Project

# Title Team Members TA Documents Sponsor
22 Smart Stick System (Triple S)
 Pranav Nair
Ritvik Manda
Shivam Patel
 Dongming Liu design_document1.pdf
proposal1.pdf
proposal2.pdf
# Smart Stick System (Triple S)

Team Members:
- Ritvik Manda (rsmanda2)
- Pranav Nair (pranavn7)
- Shivam Patel (shivamp6)

# Problem

Lacrosse players and coaches currently lack real-time, detailed performance metrics to help improve gameplay. Traditional training methods rely heavily on subjective observation, which is not very consistent. No tools such as those available for other sports like baseball, golf, soccer, etc are available to monitor and improve lacrosse form and accuracy, especially with the player alone. Since lacrosse is not a well known sport, it becomes difficult for beginners and enthusiasts to start learning the mechanics of the stick and being proficient in it.

# Solution

This project aims to address the need for a smart, data-driven tool that can measure shot speed, accuracy, and stick form, providing players with accurate and immediate feedback to enhance their training and technique. By incorporating motion tracking, the system will enable players to adjust to their game, fostering more efficient and targeted improvement. This will allow experienced players to obtain performance data and also aid beginners in strengthening their form and tactics.

As an overview, our system will include two overall subsystems: one “base” including the pcb, a microcontroller, an LCD screen, and a camera which overall exists to act as the processing unit of the system and use computer vision to analyze a player’s form. This base alone will be able to process and provide general feedback via the LCD screen or more specific feedback via an application. The second subsystem is meant to be mounted to the back end of the lacrosse stick and must be relatively small and lightweight. It will include a small microcontroller with low energy bluetooth capability as well as an accelerometer and gyroscope to transmit more detailed info about swing speed and stick angle to the base. This detailed dataset can lead to enough information to process form and more important information like how fast and what trajectory a ball would have been thrown.

# Solution Components

## Subsystem 1: LaxHub (external, box unit)

LaxHub is the main processing unit of this system and contains the custom PCB, microcontroller, LCD screen, and camera, as well as necessary functionality to talk to subsystem 2 via bluetooth. The LaxHub will need to be powered by a rechargeable battery.

- Microcontroller: ESP 32
- LCD Screen: ST7735R SPI LCD Screen
- Camera: Focus 5MP OV5647 Sensor
- Rechargeable Battery: Jameco ReliaPro Lithium Ion Polymer Battery 3.7V 500mAh Rechargeable

## Subsystem 2: LaxSense (stick unit)
LaxSense is a subsystem that mounts on the lacrosse stick, which will contain the microcontroller, accelerometer, and the gyroscope. These parts will work in conjunction to keep track of performance metrics such as shot speed, stick angle, and form. Because this is a standalone device, this will need to be powered by a small battery system.

- Microcontroller: LOLIN D1 mini (based on ESP-8266EX)
- Accelerometer + Gyroscope: MPU6050 OR WT901BLE MPU9250
- Rechargeable Battery: B0143KH9KG, 3.7V-2600mAh-9.62Wh,18650 Rechargeable Li-ion Battery Pack

## Subsystem 3: TripleS (Application)
Since the LCD display in LaxHub can’t show all metrics and history, this app will manage data display and analysis.

- React: Front-end framework for the application.
- Kinesis Data Streams: Real-time data streaming from the Smart Lacrosse Stick.
- Kinesis Data Analytics: Real-time analysis of the streamed data.
- AWS Lambda: Process data from Kinesis streams.
- DynamoDB: Store historical data for retrieval.
- AWS Amplify: For app deployment and hosting.

# Criterion For Success

1. Accuracy of Metrics: Ensure the stick unit measures shot speed and stick angle with a precision within ±5% of actual values, validated through calibration and expert comparison.

2. Real-Time Feedback: Provide performance feedback with a latency of less than 5 seconds from sensor data capture to display on the app, ensuring immediate and actionable insights.

3. Scalability: Ensure the cloud infrastructure can handle varying loads and scale automatically to accommodate increasing data and user activity without performance degradation.

Automatic Piano Tuner

Joseph Babbo, Colin Wallace, Riley Woodson

Automatic Piano Tuner

Featured Project

# Automatic Piano Tuner

Team Members:

- Colin Wallace (colinpw2)

- Riley Woodson (rileycw2)

- Joseph Babbo (jbabbo2)

# Problem

Piano tuning is a time-consuming and expensive process. An average piano tuning will cost in the $100 - $200 range and a piano will have to be retuned multiple times to maintain the correct pitch. Due to the strength required to alter the piano pegs it is also something that is difficult for the less physically able to accomplish.

# Solution

We hope to bring piano tuning to the masses by creating an easy to use product which will be able to automatically tune a piano by giving the key as input alongside playing the key to get the pitch differential and automatically turning the piano pegs until they reach the correct note.

# Solution Components

## Subsystem 1 - Motor Assembly

A standard tuning pin requires 8-14 nm of torque to successfully tune. We will thus need to create a motor assembly that is able to produce enough torque to rotate standard tuning pins.

## Subsystem 2 - Frequency Detector/Tuner

The device will use a microphone to gather audio measurements. Then a microprocessor processes the audio data to detect the pitch and determine the difference from the desired frequency. This can then generate instructions for the motor; direction to turn pegs and amount to turn it by.

## Subsystem 3 - User Interface/Display Panel

A small but intuitive display and button configuration can be used for this device. It will be required for the user to set the key being played using buttons on the device and reading the output of the display. As the device will tune by itself after hearing the tone, all that is required to display is the current key and octave. A couple of buttons will suffice to be able to cycle up and down keys and octaves.

## Subsystem 4 - Replaceable Battery/Power Supply

Every commercial product should use standard replaceable batteries, or provide a way for easy charging. As we want to develop a handheld device, so that the device doesn’t have to drag power wires into the piano, we will need a rechargeable battery pack.

# Criterion For Success

The aim of the Automatic Piano Tuner is to allow the user to automatically tune piano strings based on a key input alongside playing a note. We have several goals to help us meet this aim:

- Measure pitch accurately, test against known good pitches

- Motor generates enough torque to turn the pegs on a piano

- Tuner turns correctly depending on pitch

- Easy tuning of a piano by a single untrained person

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