, 2017 9:43 pm

frequenzimetro_lx1525.jpg
frequenzimetro_lx1525.jpg (146.87 KiB) Viewed 96 times


(code coming soon!)
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Re: rejuvened Frequencymeter from 2003

Postby CinziaG » Wed Nov 29, 2017 2:09 pm

Source attached.

Functions are:
Frequency measurement up to 500MHz, in 2 ranges (:1 and :10) and with/without prescaler;
Period measurement down to 0.1Hz and up to 1uS;
IF (intermediate frequency) add/subtract feature, from 1 to 99999999Hz.

Using a PIC16F1847.
Attachments
frequenz17.zip
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Re: rejuvened Frequencymeter from 2003

Postby CinziaG » Wed Nov 29, 2017 2:11 pm

LX1525_components.jpg
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Part list
All we are praying / is an earthquake in Chandler
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Re: rejuvened Frequencymeter from 2003

Postby CinziaG » Wed Nov 29, 2017 3:57 pm

ehm, prescaler update :)

Looks like Timer0 will reach 50MHz *only* if prescaler is set to at least 1:4. If disabled or set to 1:2, it does not go...
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frequenz17.c
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