Egy kis butykolessel: http://www.simpleiothings.com/10-diy-door-sensor/
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Hell is empty and all the devils are here.
-- Wm. Shakespeare, "The Tempest"
Egy kis butykolessel: http://www.simpleiothings.com/10-diy-door-sensor/
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Hell is empty and all the devils are here.
-- Wm. Shakespeare, "The Tempest"