# Title Team Members TA Documents Sponsor
57 Consumer device which indicates real-time signals [Pitched Project]
Bipin Ghimire
Brian Oh
Sakar Karki
Jialiang Zhang
#Problem: The urgent challenge of climate change has driven focus on energy production's carbon intensity. Yet, the real-time carbon impact of electricity consumption remains obscure to consumers. Existing models do not provide instantaneous feedback on the carbon intensity (CO2e/MWh) of electricity from local grids. This gap prevents consumers from making informed decisions to reduce their carbon footprint actively.

#Solution We propose a real-time carbon intensity indicator for residential consumers. This device will visually and audibly alert users to the current and changing carbon intensity of their local grid's electricity. The product will leverage this data to prompt automated energy consumption reduction during high grid strain or suggest energy-efficient appliances.

The pitch states “the function would be to get a residential electricity consumer to see and hear an indicator, whether via light, notification popup, or a sound which alerts them to either a current state or a changing state of real-time carbon intensity on their local grid. As the basic device matures, the business would be built around using this information to automate reductions in energy consumption overall or at times of grid strain, or identify more energy efficiency appliances, both with direct carbon reduction impacts.” Green, yellow, and red LEDs to show good, OK, bad, and a similar set of sounds. The product is wifi-enabled wall plug with a light and speaker controlled by a small circuit.

#Solution Components ##Subsystem 1: Real-Time Data Acquisition and Communication This subsystem will acquire real-time carbon intensity data from sources like ElectricityMaps, WattTime, and similar services. It will use the Wi-Fi module (ESP32) to fetch and communicate data to the indicator.

##Subsystem 2: User Interface Indicator Involves a set of LEDs (Green, Yellow, Red) and a speaker to provide visual and auditory feedback based on the real-time data. Part numbers: Green LED (WP710A10SGC), Yellow LED (WP710A10SYC), Red LED (WP710A10SRC), and a small speaker (CUI CMS-0361KLX). It will also provide a potential user input button (MDPSLFS) to trigger and automate energy-saving actions.

##Subsystem 3: Control and Automation Logic This will use a microcontroller (ESP32P) to process the data and control the LED and sound alerts. It will also interface with home automation systems to control energy consumption based on carbon intensity. AC prongs (Q-910) will also be used to be able to plug the device into the power outlet for power data and as a power source.

#Criterion For Success Our project's success will hinge on the following testable goals:

Accurate display of real-time carbon intensity with less than a 60-second lag from the data source. The ability to trigger and automate energy-saving actions in response to high carbon intensity readings. User-friendly interface that clearly communicates the current state and changes in carbon intensity to the consumer.

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

Project Videos