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| − | == '''Arduino Frequency Counter''' == | + | == '''Self-Tuning Analog Radio''' == |
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| − | | + | [[Image:tunerOPEN.jpg]] |
| − | | + | <br> |
| − | http://interface.khm.de/index.php/lab/experiments/arduino-frequency-counter-library/
| + | [[Image:tunerHIGH.jpg]] |
| − | | + | <br> |
| − | In many applications involving computers and radio electronics, it is necessary to have a "Frequency Counter" as a piece of test equipment amongst your arsenal of tools. A frequency counter counts the number of alternations a signal has during a short time period, and displays the frequency of the signal in a numerical format. With the proper scaling and conditioning, a frequency counter can be used to show the frequency of a radio transmitter, a note of a piano, the rotational speed of an engine, amongst many other things.
| + | [[Image:tunerLOW.jpg]] |
| − | For the sake of art projects, it might be necessary to count the number of "pulses" that a sensor receives, and have that number available inside of a computer for use by another program.
| + | <br> |
| − | My personal interest in this technology (with respect to my project) stems from a need to count the rotations of an engine in order to accurately control its speed.
| + | [[Image:tuning.jpg]] |
