Servo motor for a reflow controller

Discussion in 'Physics' started by electrophile, Mar 1, 2016.

  1. electrophile

    Thread Starter Member

    Aug 30, 2013
    100
    1
    This may seem like a very broad question but here goes. I'm trying to select a servo motor that pushes a reflow oven's door open to aid the cooling process. Can anybody help me understand how much torque would be needed to tip the door open.
     
  2. Alec_t

    AAC Fanatic!

    Sep 17, 2013
    5,813
    1,105
    My crystal ball has misted over.
    How heavy is the door? What dimensions? Top-hinged or side-hinged? Latching mechanism? Spring-loaded? Power supply?
     
  3. MaxHeadRoom

    Expert

    Jul 18, 2013
    10,571
    2,381
    You can measure it with a spring scale for e.g.
    If you want precise positioning for temp. control using a servo motor you would need feedback via PID loop.
    Depends how precise you need it.
    Max.
     
  4. electrophile

    Thread Starter Member

    Aug 30, 2013
    100
    1
    Ah well! Lets see... Door is about 12" x 7", bottom hinged (on the long edge), spring loaded. Power supply is a 5V 2A wall wart.

    Don't really need much precision actually. The servo just opens the door to cool the oven a little faster and once the temp reaches a certain point it releases and the 'ajar' door shuts back. The software monitors the temp and controls the servo. I'm wondering if I should just open the door manually to cool it :)
     
  5. MaxHeadRoom

    Expert

    Jul 18, 2013
    10,571
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    You could set up one or more positions using min. limit switches etc?
    Max.
     
  6. Dr.killjoy

    Well-Known Member

    Apr 28, 2013
    1,190
    156
    Look your making this harder then it need to be ...
    Check out these guys
    http://www.whizoo.com/
    They use a servo and program controls how far, where to start and end..
     
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