[Cyborg] Heart Spark!
matt.ho at gmail.com
Sat Dec 18 11:34:51 PST 2010
Congrats! This looks great!
On Dec 18, 2010, at 7:58 AM, Eric Boyd <mrericboyd at yahoo.com> wrote:
> The Heart Spark pendant is finally ready! I've been working on various
> versions of this thing for three months, and before that on various
> versions of the "pulse choker" for like a year. I am happy to finally
> have something to sell! It's been a super huge amount of fun making it,
> of course, and I've learned so much. Thanks especially to Chung-Hay for
> all the great hacking sessions at noisebridge, this project would never
> have begun without you. Thanks also to Leigh, Ewan and Liz for
> providing various forms of assistance at hacklab.
> Believe it or not the Heart Spark code is running up close to the limits
> of the Arduino (ATMEGA168) - there are 1300 lines of code, not including
> the libraries I use! About half of them are the logging stuff, it's
> quite complicated to get data into and out of the EEPROM in a way that
> makes it useful later. But a good chunk of the code is also having many
> different ways to blink the LEDs, and there is a lot of code that deals
> with keeping power usage low, since the pendant only has a coin cell
> providing energy... though much more work needs to happen on that front.
> I'm hoping to get a logging version for sale sometime late January. I
> interface so far, and also only "every heart beat" mode works right now
> (the other "average heart beat each minute" would let you log data for
> over a week before retrieving it, instead of needing to retrieve after 6
> Anyway, I'm happy to answer any questions you might have.
> p.s. Heart Spark made the makeblog!
> I'm kinda sad that they picked such a poor image from the wide selection
> that is available, but on the other hand that music video is pretty
> awesome, I am thinking that I should recreate it :-).
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> Cyborg at lists.noisebridge.net
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