Sensor

Discussion in 'The Projects Forum' started by manofgresley, Nov 18, 2013.

  1. manofgresley

    Thread Starter New Member

    Sep 13, 2010
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    Hi

    My garage is very small, i would like to make it easier to park my car in it, i am thinking of a proximity switch, mounted on the garage door frame, so when the car drives tgrough the sensor, this makes the switch and illuminates a LED on the wall in front of the car, when the car clears the switch, the led goes out signalling the driver to stop, as to not hit the wall and to leave the minimum clearance behind the car to close it.

    Can anyone supply a circuit + list of parts?

    Many Thanks.

    Ray
     
  2. blueroomelectronics

    AAC Fanatic!

    Jul 22, 2007
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    Tennis ball & a string.
     
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  3. MaxHeadRoom

    Expert

    Jul 18, 2013
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    What voltage? (Just Ball-Park) :p
    Max.
     
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  4. Dodgydave

    Distinguished Member

    Jun 22, 2012
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    You can use an inductive proximity sensor to put your led on when the car gets near the sensor.
     
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  5. wayneh

    Expert

    Sep 9, 2010
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    I use one of these and the wife likes it just fine. Works great.
     
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  6. MikeML

    AAC Fanatic!

    Oct 2, 2009
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    Shine a light beam vertically downward so that it hits the windshield. The reflection that lands on the wall in front of the car moves upward as the car gets closer to the wall. Mark a scale showing where to stop...
     
  7. GopherT

    AAC Fanatic!

    Nov 23, 2012
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    I just made one using a PIC, some LEDs and an ultrasonic sensor.

    Park the car the first time and push the set button. Then the ultrasonic sensor measures and stores the distance in EEProm. The STOP sign slowly lights with 8 LEDs as the car approaches. It flashes if she is in too far. Lights go out if car is not moved for 30 seconds.

    Uses a PIC 16F628a
     
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  8. manofgresley

    Thread Starter New Member

    Sep 13, 2010
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    Hi Gopher,
    Can you supply circuit diagram ?

    Ray
     
  9. wayneh

    Expert

    Sep 9, 2010
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    That's the same idea as the commercial device I linked to above. As I said, it works great.
     
  10. ScottWang

    Moderator

    Aug 23, 2012
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    The Detection Distance: 4 mm
    Do you think the detection distance will too short?
    Or you have some other ways to expanding the detection distance?
     
  11. Alec_t

    AAC Fanatic!

    Sep 17, 2013
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    Just place a couple of bricks where the front wheels should stop. Ok, it's not so pretty as flashy LEDs etc :D.
     
  12. wayneh

    Expert

    Sep 9, 2010
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    Would a brick on the floor stop YOUR wife? :D
     
  13. Alec_t

    AAC Fanatic!

    Sep 17, 2013
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    Probably not. But she's only allowed to park in the yard!:)
     
  14. wayneh

    Expert

    Sep 9, 2010
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    Smart. My grandmother once put the car in the garage without bothering to open the garage door. :eek:
     
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