# Title Team Members TA Documents Sponsor
60 Bathroom Interactive Entertainment System
Jay Wen
Jing Huang
Zeping Lu
uma Lath other10.pdf
*Problem:* Taking bath could be one of the most soothing times of the day. Many people enjoy playing music while taking a bath. However, it becomes very inconvenient and even dangerous when we want to skip to the next song in the middle of the shower: using wet finger on a touch screen could damage the phone and even cause electricity accident. Therefore, we need to find a way to interact with the playlist without any physical contact. Furthermore, it would be even better if ambient lights are added for creating a more immersive, joyful shower experience, and temperature and moisture information could be also added to give user a better understanding of the current environment.

*Solution Intention:* To solve the problem, we could implement an interactive system that integrates all of the features mentioned above: playing music, illuminating ambient lighting, displaying temperature and moisture information, and being able to change songs and lighting with gesture (without any physical contact, which is the main idea of this project.) We plan to make this a portable device so the user could bring his or her favorite bathroom interactive system to any bathroom in the world. Indeed, the usage of this device is not limited to bathroom only. In addition to solving the crucial problem of the inconvenience and danger of phone usage during shower, this device makes our lives easier, more enjoyable, and provide information about the environment at any given circumstance.

*Solution Components:*

* Software Component:
* Music: Music is played from the user’s phone to the speaker using Bluetooth connection. Flipping hand up/down would go to the next/previous song in the playlist.
* Lighting: The color ambient lighting would change as the user flip his or her hand left/right.
* Hardware Component:
* Multiple infrared sensors are deployed to detect the movement of user’s hands. These data are gathered together using a micro-controller connected to solve for the trajectory of hands movement. Then the board will analyze the result and match a certain light mode or skip to another music in the list. The measured results will broadcast through LCD screen. Although the result can be collected by microcontroller, it should be general enough for other systems to easily utilize the data.
* Interactive light (intentionally WS2812b): This module allows programmable light control to interact with captured gestures and played music beats. The light cell will change the amplitude and frequency with beats profile adjusted. Apart from that, when we enter special mode or encounter unexpected events, they can give some feedback on our controller.
* Bluetooth module: The Bluetooth module transfers data from music playlists in mobile, and fetch data from
* Temperature sensor: This module allows we collect the room temperature and display on the LCD.
* Display: Majorly, the LCD screen serves as a display, indicating the humidity, temperature, and music playlist. The controlled by 4 bit dribbles signal from microcontroller, with the function of scrolling marquee and delayed input.

*Features:* The features of this device include a distance and gesture sensor, a speaker, an LCD screen for display, and lighting.
Expected look of the device:

[Image: Design-32 2.jpg]
*Criterion for Success:* The catching point for this project is contactless, enjoyment, and portable. There are some products on the market that has similar ideas as ours but none has the exact same feature and functionalities as ours.
[Image: Screen Shot 2022-02-03 at 02.31.39.png]Shower Power Pro from Ampere:

This device is placed on top of the shower head and is able to play music and emit lighting while taking a shower.

--: This device is not contactless, no gesture recognition, and it doesn’t provide any information about temperature and moisture.
[Image: Screen Shot 2022-02-03 at 02.38.00.png]
Lighted Mirror from Kohler:

This product is used as the mirror in the bathroom and is able to work with Alexa to play music and get environment information

--: This product is not portable. It has to be used at a specific bathroom. This product is not contactless/no gesture recognition. And it doesn’t have the ambient lighting (white light only).
We believe in the success of this device because:
1. Being able to change music/lighting without physical contact is enjoyable and safe during shower.
2. This device makes our lives easier and it is portable to bring to anywhere.
3. There is no existing product on the market that has the exact same features

attached doc:
Partner: Jay Wen, Jing Huang

Electronic Mouse (Cat Toy)

Jack Casey, Chuangy Zhang, Yingyu Zhang

Electronic Mouse (Cat Toy)

Featured Project

# Electronic Mouse (Cat Toy)

# Team Members:

- Yingyu Zhang (yzhan290)

- Chuangy Zhang (czhan30)

- Jack (John) Casey (jpcasey2)

# Problem Components:

Keeping up with the high energy drive of some cats can often be overwhelming for owners who often choose these pets because of their low maintenance compared to other animals. There is an increasing number of cats being used for service and emotional support animals, and with this, there is a need for an interactive cat toy with greater accessibility.

