Go to Post We are customers to FIRST. In that comes expectations. I don't want to hear another, "You should be grateful for everything FIRST does" nonsense when FIRST royally screws up. - MikeDubreuil [more]
Home
Go Back   Chief Delphi > Technical > Programming
CD-Media   CD-Spy  
portal register members calendar search Today's Posts Mark Forums Read FAQ rules

 
Closed Thread
Thread Tools Rating: Thread Rating: 2 votes, 5.00 average. Display Modes
  #1   Spotlight this post!  
Unread 01-04-2014, 00:10
Alfredp832 Alfredp832 is offline
WINT 3794
FRC #3794 (Wint)
Team Role: Programmer
 
Join Date: Mar 2014
Rookie Year: 2013
Location: México
Posts: 5
Alfredp832 is an unknown quantity at this point
Sensor doubt!

Hello! last week we were talking about sensor and their aplications so we were thinking on using a magnetic sensor for a team project, the question is FIRST allow us to use them? and if its allowed, does Labview can program it?
  #2   Spotlight this post!  
Unread 01-04-2014, 00:11
connor.worley's Avatar
connor.worley connor.worley is offline
Registered User
FRC #0973 (Greybots)
Team Role: Mentor
 
Join Date: Mar 2011
Rookie Year: 2010
Location: Berkeley/San Diego
Posts: 601
connor.worley has a reputation beyond reputeconnor.worley has a reputation beyond reputeconnor.worley has a reputation beyond reputeconnor.worley has a reputation beyond reputeconnor.worley has a reputation beyond reputeconnor.worley has a reputation beyond reputeconnor.worley has a reputation beyond reputeconnor.worley has a reputation beyond reputeconnor.worley has a reputation beyond reputeconnor.worley has a reputation beyond reputeconnor.worley has a reputation beyond repute
Re: Sensor doubt!

Depends on the specs of the sensor. Link?
__________________
Team 973 (2016-???)
Team 5499 (2015-2016)
Team 254 (2014-2015)

Team 1538 (2011-2014)
2014 Driver (25W 17L 1T)
日本語でOK
  #3   Spotlight this post!  
Unread 01-04-2014, 00:12
MrTechCenter's Avatar
MrTechCenter MrTechCenter is offline
INTENSITY
AKA: Harsharan "Harsh" Dhaliwal
FRC #2073 (Eagleforce)
Team Role: Mentor
 
Join Date: Sep 2011
Rookie Year: 2010
Location: Sacramento, CA
Posts: 559
MrTechCenter has a brilliant futureMrTechCenter has a brilliant futureMrTechCenter has a brilliant futureMrTechCenter has a brilliant futureMrTechCenter has a brilliant futureMrTechCenter has a brilliant futureMrTechCenter has a brilliant futureMrTechCenter has a brilliant futureMrTechCenter has a brilliant futureMrTechCenter has a brilliant futureMrTechCenter has a brilliant future
Re: Sensor doubt!

What kind of a magnet sensor? Like the kind you use on a magnetic piston?
__________________
2011 Sacramento Regional Finalists; 2011 MadTown Throwdown VIP Excellence in Engineering Award; 2012 Sacramento Regional Innovation in Control Award; 2012 Silicon Valley Regional Judges' Award; 2012 CalGames Autonomous Challenge Award; 2012 MadTown Throwdown Finalists; 2013 P0W3RH0U53 PWNAGE Gracios Professionalism Award; 2014 Central Valley Regional Innovation in Control; 2014 Sacramento Regional Innovation in Control; 2014 Curie Division Gracious Professionalism Award; 2015 Sacramento Regional Innovation in Control
  #4   Spotlight this post!  
Unread 01-04-2014, 07:46
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: Sensor doubt!

