bad crystal?

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NeoRunner
 
Posts: 4
Joined: Mon Dec 05, 2005 2:20 pm

bad crystal?

Post by NeoRunner »

Hello,

I have recently started putting my minty together and encountered an error when checking the crystal frequency. Measuring from the input pin to the PIC I am reading 60 Hz on a scope. I have 20pF caps on each side (C11 and C12) respectively. The crystal according to digikeys site is 18pF, could this be causing my loss of freq by "stalling" the crystal?

Thanks,
NeoR

NeoRunner
 
Posts: 4
Joined: Mon Dec 05, 2005 2:20 pm

Update

Post by NeoRunner »

I did some more research, the 20pF should not affect the crystal and the crystal itself checks out ok. Any suggestions?

NeoRunner
 
Posts: 4
Joined: Mon Dec 05, 2005 2:20 pm

Update 2

Post by NeoRunner »

Well I found the 60hz, just a ground issue and flourescent lights. Unfortunately I'm still not seeing a signal from the osciliator. My next worry is that the configuration bits on the PIC. :( Comments, suggestions welcome.

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