1. Get cats the enrichment they need

1. Get cats to chase the “mouse” around

1. Get cats fascinated by the “mouse”

1. Keep cats busy

1. Fulfill the need for cats’ hunting behaviors

1. Interactive fun between the cat and cat owner

1. Solve the shortcomings of electronic-remote-control-mouses that are out in the market

## Comparison with existing products

- Hexbug Mouse Robotic Cat Toy: Battery endurance is very low; For hard floors only

- GiGwi Interactive Cat Toy Mouse: Does not work on the carpet; Not sensitive to cat touch; Battery endurance is very low; Can't control remotely

# Solution

A remote-controlled cat toy is a solution that allows more cat owners to get interactive playtime with their pets. With our design, there will be no need to get low to the ground to adjust it often as it will go over most floor surfaces and in any direction with help from a strong motor and servos that won’t break from wall or cat impact. To prevent damage to household objects it will have IR sensors and accelerometers for use in self-driving modes. The toy will be run and powered by a Bluetooth microcontroller and a strong rechargeable battery to ensure playtime for hours.

## Subsystem 1 - Infrared(IR) Sensors & Accelerometer sensor

- IR sensors work with radar technology and they both emit and receive Infrared radiation. This kind of sensor has been used widely to detect nearby objects. We will use the IR sensors to detect if the mouse is surrounded by any obstacles.

- An accelerometer sensor measures the acceleration of any object in its rest frame. This kind of sensor has been used widely to capture the intensity of physical activities. We will use this sensor to detect if cats are playing with the mouse.

## Subsystem 2 - Microcontroller(ESP32)

- ESP32 is a dual-core microcontroller with integrated Wi-Fi and Bluetooth. This MCU has 520 KB of SRAM, 34 programmable GPIOs, 802.11 Wi-Fi, Bluetooth v4.2, and much more. This powerful microcontroller enables us to develop more powerful software and hardware and provides a lot of flexibility compared to ATMegaxxx.


- Product: [](url)

- Datasheet: [](url)

## Subsystem 3 - App

- We will develop an App that can remotely control the mouse.

1. Control the mouse to either move forward, backward, left, or right.

1. Turn on / off / flashing the LED eyes of the mouse

1. keep the cat owner informed about the battery level of the mouse

1. Change “modes”: (a). keep running randomly without stopping; (b). the cat activates the mouse; (c). runs in cycles(runs, stops, runs, stops…) intermittently (mouse hesitates to get cat’s curiosity up); (d). Turn OFF (completely)

## Subsystem 4 - Motors and Servo

- To enable maneuverability in all directions, we are planning to use 1 servo and 2 motors to drive the robotic mouse. The servo is used to control the direction of the mouse. Wheels will be directly mounted onto motors via hubs.


- Metal Gear Motors: [](url)

- L9110H H-Bridge Motor Driver: [](url)

## Subsystem 5 - Power Management

- We are planning to use a high capacity (5 Ah - 10 Ah), 3.7 volts lithium polymer battery to enable the long-last usage of the robotic mouse. Also, we are using the USB lithium polymer ion charging circuit to charge the battery.


- Lithium Polymer Ion Battery: [](url)

- USB Lithium Polymer Ion Charger: [](url)

# Criterion for Success

1. Can go on tile, wood, AND carpet and alternate

1. Has a charge that lasts more than 10 min

1. Is maneuverable in all directions(not just forward and backward)

1. Can be controlled via remote (App)

1. Has a “cat-attractor”(feathers, string, ribbon, inner catnip, etc.) either attached to it or drags it behind (attractive appearance for cats)

1. Retains signal for at least 15 ft away

1. Eyes flash

1. Goes dormant when caught/touched by the cats (or when it bumps into something), reactivates (and changes direction) after a certain amount of time

1. all the “modes” worked as intended

Project Videos