LED Guitar Tuner
The
LED Ibanez Digital Auto Tuner is a simple model. It uses LEDs to display how
tuned each string of the guitar is. Image 2a shows the front of the tuner with
the display LEDs. The lower five LEDs show what pitch the tune received in the
microphone (6E,5A,4D,3G,2B,1E). The upper LED display whether the note
played is flat (too low) or sharp (too high). A blue LED lights up when the
note is correct.
Upon opening the tuner and
viewing the circuit board, it appears to be a lot more simple that the
previously mentioned alarm clock. There are two visible capacitors and what
appears to be an integrated circuit connected to a large amount of resistors
and LED connections. The device runs off two AA batteries. When fully taken
apart the circuit board is very simple on the other side. With a small
microphone to record the sounds, the LED and the power switch (Image 2c and
2d).
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| 2a |
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| 2b |
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| 2c |
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| 2d |
The modification for this device
is an interesting concept. The original idea was to reverse the functions of
the Digital Auto Tuner. When the Arduino device plays a certain LED or a button
press lights a certain LED, the sound corresponding with the LED’s pitch and
tone out of a connected speaker. This would apply to all of the LEDs on the
device and the tune they respond to. This modification is reversing the main
function of the device while making it more interesting.
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