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Isaac

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Posts posted by Isaac

  1. the skimmer cleaner project got a JOLT (*cough*) of energy yesterday (thank you @FarmerTy).  I now have a dead vertex skimmer head, which im gonna take the arm from!

    ordered:
    gears! http://amzn.to/2fdkcwj
    belt! http://amzn.to/2felt6e

    The skimmer top will have the larger gear, which is attached to the arm.  the motor above will be mounted to the side (i need to 3dprint the mount).   This design shoooould work, and the added bonus of not having the design flaw of moisture getting in the motor and ruining it (just silly vertex, so silly)

    • Sad 1
  2. YAIR (yet another isaac rant)

    why are algae scrubbers so expensive?

    2x LED panels.. $25-50 each
    small tall acrylic or glass tank... maybe $50
    some plumbing... $10?
    plastic screen... like 10 cents

    I could see these for like 100-150... but 3-500? come on.

  3. code i have so far...

    /*
     Stepper Motor Control - one rev back and forth
     This program is for the SparkFun Easy motor driver board.
     This program drives a bipolar stepper motor.
     The motor is attached to ground plus digital pins 8 and 9 of the Arduino.
     The motor should revolve one revolution in one direction, then
     one revolution in the other direction at a speed determined by 
     the milliseconds in the microSecDelay variable.
     Created by Bill Harper, Feb. 10 2014
     */
    #include <Stepper.h>
    int oneway;                      // counter for steps
    int onerev = 6400;               // number of steps each direction (edit this 
                                     //   for your particular motor) org 6400
    int milsec = 250;                // 1 sec = 1000 ms   
                                     // delay between steps and speed of the motor 
                                     //   (about as fast as the system can react,
                                     //   higher number = slower)
                                     
    int dirPin = 8;                  // output pin for stepper motor direction
    int stepPin = 9;                 // output pin for the pin used to step the motor
    void setup() {                
      pinMode(dirPin, OUTPUT);       // Assign output mode to pin for direction
      pinMode(stepPin, OUTPUT);      // Assign output mode to pin for setp
      digitalWrite(dirPin, LOW);     // Initialize dir pin 
      digitalWrite(stepPin, LOW);    // Initialize step pin
      oneway = 1;
    }
    void loop() {
      if (oneway < onerev + 1)            // Still in first revolution?
        {
          digitalWrite(dirPin, LOW);      // Keep direction pin low
        }
      else
        {
          digitalWrite(dirPin, HIGH);    // If not in first revolution change 
                                         //   direction pin to High
        }
      digitalWrite(stepPin, HIGH);       // Step motor
      //delayMicroseconds(microSecDelay);  // Wait microseconds
      delay(milsec);
      digitalWrite(stepPin, LOW);        // Step motor
      //delayMicroseconds(microSecDelay);  // Wait microseconds
      delay(milsec);
      oneway += 1;                       // Increment direction counter
      if (oneway > onerev * 2)           // If we have exceeded two revolutions
        { oneway = 1; }                  // Reset counter to start over again
      
    }                                    // EOF

     

  4. so i've decided to try and make a skimmer neck cleaner.  what i have so far:

    stepper motor http://amzn.to/2vU9OjH
    stepper motor driver http://amzn.to/2vTQraI
    arduino to control driver http://amzn.to/2vTuKr9

    If I can get this combo to go in one revolution every hour or two, the plan is to 3d print a shaft and mount some squeegees on it, the run a belt between the stepper motor and the shaft.  I cant mount the motor directly ontop, as i have a clearance issue (ugh).  will post picts once i have something!

    • Like 1
  5. Just now, Dogfish said:

    Mine are std Male / Male . They should work  if less than 15' ?

    yup.. longer you get, more chance of interference tho.  try and keep them away from 120v power cords.   just like in home theater world... one side of the cabinet AC, one side DC/video.

  6. 2 minutes ago, Dogfish said:

    Thanks,

    Another question. I have a bunch of USB 2.0 cables. Can I use them for the the Aqua Bus on my Neptune Systems or do I need their over priced cables that are 2 long or 2 short?

    those are standard male/male cables.  check monoprice/amazon.  alternatively, you can get a gender changer and use an old one. 

  7. So, i couldnt find any 19v regulated power supplies... but I did find this combo that would work. 

    Math:  [email protected] = 89.3watts x4 = 357   ( http://www.rapidtables.com/calc/electric/Amp_to_Watt_Calculator.htm )

    Items:
    2x http://amzn.com/B019OOTL7A   24vDC 8A (200w) $17.99
    4x http://amzn.com/B01H97ETVM  24v to 19v stepdown regulator (95w) $16.99
    grand total for all 4: $103.94

    Then compare it to just having backup bricks:  http://amzn.com/B01KLLSNJ2  $13.66  or $54.64 for 4.

    so, for high output 19v, its actually better to stick w/ the bricks, since backups are cheap and quick to get.  any 90+w 19v laptop power supply will work!  hell, discount electronics!  maybe your power supply holding box just needs a fan or two?

     

  8. I'd recommend upgrading your power supplies.  these "bricks" are prone to overheating, and are overpriced.  look for something like this:  http://amzn.to/2eE8Dht  they come in differing voltages and wattage ratings.  I run 5 AI Sol's w/ one of these, and cheap enough to have a spare just sitting there waiting.  The original sol bricks got so hot they started melting, if they didnt just quit first.

    • Thanks 1
  9. my biocube's dinos finally went away after adding more fish and feeding more.  i think the trick is to out-compete the crap. what crap? 

    Quote

    It kills off any single celled organism (including algae, bacteria etc) and most if not all people who dosed it in their tanks saw their dinos go away for good. Also, with very little ill effects.

    now, its obviously not a cure-all, because just peroxide alone didnt help me.

  10. i had that problem last year, when i refilled my media, i upped the ratio.  3 scoops coarse arm, one scoop neomag.  This ratio is well above what the bag says, but its seems to be perfect since.  you can see layers in my reactor since i didnt really mix it in,

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