Low cost prototypes: sketching & paper prototyping
Have you ever struggled with how to get from an idea to a high fidelity prototype? Every design has to start somewhere and even reputable companies like Google often start with low fidelity prototyping options such as sketching and paper prototyping. After all, the fidelity of your prototype should match the fidelity of your idea, so stop worrying and start sketching.
Below is a video that quickly introduces the concept of paper prototyping:
The equivalent of this in hardware is using things like cardboard, cheap plastic, 3D printers, laser cutters and electronic breadboards. Watch the TED Talk below of how Google used these rapid prototyping techniques to come out with the first Google Glass: