ASource: Accessible guitar tuner from pepijndevos on Tindie
Guitar Tuner for Blind GuitaristThis is a tuner that is made specifically for blind people. It uses audio feedback to tell you if a string is too high or too low.
How does it work?After turning it on, the tuner will be set to the low E string. Holding the button cycles through all 6 strings in standard guitar tuning. A pattern of beeps is played continuously. Low-high indicates the string is too low. High-low indicates the string is too high. A single beep indicates the string is tuned.
AppearanceThe current prototypes are circuit boards slightly smaller than a credit card. Going around the edge clockwise there is a 9V battery connector wire(bottom left), the power switch(left), a push button for changing the current string, a piezzo buzzer(top left), the microphone amplification circuit(top right), the microphone(right), the microcontroller(bottom right), a 6-ping programming header(bottom), and then we're back at the start. In the middle is a voltage regulator for powering the microcontroller.
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