Project

# Title Team Members TA Documents Sponsor
23 Retrofitting an iMac G3 Mouse to be Bluetooth-Enabled for Use in the 21st Century
 Saif Kazmi
Savannah Moon Pagan
Sebastian Carrera
 Jialiang Zhang final_paper1.pdf
other1.pdf
presentation1.pdf
proposal1.pdf
proposal2.pdf
# Retrofitting an iMac G3 Mouse to be Bluetooth-Enabled for Use in the 21st Century

Team Members:
- Savannah Pagan (spagan6)
- Saif Kazmi (skazmi21)
- Sebastian Carrera (carrera9)

# Problem
Describe the problem you want to solve and motivate the need.

Disposal of outdated technology contributes to approximately 50 million tons of e-waste annually, leading to environmental concerns. Our project aims to demonstrate a sustainable approach to repurposing technology from the past, diverting it from landfills and back into the consumers’ hands.

Specifically, by modernizing old devices, like updating the original iMac G3 to modern computing standards, as well as its original peripherals, such as the mouse included with the device, we not only extend the lifespan of these devices but also preserve their original creative style and design intent. This initiative will align vintage technology with modern computing needs, ultimately fostering a more eco-friendly and innovative technological landscape.

# Solution

Our project aims to replace legacy hardware within the 1998 iMac G3 by utilizing the internal components of a newer Mac Mini computer. The new components will be mounted inside the original iMac shell to give new life to this outdated machine. The original CRT screen will be replaced with a newer LCD screen. The original speakers and disc drive of the iMac will be re-utilized as well, and the ports will be upgraded to the relevant modern port types.

We also aim to update the original Apple USB mouse included with the device by using modern optical sensors and bluetooth to replace the legacy hardware. A modern switch of higher quality and durability will replace the original switch used for the mouse button and rather than physical rollers interacting with a rubberized ball on the bottom of the mouse, we will use an optical sensor to detect mouse movement. The user can customize the sensitivity of the mouse, a feature unavailable on the original hardware. The USB connection will be replaced with bluetooth to communicate with a computer. Due to its wireless nature, the mouse will be battery powered. The mouse can detect when it is not being used and automatically shut off as a battery saving measure, similar to modern bluetooth mice.

# Solution Components
2014 Mac Mini - 8GB RAM, 1 TB of storage

The Mac Mini will be utilized to update the iMac G3 to modern computing standards.

Mouse button

An Omron D2LS-21 switch will be used for the mouse button. It will be placed strategically on our PCB to avoid or minimize modification of the original mouse housing.
https://www.mouser.com/ProductDetail/Omron-Electronics/D2LS-2110M?qs=OcgtsXO%252B3gvFuywVVfHEYw%3D%3D

Optical sensor

A PixArt PMW-3389 or PMW-3360 optical sensor will be used to detect mouse movement. These sensors are commonly used in modern mice. They can be purchased separately, or salvaged from an extremely wide variety of mice.
https://www.tindie.com/products/citizenjoe/pmw3389-motion-sensor/

Bluetooth connectivity/Microcontroller

An ESP32 microcontroller will be used to communicate with the computer over Bluetooth. Additionally, it can process sensor inputs and determine whether the mouse is idle.

Battery/Charging

Our goal is to use a rechargeable lithium ion battery. If space permits, we will use a USB-C connector for charging due to its ubiquity. If this proves to be impractical due to space constraints, we will use a barrel jack, though this is a last resort.

# Criterion For Success

The iMac powers on
The iMac LCD display turns on
The iMac can connect to WiFi
The iMac can function as well as a modern laptop, meaning that it can run multiple applications at once, as well as perform actions within these applications
The iMac ports function
The iMac has Bluetooth connectivity functionality
The mouse can connect to a modern computer with bluetooth
The mouse can provide clicking functions to a modern computer
The mouse can accurately move a cursor on a modern computer
Disregarding the missing USB cable, the mouse must be visually unchanged from the original product
The mouse must last for ??? hours of use (to be determined depending on type of batteries chosen to work with, at least a few hours of charge)

Modularized Electronic Locker

Jack Davis, Joshua Nolan, Jake Pu

Modularized Electronic Locker

Featured Project

Group Member: Jianhao (Jake) Pu [jpu3], Joshua Nolan [jtnolan2], John (Jack) Davis [johnhd4]

Problem:

Students living off campus without a packaging station are affected by stolen packages all the time. As a result of privacy concerns and inconsistent deployment, public cameras in Champaign and around the world cannot always be relied upon. Therefore, it can be very difficult for victims to gather evidence for a police report. Most of the time, the value of stolen items is small and they are usually compensated by the sellers (Amazon and Apple are very understanding). However, not all deliveries are insured and many people are suffering from stolen food deliveries during the COVID-19 crisis. We need a low-cost solution that can protect deliveries from all vendors.

Solution Overview:

Our solution is similar to Amazon Hub Apartment Locker and Luxer One. Like these services, our product will securely enclose the package until the owners claim the contents inside. The owner of the contents can claim it using a phone number or a unique user identification code generated and managed by a cloud service.

The first difference we want to make from these competitors is cost. According to an article, the cost of a single locker is from $6000 - $20000. We want to minimize such costs so that we can replace the traditional mailbox. We talked to a Chinese manufacturer and got a hardware quote of $3000. We can squeeze this cost if we just design our own control module on ESP32 microcontrollers.

The second difference we want to make is modularity. We will have a sensor module, a control module, a power module and any number of storage units for hardware. We want to make standardized storage units that can be stacked into any configuration, and these storage units can be connected to a control module through a communication bus. The control module houses the hardware to open or close all of the individual lockers. A household can purchase a single locker and a control module just for one family while apartment buildings can stack them into the lockers we see at Amazon Hub. I think the hardware connection will be a challenge but it will be very effective at lowering the cost once we can massively manufacture these unit lockers.

Solution Components:

Storage Unit

Basic units that provide a locker feature. Each storage unit will have a cheap microcontroller to work as a slave on the communication bus and control its electronic lock (12V 36W). It has four connectors on top, bottom, left, and right sides for stackable configuration.

Control Unit

Should have the same dimension as one of the storage units so that it could be stacked with them. Houses ESP32 microcontroller to run control logics on all storage units and uses the built-in WiFi to upload data to a cloud server. If sensor units are detected, it should activate more security features accordingly.

Power Unit

Power from the wall or from a backup battery power supply and the associated controls to deliver power to the system. Able to sustain high current in a short time (36W for each electronic lock). It should also have protection against overvoltage and overcurrent.

Sensor Modules

Sensors such as cameras, motion sensors, and gyroscopes will parlay any scandalous activities to the control unit and will be able to capture a photo to report to authorities. Sensors will also have modularity for increased security capabilities.

Cloud Support

Runs a database that keeps user identification information and the security images. Pushes notification to end-users.

Criterion for Success:

Deliverers (Fedex, Amazon, Uber Eats, etc.) are able to open the locker using a touchscreen and a use- provided code to place their package inside. Once the package is inside of the locker, a message will be sent to the locker owner that their delivery has arrived. Locker owners are able to open the locker using a touchscreen interface. Owners are also able to change the passcode at any time for security reasons. The locker must be difficult to break into and offer theft protection after multiple incorrect password attempts.

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