University at Buffalo · Sep 2025 – present

High-density EMG wearable

High-density muscle sensing through one shared amplifier chain

Orange flex PCB prototype of the EMG wearable, component side, with an ESP32 module and USB-C connector
4
Electrodes on the first prototype
8
Channels in the version I'm building now
1
Shared amplifier chain for every channel
Role
M.S. research project
Organization
University at Buffalo
Period
Sep 2025 – present
Location
Buffalo, NY
Tools and methods
  • Analog circuit design
  • PCB design
  • Flex PCB
  • SolidWorks
  • Sensor integration
  • Electronics-mechanical co-design

A wearable for high-density surface EMG that routes every channel through one multiplexed amplifier chain instead of one chain per channel. The first prototype has four electrodes, and I am expanding it to 8 channels. I own the analog front end, the flex PCB and the electrode-array enclosure.

The idea

High-density EMG usually needs a separate amplifier chain for every electrode. This wearable uses a patented multiplexed architecture instead: every channel shares one mux, amplifier and demux chain. The shared chain keeps the electronics small enough to wear.

What I own

End-to-end prototype development:

  • The analog front end
  • The flex PCB layout
  • The electrode-array enclosure

This is my M.S. research at the University at Buffalo, advised by Prof. Filip Stefanovic.

Status

The first prototype is a four-electrode flex PCB. I am now expanding the design to 8 channels (September 2026).