Week 6

We are unsure of how to play play notes by command on this xylophone. Therefore, we are thinking of using the two mallets to play just two notes. As of now, it can play note C (60) and B(70).

Week 5 Update

Design change:

Instead of making the bottom piece with the 3-d printer, we chose to make it out of wood. The two bottom servos fit very well and are now stationary. Also, our adapters have shipped and are waiting to be used!

Circuit Diagram

Design Proposal (Fixed)

Design Proposal (Fixed)

This design proposal includes a technical sketch with detailed measurements, a brief description of the instrument’s operation and the Bill of Materials.

Detailed Technical Sketch of Design

 Brief Description:

• How is sound produced and controlled (what are the mechanical actuators?)
• There will be 4 servos in total. The servos will be divided into 2 groups of 2 to hold 2 mallets.
  Two servos will be attached to each other by wire, then they will receive the orders from the arduino. 
  The bottom servo will allow the top servo move left to right. The top servo will have the mallet attached to it (with a wire also). The top servo’s purpose is to make the mallet move up and down allowing it to hit the notes on the xylophone (ideally the mallet will hit all 8 notes).  
  Sound will be produced acoustically by the tap of the mallet.
• How are all the components powered?
• All the servos will be connected to a breadboard, which will also be connected to the power source and the Arduino.The components will be powered by an external energy source-- the 12V power supply/batteries-- other than the laptop’s because the laptop's power is too weak.
• What’s the musical range of the instrument?
• Low C to high C

Bill of Materials (BoM):

Bill of Materials (BoM)
No.	Parts	Qty	Description	Unit Cost	Net Cost	Shipping	Total	Lead Time	Status	Supplier	Link
1	Xylophone	1	8-keyed instrument	8.99	8.99	0.00	8.99	2 days	Shipped	Amazon	Link
2	K'nex Pieces	N/A	Build structure	0.00	0.00	0.00	0.00	N/A	Available	Lab
3	Tape	1	Hold parts together	8.00	8.00	0.00	8.00	2 days	Ordered	Amazon	Link
4	Servos	2	Rotational motor	0.00	0.00	0.00	0.00	N/A	Available	Lab
5	Arduino	1	Served as control board	0.00	0.00	0.00	0.00	N/A	Available	Lab
6	Battery	4	Power source	5.15	5.15	0.00	5.15	2 days	Ordered	Amazon	Link
						BoM Total	22.14

 

Autocad Fabricated piece

This fabricated piece will be a platform that connects the two bottom servos to make it stationary. It is a rectangular prism with two equivalent extrusions that are the width of servo.

Design Proposal

This design proposal includes a technical sketch with detailed measurements, a brief description of the instrument’s operation.

Detailed Technical Sketch of Design

 Brief Description:

• How is sound produced and controlled (what are the mechanical actuators?)
• Two servos will be stacked together where they will get their orders from the arduinos. Bottom servo will allow the top servo move left to right. The top servo will have the mallet attached to it. The top servo’s purpose is to make the mallet move up and down allowing it to hit the notes on the xylophone. Sound will be produced acoustically by the tap of the mallet. The mallet will be taped to a solenoid, which is controlled by an Arduino board.
• How are all the components powered?
• The solenoid will be connected to a breadboard, which will also be connected to the power source and the Arduino.The components will be powered by an external energy source other than the laptop’s because its power is too weak.
• What’s the musical range of the instrument?
• Low C to high C

Idea for iXylophone