Building a wearable camera | Hacker News Reader

Building a wearable camera

manoj.ninja

54 pointsmostlystatic22 comments

Two things: You can pipe the GPS right into the serial port on the raspberry pi, making the whole thing smaller.

Your GPS is an accurate time source, and assuming it has a backup battery, or at least the sight of one satellite it can spit out a timestamp that you can feed into NTP:

http://www.satsignal.eu/ntp/Raspberry-Pi-NTP.html

An interesting thing I learnt about GPS hacking was that it’s either 100% absolutely accurate or throws you somewhere in the middle of Morocco.

Imagine trying to debug this if you lived in the middle of Morocco.

Well in that case it is either 100% absolutely accurate or throws you somewhere in the middle of Morocco.

Any ideas on what kind of powerbank / battery to couple a RPi with for some outdoor action? A friend at work did some tests with his powerbank and his Pi2 was burning through it pretty quickly, and I don't suppose Pi3 will be any better.

Also, I love the sewing electronics into the backpack part :).

haha thanks! I lazily just used a Anker power bank: https://www.amazon.co.uk/dp/B00D5T3QK4

For power efficiency stuff, check this out: http://www.jeffgeerling.com/blogs/jeff-geerling/raspberry-pi...

Thanks for the links! I guess I need to get myself a decent power bank (or make one out of all those li-polys I came back with from China). I see people recommend Anker all over HN (and Reddit, in particular Ingress players seem to like it, and that says something) - I'll probably shell out for one of those, as I don't trust any of the locally available brands (and I definitely don't trust any consumer product from Aliexpress (components are fine though)).

How long until it was drained?

I am saddened that we live in a time where people surreptitiously photograph others in public without any thought to ethics. I know it's legal and people should have no expectation of privacy in public but it's tragic to see this gradual erosion of common-courtesy privacy.

Completely disagree with this. How is this unethical? The people in his photos just so happens to be there, it's no different than you taking a photo of your friend in a crowded area.

If the government feels like they have the rights to mass surveillance, I think we should also have the same rights to personal surveillance.

From an emotional standpoint I see why this would be an issue (everything you do in public being recorded forever is a bit intimidating) but from a logical/philosophical standpoint, how is this different from someone with a photographic memory? Is it that the images can be shared?

I would say that that is indeed the key difference.

There are definite upsides though. For example people can't get away with illegal behavior so easily. There's an interesting fiction book called "The Circle" that explores the consequences of having cameras absolutely everywhere.

Interesting! I googled it and it seems like they're making a movie about it. Can't wait.

Did something similar to this with a raspberry pi, a pair of 70's ray ban bullet hole shooter glasses and a spy cam a few years back. Just got a cam that let me ditch the pi, slim it down to a Google glass type size, and stream the video to a smartphone

Neat! Did you have any problems putting the bag through x-ray machines at airports?

It wasn't too hard. The pi was disconnected and put in my camera bag in the black case, so to the average person - it was just some sort of camera gadget :P

No issues with the ribbon cable embedded in my bag either!

Yeah, the ribbon cable was what I thought would give you grief. Glad to hear it didn't :-)

The new Zero and upgraded camera could be very useful for this: https://www.raspberrypi.org/blog/zero-grows-camera-connector

The first thing he did with that contraption is go to the airport?! Ballsy.

It's where most holidays start :P

INNNOVATION!!

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