Categories

Simple DIY EMG sensors

Posted on Tuesday, June 19th, 2012 in DIY, measurement, sensors by the machinegeek


Eric Schmiedl writes, “See the signals that make your muscles move… all it takes is an audio recorder and $10 worth of foil, coax, and duct tape. Oh, and some sugar syrup.” Eric constructed these DIY EMG sensors which he interfaced with an audio recorder to record his muscle activity.

“In my case, I wasn’t sleeping so well, and I wanted to figure out whether I was tossing and turning in bed as much as I thought I was. An EMG provides the means to figure out just when and how that was happening. But people use EMGs for all sorts of physical therapy and sports applications.

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 resulting WAV files (I can get over seven hours of recording on a 16GB SD card, just about enough to cover a whole night) are the EMG output, easy to analyze in any audio editor (I use Audacity).”

For for more information on constructing the sensors and screenshots of data displays, visit Eric’s ericdsc webpage.

Via the contact form.

This entry was posted on Tuesday, June 19th, 2012 at 3:00 pm and is filed under DIY, measurement, sensors. You can follow any responses to this entry through the RSS 2.0 feed. You can skip to the end and leave a response. Pinging is currently not allowed.

One Response to “Simple DIY EMG sensors”

  1. This is really great stuff. If you don’t want to spend the money on a pocket recorder, you can also download “Audacity” software free from “SourceForge”. This can be loaded onto your laptop to perform the recording function.

Leave a Reply

Notify me of followup comments via e-mail. You can also subscribe without commenting.

Recent Comments

  • Cyk: Well, this is an application that I'd solve with an Android smartphone. Used Moto G phones can be found on Ebay for ~€30, and thanks...
  • Noy: Yuuup
  • Vibhore: I'm waiting. *Fingers_crossed
  • KH: I guess this is a failed attempt at making a pass/fail cable tester out of discrete ICs. A single pass/fail LED is not that useful....
  • Max: Considering it only seems to test that all wires conduct, I'm not sure what exactly does this show you that 7 LEDs each powered through...