Reaction Timer
How fast are your reflexes? Find out with a millisecond-accurate timer based on the 555 timer chip, in this experiment from Make: Electronics.
Make: Electronics is an electronics primer for the early 21st century. It’s written for the absolute beginner and all those who’ve wanted to learn electronics. Those who’ve wanted to build all the cool kits out there, or to try their hand at programming microcontrollers, but who’ve found themselves intimidated by existing books and online resources that seem to be written by deep geeks for deep geeks.
Make: Electronics is written in a fun, clear-spoken, graphical style. It includes 36 experiments and projects, plus dozens of sidebars on the science, history, and personalities ...
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