Also, I like the idea of having a DIY watch which looks like a lab power supply (it also displays battery level in Volts). Looks like a small time-bomb, I would not wear it while in an airportĪs most of my design, I made this one because I had some 7-segment display laying around and I wanted to build something with those (that’s also why I don’t have a project BOM). Makes people thinks you are crazy (I should put this one on “features”…) Tricky to hand solder (if you don’t have an hot air station) Short battery life (less than one week with a 100mAh LiPo battery) Shows how to scan-drive 7-segment displays without external components Following the trend of doing things just-for-fun, this is a wrist watch using an AVR microcontroller and 7-segment display!
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