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your image shows a diode/resistor connected between the relay and Arduino on the breadboard, but you have not mentioned about it in the article nor in the supply list. So just asking, what is it and do we need it?
nice project. will like to try it. can we use the relay as a regular switch. i mean here you are using it with 12 volts DC power supply and motor, what if i want to use it with a regular light bulb and mains power supply. will it support or blow up.
Raspberry Pi Home Automation - Control Lights, Computers, CCTV and More!
Raspberry Pi Light Controller
Internet of Things Class