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… ...

The sensor sends “hit” signals to a small Arduino Uno via a PC817 optocoupler. The headcount is then displayed on a small LCD screen positioned above the speed bag, allowing you to keep track ...

Posted in home hacks Tagged air conditioner, arduino, home automation ← Hackaday Prize Entry: Teaching OpAmps Hackerspace Happeninging: A Booc For C-Base → ...