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  1. #1
    Join Date
    Jul 2005
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    Default encoder

    O.K, will try it and see.

    Nigel

  2. #2
    G8RPI's Avatar
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    Default

    Hi,
    just a rider,
    I've been looking at the ALPS encoders and it would appear that they have a design feature that departs from the classic quadrature encoder.
    The contacts require a 10K pull-up to Vdd and go low when the shaft is rotated. Rather than maintain the low state, both outputs go open when the shaft is in the detent position. This reduces the power consumption by 500uA (0.5mA) when the encoder is idle, significant power in battery operated designs. This also gives the two pulse per click characteristic. There was nothing wrong with your code.

    Robert G8RPI.

  3. #3
    Join Date
    Jul 2005
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    Default encoder

    Thanks Robert, it sort of makes sense now and yes there is a position where it stays high, or low. They are a very reliable pot, we have used well over 6000 in our radios over the years with very little trouble.

    Cheers

    Nigel , VK4FNA

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