There currently is no specific rule against sensors provided they fit the other rules. For instance, you may not use a 110 vac sensor on the robot. You may even use a laser operated device provided the laser is contained and sealed such as a laser gyro or accelerometer.
__________________
Good Luck All. Learn something new, everyday!
Al
WB9UVJ
www.wildstang.org
________________________
Storming the Tower since 1996.
  #5   Spotlight this post!  
Unread 01-04-2014, 09:00
Danny Diaz's Avatar
Danny Diaz Danny Diaz is offline
Smooth Operator
AKA: FrankenMentor
None #0418
Team Role: Alumni
 
Join Date: Apr 2005
Rookie Year: 2003
Location: Manchester, NH
Posts: 545
Danny Diaz has a reputation beyond reputeDanny Diaz has a reputation beyond reputeDanny Diaz has a reputation beyond reputeDanny Diaz has a reputation beyond reputeDanny Diaz has a reputation beyond reputeDanny Diaz has a reputation beyond reputeDanny Diaz has a reputation beyond reputeDanny Diaz has a reputation beyond reputeDanny Diaz has a reputation beyond reputeDanny Diaz has a reputation beyond reputeDanny Diaz has a reputation beyond repute
Send a message via AIM to Danny Diaz
Re: Sensor doubt!

Quote:
Originally Posted by Alfredp832 View Post
Hello! last week we were talking about sensor and their aplications so we were thinking on using a magnetic sensor for a team project, the question is FIRST allow us to use them? and if its allowed, does Labview can program it?
418 has several magnetic sensors on our robot this year, we use them for detecting position. For example we have an impact plate on our shooter, and on the back of the impact plate we have several magnets; the magnets trigger a reed switch mounted on our robot and they tell the robot when the impact plate has reached its maximum pullback position.

The magnetic sensor acts just like any digital microswitch would, when the magnet gets near it the sensor closes the circuit and changes value. LabVIEW reads the DIO line just fine.

-Danny
__________________
Danny Diaz
Former Lead Technical Mentor, FRC 418

Last edited by Danny Diaz : 01-04-2014 at 09:03.
  #6   Spotlight this post!  
Unread 01-04-2014, 11:54
Mulcahy's Avatar
Mulcahy Mulcahy is offline
Registered User
FRC #0987 (High Rollers)
Team Role: Mentor
 
Join Date: Apr 2012
Rookie Year: 2009
Location: Fabulous Las Vegas
Posts: 31
Mulcahy is on a distinguished road
Re: Sensor doubt!

Why not use a PNP inductive sensor? It works like a magnet/reed switch without the danger of accidentally being triggered by a collision. It can be wired directly to the DSC.
  #7   Spotlight this post!  
Unread 01-04-2014, 13:11
Alan Anderson's Avatar
Alan Anderson Alan Anderson is offline
Software Architect
FRC #0045 (TechnoKats)
Team Role: Mentor
 
Join Date: Feb 2004
Rookie Year: 2004
Location: Kokomo, Indiana
Posts: 9,113
Alan Anderson has a reputation beyond reputeAlan Anderson has a reputation beyond reputeAlan Anderson has a reputation beyond reputeAlan Anderson has a reputation beyond reputeAlan Anderson has a reputation beyond reputeAlan Anderson has a reputation beyond reputeAlan Anderson has a reputation beyond reputeAlan Anderson has a reputation beyond reputeAlan Anderson has a reputation beyond reputeAlan Anderson has a reputation beyond reputeAlan Anderson has a reputation beyond repute
Re: Sensor doubt!

Quote:
Originally Posted by Mulcahy View Post
Why not use a PNP inductive sensor? It works like a magnet/reed switch without the danger of accidentally being triggered by a collision. It can be wired directly to the DSC.
How would you wire a PNP sensor to the Digital Sidecar?
  #8   Spotlight this post!  
Unread 01-04-2014, 13:24
Pratik Kunapuli's Avatar
Pratik Kunapuli Pratik Kunapuli is offline
Probably browning-out on Astro-Turf
FRC #1648 (G3 Robotics)(EWCP)
Team Role: Mentor
 
Join Date: Jan 2013
Rookie Year: 2012
Location: Atlanta, GA
Posts: 143
Pratik Kunapuli is a name known to allPratik Kunapuli is a name known to allPratik Kunapuli is a name known to allPratik Kunapuli is a name known to allPratik Kunapuli is a name known to allPratik Kunapuli is a name known to all
Re: Sensor doubt!

Quote:
Originally Posted by Danny Diaz View Post
418 has several magnetic sensors on our robot this year, we use them for detecting position. For example we have an impact plate on our shooter, and on the back of the impact plate we have several magnets; the magnets trigger a reed switch mounted on our robot and they tell the robot when the impact plate has reached its maximum pullback position.

The magnetic sensor acts just like any digital microswitch would, when the magnet gets near it the sensor closes the circuit and changes value. LabVIEW reads the DIO line just fine.

