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October 24, 2011
Product COM-12723 |
Is it Washable? since this is “wearable” technology…. It would be great for real wearable tech so that one would only need to detach the amplifier…
Product WRL-11927 |
about a month ago
Awesome! one LAST question I promise!, will you carry the actual ble modules themselves (no breakout) available anytime? I see they’re from Cambridge and shipping to the America’s is quite expensive…
maybe this is a stretch but do you have the eagle file for people who want to develop their own circuits with this module?
is it a simple BLE module or does it have an embedded uC? like a 8051 or something similar?
Interesting product, looking forward to trying it out
Product SEN-11776 |
about a month ago
One problem I see in your good theory, is that motion artifact will probably ruin all your readings… Motion artifact for those who don’t know is the movement created by the electrodes/electrode leads when in motion or movement. you will not get accurate readings if any. Unless you decide to use a lot of tape around the cables (and that would still bring out a lot of noise).
use batteries instead of a wall plug to power it up, and do your tests away from other electronics connected to the wall… also try to do a digital 50Hz filter.
Depends…. look at the schematic, the filter/s is/are what determines the signal you’ll be receiving… for an EMG you would need this band-pass filter (2 stage + buffers) for your muscles, you would have to see at what frequency it is that the ocular muscles transmit the signals. The filter is set for a range of around 2Hz to 110Hz, if they fall under that range then you would be able to. But another thing you would need to consider is the location (probably around the bags of the eyes)….
Another thing to take into consideration is the last stage (trimpot) depending at what voltage level is the signal you’re trying to acquire you may need to change your trimpot for the gain…
Hope it helps
That is exactly the right answer… but you can never be 100% sure, and what of those who wanna modify this and make it commercial? they should be aware of the risks.
I’m not sure if your comment was sarcastic or not, but just in case it wasn’t. A human heart gets fibrillation with as little as 10 - 50 uV, What I meant is that all wall powered electronics are prone to voltage spikes, with or without bridge rectifiers. These spikes, since there is no protection circuit (diode rectifiers or an isolation chip) can be fed back to the user and cause fibrillation. like I said, as little as 10 - 50 uV can cause this [bioinstrumentation and signals, webster] don’t remember the actual page, this was when i was still in university (Biomedical and Electrical undergrad)
No public wish lists :(