Arduino Flush-Less

Thwarting humanity by hacking your naughty bits depository.

Similar projects worth following
Thwarting humanity by hacking your naughty bits depository.

6,500 mL for just 400 mL?
Nature should rape you back for that.
What if with out changing much, we found a solution?
Good, then I don't have to finish this project.

With the Arduino Flush-Less easily slid in to place, your standard toilet now has options. After each flush, it fills to the minimum, saving HALF as much water commonly used for flushing just urine. An average person uses a toilet per day twice for peeing and once for poo-peeing. Saving half as much water twice a day can equal almost 2 gallons a day. If you need to go deuce, press 2 (or Deuce on your smart phone) and the toilet fills to the nominal maximum level. Press F (or Flush on your smart phone) when you are done dropping the kids off at the pool. With JUST a mere 1,825 hackers using the AFL, we could save 1,000,000 GALLONS of water a year WITH OUT replacing a single toilet.


  • 1 × Arduino Micro
  • 2 × Micro Servo
  • 1 × 1/4" Electric Plastic Water Solenoid Valve 12V
  • 1 × Acrylic
  • 1 × HC-06 BT Adapter

View all 19 components

  • 234/074

    Vije Miller08/22/2014 at 18:18 0 comments

    Noting some future amendments...

    1. 3D printed sealed case for electronics and servos

    2. 3D printed servo arms for greater variations

    3. Display showing flush counts, mL used, etc

    4. WiFi data flush counts, mL used, saved, etc

    5. Potentiometers to adjust fill time variants

    6. Racing stripe

  • 219/074

    Vije Miller08/07/2014 at 00:27 0 comments

  • 218/074

    Vije Miller08/06/2014 at 18:27 0 comments


    Video is being edited.

    Code is being posted.

    It's your duty (ha, duty) to save water.

    Stay tuned for the rest...

  • 217/074

    Vije Miller08/05/2014 at 18:25 0 comments

    Testing complete, Oddly enough, success.

    Housing and water proofing box.

    FINAL timing tests today and tomorrow.

    Anticipate filming tomorrow.

  • 216/074

    Vije Miller08/04/2014 at 18:32 0 comments

    Sketch testing...tested (Success?)

    1/4 value mounting build

    Relay circuit build

    BT tested and holy crap that makes it's stupidly cool

    Video production began, shameless clevage seems appropriate

  • 214/074

    Vije Miller08/01/2014 at 23:17 0 comments

    Built cap/sensor button array with LED alert

    Re-enforced AFL frame

    Test buttons

    Case construction

  • 213/074

    Vije Miller08/01/2014 at 00:21 0 comments

    Formed acrylic adjustable hangers.

    Wiring buttons and LED

    Programming BT portion of sketch

    New placement for solenoid build designed

  • 212/074

    Vije Miller07/31/2014 at 00:30 0 comments

    Cut and drilled support strip of acrylic 1" x 8"

    Cut and drilled (2) 1.25" x 5" acrylic supports

    Mounting servos

    Water valve arrives tomorrow, will need brass barbed inlets

    0.75 Coke~Cola consumed

View all 8 project logs

  • 1
    Step 1

    Do, every thing, I say...then ignore it all and realize it could be done more efficiently with exceptional technology this yokel doesn't have access to. Pfft, what a dope. Hey! I'm just doing my best. Calm down, putz. Hey! Shh, just accept it. Fine, but I serio-- No, you don't have any authority here. Now listen to me...

View all instructions

Enjoy this project?



geoffrey wrote 02/04/2016 at 13:22 point


  Are you sure? yes | no

geoffrey wrote 02/04/2016 at 13:22 point

hello i really your projet, i wanted to know if there is a full tutorial for it ? i'm french and i work for a school projet about toilet flush-less, 

  Are you sure? yes | no

MrBishop wrote 11/02/2014 at 08:04 point
Super neat, I'd love to build one any information you'd be willing to share would be appreciated.

  Are you sure? yes | no

Adam Fabio wrote 07/31/2014 at 06:06 point
I have no idea what you're doing, But it involves naughty bits, saving the planet, and R/C Servos. That's good enough for me! Followed. :)

  Are you sure? yes | no

Similar Projects

Does this project spark your interest?

Become a member to follow this project and never miss any updates