-Danny
We use the Hall Effect Sensors from WCP [link] on our Catapult to detect the loaded position. It is plugged into the Digital IO on the Digital Side card and Java just reads it as a digital input.
__________________
Official Driving Record: 101-59-0
2012-2015 Student 341 Miss Daisy
2015-Current Mentor 1648 G3 Robotics
  #9   Spotlight this post!  
Unread 03-04-2014, 23:11
Alfredp832 Alfredp832 is offline
WINT 3794
FRC #3794 (Wint)
Team Role: Programmer
 
Join Date: Mar 2014
Rookie Year: 2013
Location: México
Posts: 5
Alfredp832 is an unknown quantity at this point
Re: Sensor doubt!

The sensor is like the one used in an AGV that follows magnetic tape but i dont know if just with a DIO i can do it
  #10   Spotlight this post!  
Unread 04-04-2014, 02:00
Danny Diaz's Avatar
Danny Diaz Danny Diaz is offline
Smooth Operator
AKA: FrankenMentor
None #0418
Team Role: Alumni
 
Join Date: Apr 2005
Rookie Year: 2003
Location: Manchester, NH
Posts: 545
Danny Diaz has a reputation beyond reputeDanny Diaz has a reputation beyond reputeDanny Diaz has a reputation beyond reputeDanny Diaz has a reputation beyond reputeDanny Diaz has a reputation beyond reputeDanny Diaz has a reputation beyond reputeDanny Diaz has a reputation beyond reputeDanny Diaz has a reputation beyond reputeDanny Diaz has a reputation beyond reputeDanny Diaz has a reputation beyond reputeDanny Diaz has a reputation beyond repute
Send a message via AIM to Danny Diaz
Re: Sensor doubt!

Quote:
Originally Posted by Alfredp832 View Post
The sensor is like the one used in an AGV that follows magnetic tape but i dont know if just with a DIO i can do it
Ok, so here's my general debugging guidelines when it comes to "strange" sensors:

(1) Can the device be powered using 5V or 12V? If so, it can be directly powered by one of the Digital or Analog input banks (5V) or it can be powered by a branch off the Power Distribution Board (12V). If not, you've got to figure out how to power it otherwise (if less than 12V but more than 5V, consider a voltage divider off a 12V PDB branch. If less than 5V, consider a voltage divider off the 5V DIO or Analog sensor lines (if using a DIO or analog input - see later)). If more than 12V, it's likely not going to be supported.

(2) When you power the device up, what voltages do you see on the signal line of the device (when compared to the common line of the power supply you're using)? If it's 5V or less, and is more-or-less a binary value (you see more than 3V when one condition is met - seeing or not seeing the magnetic tape - and less than 3V when the other condition is met) then you can use it on the DIO.

There ya go, in a nutshell.

-Danny
__________________
Danny Diaz
Former Lead Technical Mentor, FRC 418
  #11   Spotlight this post!  
Unread 04-04-2014, 21:21
DonRotolo's Avatar
DonRotolo DonRotolo is offline
Back to humble
FRC #0832
Team Role: Mentor
 
Join Date: Jan 2005
Rookie Year: 2005
Location: Atlanta GA
Posts: 7,019
DonRotolo has a reputation beyond reputeDonRotolo has a reputation beyond reputeDonRotolo has a reputation beyond reputeDonRotolo has a reputation beyond reputeDonRotolo has a reputation beyond reputeDonRotolo has a reputation beyond reputeDonRotolo has a reputation beyond reputeDonRotolo has a reputation beyond reputeDonRotolo has a reputation beyond reputeDonRotolo has a reputation beyond reputeDonRotolo has a reputation beyond repute
Re: Sensor doubt!

Like Danny said: If you can power it, it is very likely you can get the information from it.

I cannot imagine any real sensor that Labview would really be unable to use.
__________________

I am N2IRZ - What's your callsign?
Closed Thread


Thread Tools
Display Modes Rate This Thread
Rate This Thread:

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

vB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Forum Jump


All times are GMT -5. The time now is 02:42.

The Chief Delphi Forums are sponsored by Innovation First International, Inc.


Powered by vBulletin® Version 3.6.4
Copyright ©2000 - 2017, Jelsoft Enterprises Ltd.
Copyright © Chief Delphi