Week 15
Applications and Implications
What will it do?
For my final project I wanted to infuse a little “character” into inanimate objects, so I decided to make a sneezing tissue box. My aim is to detect a sneeze (or loud noise) and make the tissue box move as it were sneezing itself.
Who's done what beforehand?
- Lolzzz IDEO 2015
When this alarm clock goes off it rocks back and forth and giggles like a person. You can make it laugh even louder by tickling its belly button. - Blendie Kelly Dobson 2003-2004
This blender’s speed changes according to the noise a person makes. It blends slowly to a person’s low growl and increases speed as the growl goes high. - Nervous Toaster Harvey & John 2012
This toaster “trembles and shakes as he becomes more and more anxious at the thought of… popping toast!”
The system
In this system I use a condenser microphone to detect sound and servo motors to make the tissue box move. I will use I2C communication between the microcontroller boards with Attiny 44s. The mic board is the master and the servo motor board is the slave.Supply | Retailer | Cost |
PCB (FR-1) x 1 | ||
Attiny45 x 2 | Digi-Key | $2.84 |
20MHz Crystal x 2 | Digi-Key | $1.26 |
Condensor Microphone x 1 | 秋月 | ¥100 |
Op-amp x 1 | 秋月 | ¥150 |
Led x 2 | Digi-Key | $0.80 |
1uf Capacitors x 4 | Digi-Key | $0.96 |
10uf Capacitors x 2 | Digi-Key | $0.32 |
0 ohm Resistors x 3 | Digi-Key | $0.30 |
1k ohm Resistor x 2 | Digi-Key | $0.20 |
10k ohm Resistors x 9 | Digi-Key | $0.90 |
6 Pin SMD Type Male Header x 4 | Digi-Key | $4.16 |
Servo motors x 2 | 秋月 | ¥800 |
White acrylic board x 1 (300x900mm, 3mm thick) | Tokyu Hands | ¥2,846 |
Shielded cable x 1 (1m long, about 2.5mm in diameter) | オヤイデ電気 | ¥173 |
Schedule
- 5/31 Making the board for the microphone
Design the board with Eagle. Mill the board with the Modela. Solder components - 6/2 Making the board for the servo motors
Design the board with Eagle. Mill the board with the Modela. Solder components - 6/5 Programming the boards
- 6/6 Prototyping the tissue box case
Design the shape using Inkscape. Make a prototype with cardboard using the laser cutter and attach servos to check its movement. - 6/7 Making the microphone case
Design the data using Fusion 360. Printing the data with the 3D printer. - 6/9 Making the tissue box case
Purchasing the material. Design the box using Inkscape. Make a prototype with thin linden board using the laser cutter (to check the measurements). Cut acrylic board and assemble pieces - 6/10 Debugging