1. The keyboard

2. Materials ATmega Board with ATmega168 micro-controllerATmega Board with ATmega168 micro-controller NI myDAQNI myDAQ 4 LEDs4 LEDs WiresWires 6 switches6 switches Acrylic housingAcrylic housing 3D printed keys3D printed keys Northeastern University

3. 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.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. Northeastern University

4. Generic ATmega Board Schematic Northeastern University

5. Our ATmega Board (All Wired-Up) Northeastern University

6. Design 3D printed parts Acrylic housing

7. Result Fully functional 6 key, keyboard.Fully functional 6 key, keyboard. “music” being played can be recorded and looped for user convenience.“music” being played can be recorded and looped for user convenience. Tones for each key mimic those of a musical scaleTones for each key mimic those of a musical scale Red LEDs emit light to show which keys are depressedRed LEDs emit light to show which keys are depressed Demonstrates understanding of an electrical circuitDemonstrates understanding of an electrical circuit Northeastern University

8. Final product Northeastern University