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I want to build my own smartwatch with rasbipan, and i want to know if there exist raspberry pis or ardiunos small enough to fit on someones wrist.the biggesr issue for me is height.

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Yes, there are ;) - and 3D-printed parts are pretty light.

The limiting factor is the battery. The Raspberry Pi (no matter which model) draws too much power to be usable as a smartwatch with a light battery.

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  • That is so cool :) +1 – Seamus Dec 1 '18 at 18:33
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A slightly smaller smartwatch using a Pi Zero:

https://www.raspberrypi.org/forums/viewtopic.php?f=63&t=226470

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  • Oh yeah - that could go on my bike! +1 – Seamus Dec 1 '18 at 18:34

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