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rejuvened Frequencymeter from 2003

PostPosted: Tue Nov 28, 2017 9:43 pm
by DarioG
frequenzimetro_lx1525.jpg
frequenzimetro_lx1525.jpg (146.87 KiB) Viewed 208668 times


(code coming soon!)

Re: rejuvened Frequencymeter from 2003

PostPosted: Wed Nov 29, 2017 2:09 pm
by DarioG
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.

Re: rejuvened Frequencymeter from 2003

PostPosted: Wed Nov 29, 2017 2:11 pm
by DarioG
LX1525_components.jpg
LX1525_components.jpg (76.06 KiB) Viewed 208655 times


Part list

Re: rejuvened Frequencymeter from 2003

PostPosted: Wed Nov 29, 2017 3:57 pm
by DarioG
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...