Sensors to add to buy page

[Zeph]

@hek
I don't know about the traffic jam thing - do you have any reference? I'm wondering if that's based on low power radios along the highway reporting local conditions, vs wide area FM broadcast RDS. If it's the former, you might have to drive your sensors around to get local traffic jam info from various places (or live next to the highway that matters). :-) But I'm only guessing.

As for time, according to the paper linked at the bottom of my last msg, RDS content can include real time info with about 100ms accuracy - and the paper itself was about a method of getting more precise incremental timing from the RDS packet timing (there's an IRQ on that chip at the end of a RDS packet and apparently they found the timing on that to be precise).

[hek]

Or we could try receiving DCF77 signal :)

http://thijs.elenbaas.net/2012/04/arduino-dcf77-radio-clock-receiver-signal/

Other radio clock signals:
http://en.wikipedia.org/wiki/Radio_clock

[Damme]

Or GPS for a very accurate time :)

[Yveaux]

What's wrong with NTP guys?

[hek]

@Yveaux

Why make it simple when you can build something complicated?

[Yveaux]

@hek ;-)

https://www.youtube.com/watch?v=F4G74kprBK8

[hek]

@Yveaux

A few of those was really good ;)
I must start sticking remotes to my head.

[epierre]

@hek a sensor I'll explain the use later... quite sensible...

http://www.dfrobot.com/wiki/index.php/Analog_Grayscale_Sensor_V2_SKU:DFR0022

[hek]

@epierre said:

I'll explain the use later...

Curious on how this could be useful!

[Yveaux]

@hek said:

Curious on how this could be useful!

I think he got inspired by my YouTube video and wants to create a line-following temperature sensor ;-)

[epierre]

@Yveaux haem no... this is my quest of the gas meter reading... this is the cheap, there is the cheapest, and the expensive (raspi+cam+tesseract)...