Smart Ball

Created on 21 Nov 2016

Did your ball fly over the fence? Just command it to return back.

Our project is a bouncing ball that can move forward, backward, and sideways. It does not require any physical contact, just a remote control.

@jaeeunl

Jae-Eun (Esther) Lim

@leehsu

Lee Hsu

@acedillo

Ana Cedillo

@camin

Christine Amin

Part Cost Quantity
McMaster-Carr $5.01 1
Torsional Spring
McMaster-Carr $28.71 1
Cushioning Egg Crate Sheets
McMaster-Carr $6.39 1
6 Pack of Springs
Arduino Uno Enclosure - Clear Plastic - PRT-12838 - SparkFun Electroni $7.95 1
Arduino Uno Case
Amazon.com: Dxg 100 Pack 6 Inch 2.5*150mm Self-locking Nylon Cable Tie $5.99 1
100 Pack Zip Ties
503 Service Unavailable Error $12.99 1
9V Battery Pack
Amazon.com: Super Glue The Original Super Glue 15187, .07 Ounce, 12-pa $5.77 1
Super Glue 12 Pack
503 Service Unavailable Error $9.99 1
Arduino Bluetooth Module
Rocker Switch - SPST (round) - COM-11138 - SparkFun Electronics $0.50 3
SparkFun Rocker Switch
Breadboard-Friendly PCB Mount Mini Speaker - 8 Ohm 0.2W ID: 1898 - $1. $1.85 1
Breadboard for Circuits
503 Service Unavailable Error $8.29 1
7" Hamster Ball
McMaster-Carr $9.62 1
Thicker Balsa Wood Strip
Arduino Uno - R3 - DEV-11021 - SparkFun Electronics $24.95 1
Arduino Uno - R3
Pololu - 75:1 Metal Gearmotor 25Dx54L mm LP 6V with 48 CPR Encoder $34.95 3
6V DC Gearmotor
McMaster-Carr $5.83 1
Balsa Wood Strip
Pololu 25D mm Metal Gearmotor Bracket Pair $7.45 2
Gearmotor Bracket
Dual H-Bridge Motor Driver for DC or Steppers - 600mA - L293D ID: 807 $2.95 2
Motor Driver IC
Amazon.com: uxcell 2 Pcs Black Plastic 9V Cells Battery Holder Case Bo $2.84 1
2 Pc Battery Case
503 Service Unavailable Error $8.99 1
Bouncing Rubber Balls
503 Service Unavailable Error $16.27 1
10" Hamster Ball
Remaining Budget: $11.41
Jae-Eun (Esther) Lim 17 Jan 2017, 10:41 p.m. CST
Monday: Figure out how to attach the spring system, trigger and pendulum. CAD parts that need to be laser cut. Tuesday: Laser/machine cut parts. Assemble individual parts. Start wiring Arduino and motors. Edit CAD for trigger (increase radius to increase spring’s compressed length).
Jae-Eun (Esther) Lim 19 Jan 2017, 12:33 p.m. CST
Wednesday: Laser cut larger trigger. Hardware. Test the spring system.
Jae-Eun (Esther) Lim 19 Jan 2017, 11:21 p.m. CST
Thursday: Attach the trigger and spring system inside the ball. Test runs. Connect to blue tooth. Issues: 1) Balsa is too weak for a spring base. 2) Spring support rods are too short they get stuck to the edge of the bottom cylinders as springs compress. Solutions: 1) Use acrylic spring base. 2) Elongate the bottom cylinders so that the rods are already inside the cylinder when uncompressed.
Jae-Eun (Esther) Lim 20 Jan 2017, 11:58 a.m. CST
Friday: Assemble everything together!