EMG Homekit
Junior BME Design Project
Overview
Objective
Create an assistive device for semi or total-paraplegic users to control simple electronics like turning on lights by activating muscles they do have
Process
Prepared, reviewed, and signed a Design History File for the device
Utilize an EMG sensor and digital low-pass filter to detect a biceps activation
Create CAD models of each component with Fusion 360 and showed the relationship between the components with CAD joint relationships
Implemented a step-up voltage regulator to turn 3.47V into 5.0V
Manufactured the device with 3D printing, laser cutting, and soldering electronics
Designed a light in a 4-bit Johnson Ring Counter Circuit to act as the receiver of the device
Result
The device can detect a muscle contraction with 90% accuracy, which tells lights at the receiver ends to turn on through bluetooth
The user interface of the device can show the user when it’s on, calibrating, searching for bluetooth connection, and successfully forming a connection
The LIPO battery of the device was able to be recharged and used without damaging the electronics