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Arduino Variometer In A Mint Tin. ... sensor, buzzer, and the 9 V battery that powers it all. We know what you’re thinking, but don’t worry; ... The wide speed range and changing dynamics ...

We know that measuring the speed of light with an Arduino is possible. It’s just that the implementation is hard. Last month we saw [Udo]’s blinkenlight shield that can be used as a lin… ...