The project shows you how to build a RFID pet feeder based on Arduino and RDM630 RF-reader with a self-made circular antenna. The feeder will opens for the pet that wears a collar with an RFID tag. Project feature including : timer-controlled open duration, proximity sensor (Sharp GP2D120) prevents door from closing while the cat is eating, sensors detect whether the door is fully opened/closed, automatic/manual mode switch (on manual it opens with a pushbutton), sliding door using old CD-rom player.
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