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you weren't joking when you said GIANT. Couldn't he have made it the size of an ipod/fitbit or something.

I'm only guessing, but I think the reason it's soo big is because they want it to be "DIY" and a bluetooth-module and wireless-recharging module cannot be made much smaller, not to forget that thing also needs to have a battery that can hold out long enough!

Wireless charging, perhaps, but I have a bluetooth module with embedded CPU and GPIO pins that's not much larger than 2x2cm.

I'm pretty sure the reason for the size is aesthetics, rather than requirement.

Does the GPIO include analog? If so, can you link me :D

http://www.ti.com/product/cc2540

12-bit ADC onboard. Also two serial (SPI/UART) and an AES module.

Microcontrollers pack so much in these days.

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