Wristband sensor
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Stuart Langridge
Dec 29, 2008, 4:59:08 AM12/29/08
to Open Prosthetics
I'm exploring the initial stages of an idea for a new input device.
Essentially, the device would be a wristband containing sensors of
some description, where the sensors pick up movements in the wrist
corresponding to finger movement (basically creating a chording
keyboard where the user only has to wear a wristband). While my
primary use-case isn't prosthetics, your group obviously has some
experience with myoelectric sensing in this sort of project! Has there
been further progress since the experimentation documented at
http://openprosthetics.org/myoelectric? I'm currently trying to decide
which kinds of sensors would be most appropriate.
Stuart
Essentially, the device would be a wristband containing sensors of
some description, where the sensors pick up movements in the wrist
corresponding to finger movement (basically creating a chording
keyboard where the user only has to wear a wristband). While my
primary use-case isn't prosthetics, your group obviously has some
experience with myoelectric sensing in this sort of project! Has there
been further progress since the experimentation documented at
http://openprosthetics.org/myoelectric? I'm currently trying to decide
which kinds of sensors would be most appropriate.
Stuart
ARVash
Jan 4, 2009, 12:44:57 AM1/4/09
to Open Prosthetics
In the electric impedance tomography; really you're just detecting the
difference in voltage around the arm. You can use pennies for
electrodes.
http://www.eng.utah.edu/~jnguyen/ecg/instructions.html
According to this you can use lotion to make the electrodes have
clearer readings. I know this article is about the EKG, but it really
directly relates to what you're working on. If you're prototyping I
really suggest using the arduino; its easy and versatile, and should
have enough processing power to handle the job. Not to mention it's
like 30 bucks.
Keep in mind that expensive doesn't necessarily make something better;
this should be really really cheap :). Post pictures and or schematic
when you're done :).
On Dec 29 2008, 4:59 am, Stuart Langridge <s...@kryogenix.org> wrote:
> I'm exploring the initial stages of an idea for a new input device.
> Essentially, the device would be a wristband containing sensors of
> some description, where the sensors pick up movements in the wrist
> corresponding to finger movement (basically creating a chording
> keyboard where the user only has to wear a wristband). While my
> primary use-case isn't prosthetics, your group obviously has some
> experience with myoelectric sensing in this sort of project! Has there
> been further progress since the experimentation documented athttp://openprosthetics.org/myoelectric?I'm currently trying to decide
difference in voltage around the arm. You can use pennies for
electrodes.
http://www.eng.utah.edu/~jnguyen/ecg/instructions.html
According to this you can use lotion to make the electrodes have
clearer readings. I know this article is about the EKG, but it really
directly relates to what you're working on. If you're prototyping I
really suggest using the arduino; its easy and versatile, and should
have enough processing power to handle the job. Not to mention it's
like 30 bucks.
Keep in mind that expensive doesn't necessarily make something better;
this should be really really cheap :). Post pictures and or schematic
when you're done :).
On Dec 29 2008, 4:59 am, Stuart Langridge <s...@kryogenix.org> wrote:
> I'm exploring the initial stages of an idea for a new input device.
> Essentially, the device would be a wristband containing sensors of
> some description, where the sensors pick up movements in the wrist
> corresponding to finger movement (basically creating a chording
> keyboard where the user only has to wear a wristband). While my
> primary use-case isn't prosthetics, your group obviously has some
> experience with myoelectric sensing in this sort of project! Has there
Vik Olliver
Jan 4, 2009, 3:34:21 PM1/4/09
to ARVash, Open Prosthetics
On 04/01/09 ARVash wrote:
> According to this you can use lotion to make the electrodes have
> clearer readings. I know this article is about the EKG, but it really
> directly relates to what you're working on. If you're prototyping I
> really suggest using the arduino; its easy and versatile, and should
> have enough processing power to handle the job. Not to mention it's
> like 30 bucks.
> According to this you can use lotion to make the electrodes have
> clearer readings. I know this article is about the EKG, but it really
> directly relates to what you're working on. If you're prototyping I
> really suggest using the arduino; its easy and versatile, and should
> have enough processing power to handle the job. Not to mention it's
> like 30 bucks.
Might I point out the Sanguino. Slightly smaller and cheaper than the
Arduino but yet compatible with it and with 4x the memory:
Open Source, of course.
Vik :v)
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