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Thread: Electronic pressure control

  1. #1
    Senior Member
    Join Date
    Apr 2005
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    1,176

    Electronic pressure control

    Gene Cafe Coffee Roaster $850 - Free Beans Free Freight
    Woo hoo! I just got my electronic pressure control idea tested and it works.

    Still a few things to sort out, but I turn a dial and the electronics changes the pressure. The first stop will be variable and adjustable pre-infusion (ie pressure and time) and adjustable brew pressure. Eventually I might look at pressure profiles as well.

    The good thing is no fancy pumps are required. These are all off-the-shelf components and relatively cheap (sourced from coffeeparts. Thanks Pedro).

    Cheers,

    Mark.

  2. #2
    Senior Member
    Join Date
    Dec 2004
    Posts
    485

    Re: Electronic pressure control

    Cmon Sparky, you cant leave it there.

    Tell us more, any photos or perhaps a description?

  3. #3
    Senior Member
    Join Date
    Apr 2005
    Posts
    1,176

    Re: Electronic pressure control


    Im keeping the lid on this one for now. Besides Ive only shown proof of principle, not a working device. Ive also modified the key component a bit, as it is not designed for what I want. For example Im using it backwards. Theres also an inbuilt hysteresis that Im trying to get rid of.

    I post more if I get it running more smoothly with the mods Ive made...

  4. #4
    Senior Member
    Join Date
    Dec 2004
    Posts
    485

    Re: Electronic pressure control

    Behmor Brazen - $249 - Free Freight
    Hmm is it a dust buster with a variac :)



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