Thread: Problem with 2008 gear tooth sensor
View Single Post
  #2   Spotlight this post!  
Unread 14-01-2008, 19:17
Tim Skloss's Avatar
Tim Skloss Tim Skloss is offline
Dr. Skloss
FRC #0930
Team Role: Parent
  
Join Date: Jan 2002
Rookie Year: 2000
Location: Waukesha, WI, USA
Posts: 73
Tim Skloss is a jewel in the roughTim Skloss is a jewel in the roughTim Skloss is a jewel in the roughTim Skloss is a jewel in the rough
Re: Problem with 2008 gear tooth sensor
We have the same problem! But the voltage is around 3.68 VDC and it varies as you bring metal objects up to the sensor.

Our other sensor worked great with a clean 0 to 5 VDC square waveform. This is our second one and it has not worked properly since wiring it up.

I took a lot of care wiring it up and can guarantee that it was not abused. From the Allegro data sheet I conclude that the sensor is not working properly. The output voltage from the sensor stays around 0.8 VDC above ground, and it should be higher according to the data sheet. IMHO the sensor is bad.

Where can we get replacement sensors BOARDS?!
__________________
---------------
FIRST Mentor and Team Leader
C.O.R.E 2062 a NASA, GE Volunteers and Rockwell Automation FRC Team
Reply With Quote