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After a brief exercise or on a sunny day, you surely want to cool yourself faster. This project will help you accomplish that with what you certainly have already. That is a power bank, selfie stick, and a dc motor. Given that the whole setup is small and can be dismantle so easily, you can take it along wherever you go and assemble it within few minutes. isn't that great. So, if you are ready, let's get started.
■ glue the DC motor to support (a foam rubber or a small rectangular piece of wood) and place a small propeller to the dc motor.
■ fasten it to the selfie stick's phone holder.
■ Adjust the height of the selfie stick to a desired one.
■ connect the single strand wires of the usb cable to the power bank.
■ Observe how the dc moto rotates to creates a current of air to cool you.