LongRangeLocators Forums  

Go Back   LongRangeLocators Forums > Main Forums > Long Range Locators

 
 
Thread Tools Display Modes
Prev Previous Post   Next Post Next
  #22  
Old 01-04-2011, 03:22 PM
J_Player's Avatar
J_Player J_Player is offline
Guru
 
Join Date: Feb 2006
Location: California
Posts: 4,382
Default

Quote:
Originally Posted by FrancoItaly
Hi J_Player

I don't know the AT89C2051 , I know very well the PIC 16F... series. Some PICs have 2 comparators and an internal programmable reference voltage, if it's the same for
the AT89C2051 it's possible that the processor controls if the voltage is out of a window voltage. Of course 2 externals comparator do the same job.

Best Regards
Hi FrancoItaly,
The AT89C2051 also has two internal comparators, one at each of the analogue inputs. The comparator uses bit 6 of port 3 (P3.6) for the comparator output result.
Because of this, P3.6 is not available for general purpose I/O.
Hmmmm.... I don't see port 3 connected to anything in the Mineoro circuit. There must be some coding in the AT89C2051 which extracts the gold signal.

Maybe one input is for fresh gold, and the other is for long-time buried gold.
Or maybe the AT89C2051 has a random number generator coded to make random beeps when it senses there is no signal is coming from the loop or ion chamber?

Best wishes,
J_P
Reply With Quote
 


Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


All times are GMT. The time now is 04:55 AM.


Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2024, vBulletin Solutions Inc.