On: Ask HN: Is there a fitness wristband that is hackable?

[LordAragorn]

A few years back, I played around with TI's EZ430-Chronos: http://processors.wiki.ti.com/index.php/EZ430-Chronos?DCMP=C... It's not sleek like modern fitness bands/watches but is hackable.

TI has more Smart Watch components and reference designs here: http://www.ti.com/solution/smart-watch

[TeMPOraL → LordAragorn]

Chronos is cool, and definitely hacker-friendly, but it's not a proper fitness watch per se - it's just a demonstration TI made for their CC430 chips. Doesn't have much computational power or sensors onboard, but it features an 433/868/915 MHz radio (frequency depends on the model you pick) - and I mean actual, hackable radio - and it lasts forever on a coin cell.

I had lots of fun tinkering with it, but it's not really what the OP is looking for.

[zokier → LordAragorn]

Chronos is neat, but it isn't really fitness oriented and notably it doesn't have any of the sensors OP wanted (GPS, heart rate, gyro)

[kuon → LordAragorn]

The Chronos looks like a sci-fi watch. I like it, but it lacks what I want for fitness.