This is an eight-part series by industrial designer Eric Strebel, founder of Botzen Design, where he lets you follow along as he prototypes a portable solar charging unit.
The all-important prototyping process can be different between industrial designers and projects, but one thing that doesn't change is that you start with ideation. Before you spend any real money, you want to first figure out what's what by making basic, inexpensive mock-ups and doing a lot of sketching to identify and solve potential problems:
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