Ask Electronics

3327 readers

13 users here now

For questions about component-level electronic circuits, tools and equipment.

Rules

1: Be nice.

2: Be on-topic (eg: Electronic, not electrical).

3: No commercial stuff, buying, selling or valuations.

4: Be safe.

founded 1 year ago

MODERATORS

[email protected]

Linux capable chip with really low power consumption? (self.askelectronics)

submitted 9 months ago by AI_toothbrush to c/[email protected]

11 comments fedilink hide all child comments

I want to build a linux(yes i want linux specifically or a deritive of it) smartwatch as a prototype that lasts ~24 hours. Ive been looking for chips that are small and power effient enough but most of them cant run linux. If i have a 400mah battery that gives me a power budget of about 60mw... I know its possibly because there are wearos(basically android) watches that last 3-4 days. I dont know what kind of sorcery that is but that means it consumes about 15mw??? I really do feel like im miscalculating something but i checked multiple times. Do they hibernate linux/android and run it off of another chip. I also dont know how to excecute that properly and its kind of off topic of my question. So point is linux on a ~60mw budget in s smartwatch. I want to use a mip display as i really like the look and it uses little power but if ever want a heart rate sensor in it thats even more power consumpotion. Thanks in advance i guess if a saint answers this shitstorm of a question.

you are viewing a single comment's thread
view the rest of the comments

[–] [email protected] 5 points 9 months ago (1 children)

Have a look at this.
https://pine64eu.com/product/pinetime-smartwatch-sealed/

You can see the specs and get the idea of what you might need

[–] AI_toothbrush 0 points 9 months ago (1 children)

Yeah its a good starting point but it doesnt quite run linux. If i ever manage to get the linux part working i can just copy the rest from pinetime.

[–] [email protected] 5 points 9 months ago

He didn't say use the smartwatch itself. He said look at the specs for what hardware you can use for your own smartwatch

PLATFORM:

SoC: NORDIC Semiconductor nRF52832

CPU: 64MHz ARM Cortex-M4F