background preloader


Facebook Twitter

Ericdsc: Simple High-Performance DIY EMG based on the Zoom H4N. High-Performance DIY EMG based on the Zoom H4N What is an EMG?

ericdsc: Simple High-Performance DIY EMG based on the Zoom H4N

Like an EEG and an EKG, it measures the electrical impulses that make the human body work. Whereas an EEG measures the brain and an EKG the heart, an EMG looks at electrical activity over the rest of the body -- which pretty much means the muscles. To get your muscles to contract, the nervous system sends electrical pulses into the muscle fibers, which amplify those pulses and send them on to other fibers until the whole muscle is moving. Here's what a normal EMG might look like: What's it good for? Recording muscle activity! But people use EMGs for all sorts of physical therapy and sports applications. The DIY EMG The heart of the DIY EMG is a Zoom H4N audio recorder hooked up to three electrodes -- two measurement electrodes and a common ground. The Zoom recorder is recording at the highest quality setting, 24bit/96kHz.

The Electrodes I went through four designs for the measurement electrodes. Here's what the build looked like: Manufacturers of professional surface electromyography products ( emg / semg ) and biomechanical sensors. Bio-Sensing. How to measure it: Near-infrared spectroscopy - Electroencephalography (EEG) - How it can be used: Communication Prosthetics - Cursor control - Gaming - Toys - Marketing, focus groups Fashion - NeuroWear - Art - Music - Supplies Links: 1.


Neurosky EEG Headgear $30-200, mostly single channel dry electrode EEG systems/hackables mindwave - xwave for iphone - Chips - OEM - neurosky - diy - Hackable Toys: Mattel Mindflex Game - Uncle Milton Force Trainer - 2. >>> DIY ECG Machine On The Cheap « Note from the Author: This page documents how I made an incredibly simple ECG machine with a minimum of parts to view the electrical activity of my own heart.

>>> DIY ECG Machine On The Cheap «

Feel free to repeat my experiment, but do so at your own risk. There are similar projects floating around on the internet, but I aim to provide a more complete, well-documented, and cheaper solution, with emphasis on ECG processing and analysis, rather than just visualization. If you have any questions or suggestions please contact me. Also, if you attempt this project yourself I’d love to post your results! Good luck! Background You’ve probably seen somebody in a hospital setting hooked up to a big mess of wires used to analyze their heartbeat.

The goal of such a machine (called an electrocardiograph, or ECG) is to amplify, measure, and record the natural electrical potential created by the heart. ECG/EMG signal transmission to labview using arduino + xbee. DIY Muscle Sensor / EMG Circuit for a Microcontroller. Measuring muscle activation via electric potential, referred to as electromyography (EMG) , has traditionally been used for medical research and diagnosis of neuromuscular disorders.

DIY Muscle Sensor / EMG Circuit for a Microcontroller

However, with the advent of ever shrinking yet more powerful microcontrollers and integrated circuits, EMG circuits and sensors have found their way into prosthetics, robotics and other control systems. Yet, EMG systems remain expensive and mostly outside the grasp of modern hobbyist. This instructable will teach you how to make your own muscle sensor / EMG circuit to incorporate into your next project. Use it to control video games, robot arms, exoskeletons, etc. Click on the video below for a demonstrations on how to hook up and use your EMG circuit board! You can now also purchase EMG sensors, kits, cables and electrodes at!