The keyboard
Materials
• ATmega Board with ATmega168 micro-controller
• NI myDAQ
• 4 LEDs
• Wires
• 6 switches
• Acrylic housing
• 3D printed keys
Northeastern University
Description
• The objective was to create a small keyboard
instrument. Six switches are used as keys for the
instrument. The ATmega168 micro-controller is used
to control each key’s frequency. The Ni myDAQ is
used to power and program the keys’ frequency. The
Ni myDAQ also records what is played. This feature is
included so that music could be played back and
looped. 3D printed keys are used for user friendly
playing. A clear acrylic housing is used for structural
support.
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Generic ATmega Board
Schematic
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Our ATmega Board
(All Wired-Up)
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Design
3D printed parts
Acrylic housing
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Result
• Fully functional 6 key, keyboard.
• “music” being played can be recorded and looped for
user convenience.
• Tones for each key mimic those of a musical scale
• Red LEDs emit light to show which keys are depressed
• Demonstrates understanding of an electrical circuit
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Final product
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