USB powering adapter for smart irrigation system
thingiverse
If you are tired of replacing batteries to your irrigation system I designed this usb adapter for smart irrigation if you have nearby a power plug, or you can use solar panels for irrigation power supply. materials: the adapter to be printed a step-down converter like LM2596S module set to 3V output metal foil for contacts cut an old usb cable optional: i used a rubber gasket taken from a deutsch connector but maybe you can use a 4mm rubber band
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