THE Unused Uses of Usb That didn't know with smart phone fan OTG support

THIS IS FOR SCIENCE AND ELECTRICITY BUT IF U WANT TO MAKE IT JUST WITH YOUR ADULT SUPERVISION What do you need 1.Usb cable not in used 2.LED 3. OTG if u want to fan attach to smart phone or if u want attach to computer that not want otg 4.computer fan or old cooling pad fan that not in use5.Mot...

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from Instructables: exploring - technology http://ift.tt/1K4PjWh