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Please refer this PCB checklist : PCB Checklist FA25.pdf

How to check your gerber file : PCBway_gerber_file_check_FA25.pdf

How to use the PCB oven (2070 ECEB) : Using the PCB Oven

In this course, you will be creating and ordering a PCB to use in your project. The primary method for ordering PCBs is to order them through PCBWay. With the help of your TA, you can order a simple, 2-layer, 100mm x 100mm PCB through PCBWay at no cost to you. This PCB will simply be fabricated, as opposed to assembled, so a major portion of this class will be soldering and assembling the PCB you order. This means that you will need to source your components either through the course or other means. See the getting parts page for more details.

Alternatively, you can order a PCB from any outside vendor (including PCBWay) and pay for the cost of the board out of pocket. By paying for a PCB yourself, you are not required to meet the deadlines imposed by the course and can sometimes get your board more quickly.

In rare cases, some teams will be allowed to order PCBs through the Electronics Services Shop in ECEB. If you have need of special board layouts or require a PCB very early in the semester, please discuss this option with your TA as early as possible.

PCBway Orders Through the Course

Orders through PCBway can be submitted and paid for by the ECE department with the help of your TA. Orders will be uploaded to PCBway by your TA and paid for on the dates listed on the course calendar. Please note that the PCBway orders will not be manufactured or shipped until they are paid for so please be aware of the lag time between order submission and payment. In addition, your order must pass PCBway's audit before the payment date for your order to be processed. In order to help students pass audit more quickly, we have provided a DRC file that can be imported in to EagleCAD to verify that your board meets PCBway's capabilities. Passing the DRC does not guarantee that your board will pass audit but it does greatly increase the probability of that event.

Electronic Services Shop

Orders placed through the Electronic Services Shop will require TA approval so please discuss with your TA before contacting the Services Shop. The software most commonly used is EagleCAD. Contact a technician in the Electronic Services Shop with questions.

Please be aware of the PCB deadlines posted on the course calendar. If you are unable to meet these deadlines, you will not be able to order a PCB through the the Electronic Services Shop. You will still be able to order PCBs through third party vendors, just be aware that rushed orders can become expensive.

Commercial quality boards

The most commonly used programs for board layout are Eagle and Orcad Layout. The two software packages below allow a schematic to be drawn and translated into a board layout.

Once the board has been laid out, some companies will manufacture small quantities for a very reasonable price.

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.

Components(TBD):

- Product: [https://www.digikey.com/en/products/detail/espressif-systems/ESP32-WROOM-32/8544298](url)

- Datasheet: [http://esp32.net](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.

Components(TBD):

- Metal Gear Motors: [https://www.adafruit.com/product/3802](url)

- L9110H H-Bridge Motor Driver: [https://www.adafruit.com/product/4489](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.

Components(TBD):

- Lithium Polymer Ion Battery: [https://www.adafruit.com/product/5035](url)

- USB Lithium Polymer Ion Charger: [https://www.adafruit.com/product/259](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