DIY Food Stirrer for automatic feeder

Discussion in 'Do It Yourself (DIY)' started by adhd_nerd, Mar 6, 2018.

  1. adhd_nerd

    adhd_nerd Active Member Partner Member 2018

    Joined:
    Feb 23, 2012
    Messages:
    242
    Likes Received:
    91
    Location:
    Kansas City
    I needed a liquid food stirrer for an automatic feeder I am working on. This stirrer will be inside a fridge/cooler. Most of what I have seen out there are magnetic stirrers; which in my experience has not worked exceptionally well for thicker liquid food with larger food particles.

    The design of this stirrer is to slowly turn the container vs turning the "mixer blade." The mixer blade will be fixed. I also wanted the stirrer shaft to function as the tube to extract the food with the dosing pump (Neptune DoS or GHL Max). So shaft cannot turn. I think this will only work for thicker liquid food with less water. In the video below the blade turns, because I have not glued blade to acrylic tubing.

    The motor is a high torque, low RPM (30) gear-head motor (choose 12VDC or 24VDC). You can find these on Amazon for about $16.00. You will also need a power supply. If you are using 1Link module, you can power from the accessory port (24VDC). I will be "triggering" these with the output from the GHL stirrer ports. I would not connect directly to stirrer ports since I do not know how much current stirrer ports will support. I will post the circuit I plan on using later to trigger these stirrers.

    All the different plastic pieces are 3D printed.
    (1) Gear head motor
    (2) 12/24VDC power supply
    (3) 16Oz. Condiment container
    (4) 3/8" OD acrylic tubing for stirrer blade
    (5) Female DC power plug
    IMG_20180304_115915.jpg IMG_20180304_120012.jpg IMG_20180304_120058.jpg IMG_20180306_213157.jpg IMG_20180306_213505.jpg
    IMG_20180306_213328.jpg
     
    MaddyP and Brew12 like this.
    Tags:

  2. Brew12

    Brew12 Electrical Gru R2R Supporter R2R Excellence Award Reef Squad Leader Article Contributor Build Thread Contributor Partner Member 2018

    Joined:
    Aug 14, 2016
    Messages:
    11,705
    Likes Received:
    17,938
    Location:
    Decatur, AL
    Very cool!

    I really need to get a 3D printer.... no idea why I need to.. but I do!
     
  3. Jomama

    Jomama Marine fish monthly R2R Supporter SCMAS Member

    Joined:
    Nov 8, 2017
    Messages:
    958
    Likes Received:
    797
    Location:
    Fullerton, California
    I second that
     
  4. adhd_nerd

    adhd_nerd Active Member Partner Member 2018

    Joined:
    Feb 23, 2012
    Messages:
    242
    Likes Received:
    91
    Location:
    Kansas City
    Continuation...received my GHL Maxi today. So trying to finish out some components of the auto feeder.

    The trigger circuit is really basic, but works. The NPN transistor acts as a voltage controlled switch.

    basic_npn_switch.PNG
    I put two ports into a box to match up with the stirrer outputs
    available.

    IMG_20180308_190655.jpg

     
    Jomama likes this.
Draft saved Draft deleted

Share This Page

  1. This site uses cookies to help personalise content, tailor your experience and to keep you logged in if you register.
    By continuing to use this site, you are consenting to our use of cookies.
    Dismiss Notice
Loading...