urn:uuid:214d0e4e-f1b1-d287-ce26-ac5b4c9f8249 2017-07-14T11:03:59-06:00 SparkFun Electronics bboyho urn:uuid:37c3182d-e7d5-779d-5ba2-8f71e0981400 2017-04-21T18:19:29-06:00 <p>I am not sure if you have resolved the issue but did you try adjusting the gain? Try looking at my troubleshooting comment here => <a href="https://learn.sparkfun.com/tutorials/myoware-muscle-sensor-kit/discuss#comment-58dd3817f3b1a87e608b4568" rel="nofollow" >https://learn.sparkfun.com/tutorials/myoware-muscle-sensor-kit/discuss#comment-58dd3817f3b1a87e608b4568 </a>.</p> Customer #890021 urn:uuid:a036158f-8645-4d4b-0d1d-d99ed13fa511 2017-01-21T10:11:19-07:00 <p>I bought this device along with the Myoware Cable Shield and my device is giving me incorrect readings. The red light to say that the &ldquo;Muscle is contracting&rdquo; is constantly on! Does anyone know why this is happening?</p> Customer #875407 urn:uuid:7965460f-ff12-c9ed-c3a7-db70d29541e9 2016-12-06T19:50:36-07:00 <p>Is the isolation amplifier necessary if the USB port is plugged into a computer that is not connected to the power grid?</p> Advancer urn:uuid:8af74586-947e-035f-b785-f19bd56b3d70 2016-04-29T12:53:57-06:00 <p>Customers have used the MyoWare to measure vocal cord activation. You might want to double check your setup. Feel free to email us at support@advancer.co if you need help troubleshooting.</p> Customer #492118 urn:uuid:77268918-dcd3-cbd9-1c09-87b8b58cd94d 2016-04-27T09:13:57-06:00 <p>The sensor accompanies the Biomedical Sensor Pad?</p> Customer #798791 urn:uuid:8f5f8083-8297-1ebe-3e9f-400ca6c019cd 2016-04-20T06:23:04-06:00 <p>i bought this kit from one week ago to read subvocal signal (signal from throat ) but it didn&rsquo;t sense any signal from my throat . any idea,</p> Advancer urn:uuid:d31e1bea-5954-0127-ec87-278b231bc162 2016-04-19T08:51:53-06:00 <p>The reference electrode can be attached areas other than a bony area. It simply needs to be attached to an area that is adjacent to the muscle you are trying to measure. The function of this electrode is to align the sensor&rsquo;s ground state with the ground state of the user&rsquo;s body. Yes, a bony area is ideal because it does not produce electrical signals but it is by no means strictly required. For example, the sensor will work perfectly fine for the bicep if you place it along the inside of the user&rsquo;s arm between the bicep and tricep.</p> Customer #796185 urn:uuid:9734be1b-36df-59af-b0b0-b809c1e89f7b 2016-04-14T14:01:01-06:00 <p>One complaint is that the connector that is supposed to be attached to the user&rsquo;s bony area is way too short. There is not a good bony area that close to a large muscle (such as the bicep).</p> Advancer urn:uuid:f6cb910d-ef51-a6d3-e447-237db304cb69 2016-04-14T07:52:26-06:00 <p>Most of the filtering comes from the high CMRR of the AD8236 which will remove most noise artifacts common to both input electrodes such as the dreaded 50/60Hz electrical &ldquo;hum&rdquo;. Other than that there is a high pass filter that is used to remove DC offsets that can be present due to electrode polarization and skin dielectric characteristics. This HPF has a cutoff frequency of 0.33Hz. The EMG envelope output (SIG) has an integration circuit that has a cutoff frequency of 2Hz. (note: the Raw EMG output (RAW) does not go through this portion of the circuitry.)</p> joclip urn:uuid:9ebc368c-3633-9e7f-b196-5df96a3fc3c0 2016-03-23T23:03:39-06:00 <p>Do you happen to know what the frequency range is and where the rolloff/cutoff points are set at?</p>