On: Pebble goes off wrist with Core, dedicated running...

[whamlastxmas]

Core is not extensible at all in terms of adding hardware to it. I don't see many people using Pi with only GPS and cell data and accelerometer and not connected to anything else.

[lsiebert → whamlastxmas]

Bluetooth lets you connect additional devices, so I think that's covered.

edit: and it has a special hardware port you can use as well.