Project

# Title Team Members TA Documents Sponsor
31 Exercise Repetition Counter Using Discrete Clip On Device
 Arhan Goyal
Prithvi Patel
Vikrant Banerjee
 Sanjana Pingali design_document1.pdf
final_paper1.pdf
grading_sheet1.pdf
photo1.png
presentation1.pdf
proposal1.pdf
video
# Title
Exercise Repetition Counter Using Discrete Clip On Device

Team Members:
- Prithvi Patel (prithvi7)
- Arhan Goyal (arhang2)
- Vikrant Banerjee (vikrant3)

# Problem
Maintaining proper workout form and accurately tracking repetitions during exercises can be challenging, especially for individuals working out at home or without a trainer. Existing solutions either rely on expensive gym equipment or smartphone applications, which lack precision and real-time feedback. There is a need for a cost-effective, standalone device that can accurately count repetitions and display them in real-time without setting up a camera in the middle of gym (all existing solutions for the problem).

# Solution
We propose a wearable, discrete clip-on device with a custom PCB that uses an MPU6050 accelerometer and gyroscope to detect arm motion during exercises. The system will process motion data to identify and count repetitions, displaying the count on an 8-segment display in real-time. Additionally, the device will include a timer to measure the duration of each repetition and provide feedback through a vibration motor when the user completes a repetition. The time per repetition and set completion criteria can be adjusted using a simple dial or potentiometer.

# Solution Components

## Subsystem 1: Motion Detection and Processing
- **Function**: Captures arm motion using a 6-axis motion sensor and processes the data to detect exercise repetitions.
- **Components**:
- MPU6050 (6-axis accelerometer and gyroscope)
- Microcontroller for data processing and communication

## Subsystem 2: Timer and Feedback Mechanism
- **Function**: Measures the duration of each repetition and provides feedback through vibration.
- **Components**:
- Timer functionality implemented in software
- Vibration motor (e.g., 310-101) for feedback
- Dial or potentiometer for adjusting time settings (e.g., 10K potentiometer)

## Subsystem 3: Custom PCB
- **Function**: Provides a compact and efficient platform for integrating the motion sensor, microcontroller, power supply, and display connections.
- **Components**:
- PCB with integrated traces for components (sensors can be directly connected/soldered onto the PCB without additional breadboards or jumper cables)
- Voltage regulator (e.g., LM7805) for stable power supply
- Power source (rechargeable battery)

## Subsystem 4: Display and Feedback
- **Function**: Displays the real-time repetition count to the user.
- **Components**:
- 8-segment display
- Driver IC (e.g., MAX7219) for efficient control of the display

## Subsystem 5: Power Management
- **Function**: Ensures the device operates efficiently and reliably over extended periods.
- **Components**:
- Battery charging circuit (e.g., TP4056)
- On/off switch for user control

# Criterion For Success
1. The system accurately detects and counts exercise repetitions with a minimum accuracy of 90%.
2. The 8-segment display updates the repetition count in real-time without noticeable lag.
3. The timer accurately measures and tracks the duration of each repetition and signals set completion through vibration feedback.
4. The time for repetitions and sets can be easily adjusted using the dial or potentiometer.

With this design, we aim to provide a practical, affordable, and user-friendly solution for fitness enthusiasts to track their workout reps effectively.

Resonant Cavity Field Profiler

Salaj Ganesh, Max Goin, Furkan Yazici

Resonant Cavity Field Profiler

Featured Project

# Team Members:

- Max Goin (jgoin2)

- Furkan Yazici (fyazici2)

- Salaj Ganesh (salajg2)

# Problem

We are interested in completing the project proposal submitted by Starfire for designing a device to tune Resonant Cavity Particle Accelerators. We are working with Tom Houlahan, the engineer responsible for the project, and have met with him to discuss the project already.

Resonant Cavity Particle Accelerators require fine control and characterization of their electric field to function correctly. This can be accomplished by pulling a metal bead through the cavities displacing empty volume occupied by the field, resulting in measurable changes to its operation. This is typically done manually, which is very time-consuming (can take up to 2 days).

# Solution

We intend on massively speeding up this process by designing an apparatus to automate the process using a microcontroller and stepper motor driver. This device will move the bead through all 4 cavities of the accelerator while simultaneously making measurements to estimate the current field conditions in response to the bead. This will help technicians properly tune the cavities to obtain optimum performance.

# Solution Components

## MCU:

STM32Fxxx (depending on availability)

Supplies drive signals to a stepper motor to step the metal bead through the 4 quadrants of the RF cavity. Controls a front panel to indicate the current state of the system. Communicates to an external computer to allow the user to set operating conditions and to log position and field intensity data for further analysis.

An MCU with a decent onboard ADC and DAC would be preferred to keep design complexity minimum. Otherwise, high MIPS performance isn’t critical.

## Frequency-Lock Circuitry:

Maintains a drive frequency that is equal to the resonant frequency. A series of op-amps will filter and form a control loop from output signals from the RF front end before sampling by the ADCs. 2 Op-Amps will be required for this task with no specific performance requirements.

## AC/DC Conversion & Regulation:

Takes an AC voltage(120V, 60Hz) from the wall and supplies a stable DC voltage to power MCU and motor driver. Ripple output must meet minimum specifications as stated in the selected MCU datasheet.

## Stepper Drive:

IC to control a stepper motor. There are many options available, for example, a Trinamic TMC2100. Any stepper driver with a decent resolution will work just fine. The stepper motor will not experience large loading, so the part choice can be very flexible.

## ADC/DAC:

Samples feedback signals from the RF front end and outputs the digital signal to MCU. This component may also be built into the MCU.

## Front Panel Indicator:

Displays the system's current state, most likely a couple of LEDs indicating progress/completion of tuning.

## USB Interface:

Establishes communication between the MCU and computer. This component may also be built into the MCU.

## Software:

Logs the data gathered by the MCU for future use over the USB connection. The position of the metal ball and phase shift will be recorded for analysis.

## Test Bed:

We will have a small (~ 1 foot) proof of concept accelerator for the purposes of testing. It will be supplied by Starfire with the required hardware for testing. This can be left in the lab for us to use as needed. The final demonstration will be with a full-size accelerator.

# Criterion For Success:

- Demonstrate successful field characterization within the resonant cavities on a full-sized accelerator.

- Data will be logged on a PC for later use.

- Characterization completion will be faster than current methods.

- The device would not need any input from an operator until completion.

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