View Single Post
  #50   Spotlight this post!  
Unread 17-01-2005, 11:49
Unsung FIRST Hero
Al Skierkiewicz Al Skierkiewicz is offline
Broadcast Eng/Chief Robot Inspector
AKA: Big Al WFFA 2005
FRC #0111 (WildStang)
Team Role: Engineer
 
Join Date: Jun 2001
Rookie Year: 1996
Location: Wheeling, IL
Posts: 10,798
Al Skierkiewicz has a reputation beyond reputeAl Skierkiewicz has a reputation beyond reputeAl Skierkiewicz has a reputation beyond reputeAl Skierkiewicz has a reputation beyond reputeAl Skierkiewicz has a reputation beyond reputeAl Skierkiewicz has a reputation beyond reputeAl Skierkiewicz has a reputation beyond reputeAl Skierkiewicz has a reputation beyond reputeAl Skierkiewicz has a reputation beyond reputeAl Skierkiewicz has a reputation beyond reputeAl Skierkiewicz has a reputation beyond repute
Re: Connecting the Hall Effect Sensor.

Quote:
Originally Posted by Gal Longin
I've been having abit of a problem connecting the hall effect sensors with the 4 pins. i looked at the file on http://www.allegromicro.com/datafile/0660.pdf and it said that one pin is for +v one is for GND and one is the output signal and the one left is also for GND . it seems a bit weird to me. perhaps i'm not understanding it correctly. why would you need two pins for GND. do you really have to connect both the 3rd and the 4th pin to the GND?

please help me figure this out. what is the correct way to connect it?
If you scan down from page one you will see a reference that Pin 3 is an internal connection, scan a little further and you will see that it "must" be tied to ground externally.
It may be an electrocstatic shield or it may be the shell of the magnetic structure. Four pins tied to a PCB are better than three.
__________________
Good Luck All. Learn something new, everyday!
Al
WB9UVJ
www.wildstang.org
________________________
Storming the Tower since 1996.