Project

# Title Team Members TA Documents Sponsor
17 Habit Forming Key Station
 Ali Husain
Cedric Mathew
Yuxuan Ma
 Abhisheka Mathur Sekar design_document2.pdf
final_paper1.pdf
photo1.png
photo2.jpeg
presentation1.pdf
proposal2.pdf
video
# Team Members:
- Ali Husain (alijh2)
- Cedric Mathew (cmathe26)
- Marsh Ma (yuxuanm4)

# Problem

People have a difficult time building habits. Specifically, a common issue that many have is losing or misplacing their keys/wallet whenever they enter their place of residence. If they were accustomed to placing and grabbing their keys from a specific designated location, then the likelihood of losing their keys and wallet would be significantly low.

# Solution

Our solution utilizes negative reinforcement to build positive habits for its users. We will build a designated station for placing one’s keys, or any small item of their choosing, when entering or leaving their home. It will begin detecting the proximity of the keys a few minutes after the keys have initially been removed from the dish, indicating the resident is not home. Once the resident returns home with the keys, a sensor should detect its presence with an RFID tag and continue ringing an alarm through a speaker until the keys are placed correctly. There will be a pressure sensor at the bottom of the dish that will indicate whether the keys have been put into the device. Our solution will have 5 subsystems: proximity detection, control and processing, alarm, confirmation, and power.

# Solution Components
## Subsystem 1: Proximity Detection Subsystem
This subsystem is responsible for detecting the presence of the keys when they are in close proximity to the station. It will use an RFID system comprising an RFID reader inside of the dish and an RFID tag attached to a keychain that the user will carry. When the RFID reader senses the tag, it triggers the alarm system. We will use the MFRC522 RFID Reader (Part No: MFRC522) and compatible RFID tags.

## Subsystem 2: Control and Processing Subsystem
The core of our project, this subsystem processes inputs from the Proximity Detection Subsystem and controls the Alarm Subsystem and Confirmation Subsystem. With the input from these three subsystems, we can compute whether the alarm needs to ring or not. When the user leaves with the keys, it will wait a few minutes before activating the proximity subsystem. This will await the RFID tag to come within proximity. Once detected, it will prompt the alarm subsystem to ring. Once it receives notification from the confirmation subsystem that the keys have been placed in the dish, the alarm will turn off. We will use ATmega2560 (https://www.microchip.com/en-us/product/atmega2560# ) as our microcontroller chip.

## Subsystem 3: Alarm Subsystem
Activated by the Control and Processing Subsystem, this subsystem emits an audible alarm when the keys are detected but not yet placed in the station. It consists of a small alarm or speaker, like the Piezo Buzzer (Part No: PSE-2907), that generates a distinct sound, prompting the user to place the keys in the designated spot. When the user places their keys in the dish, it will promptly turn off.

## Subsystem 4: Confirmation Subsystem
This subsystem confirms the placement of the keys in the station. It uses a pressure sensor/button at the bottom of the station, which, when pressed by the weight of the keys, signals the Control and Processing Subsystem to deactivate the alarm.
We plan to use the Thin Film Pressure Sensor (Part No: SEN-09376).

## Subsystem 5: Power Subsystem
This subsystem provides power to the device. We plan on using a 9V battery to power the device, as we need a power source that can last for several weeks at a time while also maintaining lightweight portability.

# Criterion For Success

1. The proximity detection subsystem can reliability detect keys within 15 feet of the dish
2. The alarm subsystem projects within 80-90dB (the standard level of an alarm clock) so it may be heard outside the room
3. The confirmation subsystem can detect a change in the weight of at least 20 grams which is the expected weight of 1 key and our keychain
4. The microcontroller accurately sends and receives signals from the subsystems 100% of the time
5. The power subsystem provides adequate power to the device with a multi-week battery life

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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