31 Dec '13, 10pm

My Story: The Arduino Guitar Tuner I didn't build

My Story: The Arduino Guitar Tuner I didn't build

My Story: The Arduino Guitar Tuner I Didn't Build Tweet By Ari Dubinski I was not the first person who tried to build an Arduino guitar tuner, nor was I the first person to fail. That doesn't mean, however, it hurts any less. I started the project with a full head of steam but this is not a success story. I began by combining Amanda Ghassaei's code for Audio-In and Frequency Detection for the Arduino. I found both on her Instructables page. I created a gain circuit for a 1/4 inch input that would output an analog signal between 0V to 5V to the A0 pin of the Arduino Uno . The code would work by receiving the analog input and executing an Interrupt Service Routine (ISR). The code had some cool subtleties, like checking for clipping and sending an index number (between 0 and 255), which was then analyzed as amplitude. Timer values are also collected and are used for the perio...

Full article: http://www.jameco.com/Jameco/workshop/challenge/arduino-g...

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