About a month ago, I realized I just couldn’t deal with loose batteries in my notebook anymore. I couldn’t figure out a non-fiddly way to securely store them—if they were secure, then it took forever to fish them out and if not, well, I’d lose them. It made me think of Jie’s wonderful circuit sketchbook prototype that uses an auxiliary cell phone battery embedded in the back cover and can be charged via USB. How might a beginner create a simpler version of her circuit sketchbook?
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