To go one step further, i decided to try and automate at least part of my hydroponic system, with the help of an Arduino board and a few other things..


  • Low Cost (well , as much as possible)
  • Reliable (I am not home much, and my flat is small, oh and i am quite paranoid about security as well)
  • Low Power (this ties in with #1 and #2) : i really am not confident enough in my skills to do precision work and tinkering with 220v machines, so this was a necessity, plus, less power->less stress when the electricity bill arrives)
  • Adjustable


  • For the electronics part, i went with an Arduino, which is an absolutely fabulous open source hardware :
    for more info check out their site I ordered a starter kit from (which was very good save for the absolutely outrageous french taxes that got added to it on arrival)
  • I bought a few 6-12 V cheap water pumps on ebay (about 8 $) : to my surprise these actually delivered more punch than a 240l/h 220V pump
  • A few additional electronics components :
    • Tip120 Transistors (beware though, check out the actual amperage of your pumps first! on my first 12V test , the tip120 actually started to overheat and emit smoke!)
    • A few diodes
    • Resitors, leds etc

How it went:

  • To my surprise,  when i first tried the pump on a molex 5v supply, it alreay was powerfull enough to pump the water up by 40cm into 4 of the containters
  • If you want to use these pumps at full power (12v) CHECK the actual resistance /amperage first ! Otherwise you might fry your tip120 transistor (i almost did, the smoking was a good tip though 🙂

Stay Tuned for more!

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4 thoughts on “Homemade Hydroponics-HydroDuino(1) Automation with Arduino

  • May 25, 2011 at 15:51

    Will you open source your arduino code?

    • June 17, 2011 at 00:55

      Hello Dave!

      Yes the plan is still to release Hydroduino as an open source project 🙂

  • September 20, 2011 at 00:51

    How is the project going? I am about to start one myself for a computer science course I am in right now (Making Interactive Gadgets).


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