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4x4 Keypad — Parallax Forums

4x4 Keypad

jayzdabossjayzdaboss Posts: 18
edited 2012-01-22 05:57 in Robotics
I need help programming my keypad.

Comments

  • LeonLeon Posts: 7,620
    edited 2012-01-21 10:52
    What is it connected to?
  • Duane DegnDuane Degn Posts: 10,588
    edited 2012-01-21 10:52
    What keypad? With what controller? What have you tried so far?
  • jayzdabossjayzdaboss Posts: 18
    edited 2012-01-21 11:18
    Basic stamp
  • jayzdabossjayzdaboss Posts: 18
    edited 2012-01-21 11:20
    Haven't tried anything cuz I have no idea how I'm suppose to get it to work I'm just getting started
  • Martin_HMartin_H Posts: 4,051
    edited 2012-01-21 18:49
    If this is the Parallax membrane keypad the product pages has a pdf which shows how to use it. But a summary would be that you put 1k resistors on the column leads and hook them to i/o pins. You then hook the row leads up to i/o pins. From there you put the column pins into output and then row pins into input. Sweep through the columns and read the rows.
  • jayzdabossjayzdaboss Posts: 18
    edited 2012-01-22 05:57
    Martin_H wrote: »
    If this is the Parallax membrane keypad the product pages has a pdf which shows how to use it. But a summary would be that you put 1k resistors on the column leads and hook them to i/o pins. You then hook the row leads up to i/o pins. From there you put the column pins into output and then row pins into input. Sweep through the columns and read the rows.
    Thanks that was great help.
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