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  • Automatic Plant Watering System with Arduino

    A very simple approach is to use a light timer to run a submersible aquarium pump to pump the water to the plants. Make sure the plants have a very drainable mixture of vermiculite in the soil so that the roots don't ever become waterlogged. Select an appropriate drip head (or a loop of copper with tiny holes ringing the plant) and set the time accordingly. If you go with 100% vermiculite, or a simple pvc pipe with the plant suspended you have hydroponics for cheaper than buying the electronics needed to "sense" the moisture. I've grown lots of plants very successfully doing this on the cheap.The only trick is to eliminate/reduce the soil that becomes water-ladden when the pump is on too long. Roots only have to "dry out" for a few hours to remain healthy and drainin...see more »A very simple approach is to use a light timer to run a submersible aquarium pump to pump the water to the plants. Make sure the plants have a very drainable mixture of vermiculite in the soil so that the roots don't ever become waterlogged. Select an appropriate drip head (or a loop of copper with tiny holes ringing the plant) and set the time accordingly. If you go with 100% vermiculite, or a simple pvc pipe with the plant suspended you have hydroponics for cheaper than buying the electronics needed to "sense" the moisture. I've grown lots of plants very successfully doing this on the cheap.The only trick is to eliminate/reduce the soil that becomes water-ladden when the pump is on too long. Roots only have to "dry out" for a few hours to remain healthy and draining through vermiculite (stone) is pretty quick.I admit that using a cheap light timer is not as much fun as programming and setting up an Arduino.

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  • domoking3 commented on mikeasaurus's instructable No-wrinkle Button Seam4 months ago