Optical Encoder Question

Discussion in 'General Electronics Chat' started by danielb33, Nov 25, 2014.

  1. danielb33

    Thread Starter Member

    Aug 20, 2012
    105
    0
    I attached the encoders datasheet. I set the encoder up, and only use A, B, GND, and VCC (3.3V). I set up an MCU to interrupt during every rising edge to detect A & B signal changes. This works fine for 10 bit resolution.

    I do not understand what U, V and W pins are for though? Can anybody explain?
     
  2. ericgibbs

    AAC Fanatic!

    Jan 29, 2010
    2,503
    380
    hi,
    They are optional Commutation outputs, see this vid.

    E
     
    danielb33 likes this.
  3. MaxHeadRoom

    Expert

    Jul 18, 2013
    10,553
    2,375
    As Eric says, they are commutation pulses typically are used on BLDC motors, see relationship for alignment.
    Max.
     
    danielb33 likes this.
  4. danielb33

    Thread Starter Member

    Aug 20, 2012
    105
    0
    Perfect, thanks guys.
     
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