Arduino 4 Channel Relay using ATmega328P with Proteus Simulation
Introduction This Arduino 4 Channel Relay project demonstrates how an ATmega328P-based Arduino can control multiple high-power devices using a relay interface.The system uses a ULN2003 driver IC to safely switch four 12V relays from low-voltage digital pins.Designed and tested using Proteus simulation, this project is ideal for learning relay interfacing, serial control, and embedded systems […]
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