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Messages - valent

Pages: 1 2 3 [4] 5 6 ... 26
46
Feature requests & roadmap / Re: Android@Home - something to watch
« on: June 05, 2011, 10:12:50 pm »
"Please Google, destroy Zigbee. Zigbee 1.0 was patented and not GPL compatible. Zigbee 2.0 picks up open 6lowpan and then patents the application layer again closing it.
Please give us an equivalent to the Smart Energy application layer free of patents."

excellent comment and great article from here:
http://www.smartgridnews.com/artman/publish/Business_Strategy/Will-Google-destroy-ZigBee-3681.html

But I still didn't see anything from Google but their marketing stunt at Google IO. AFAIK there is no spec released, no licence under which it will be under... if anybody has more info please point me in the right direction.

47
Users / Re: New power controller: Tellstick
« on: May 31, 2011, 10:51:50 am »
I've had my TellStick controlling 10 lights and one power amplifier for  three months now and so far it works as expected; no negative effects on LMCE observed.

I have one design question: My power amplifier has no remote control options what so ever (classic valve amplifier). I tried to have a device hierarchy with TellStick - Nexa switch - power amplifier. My idea was to have On/Off commands implemented on the power amplifier, these would be sent to the parent. The parent would catch the comands and resend them to it's parent. Since I didn't get this to work properly I' just wondering if I was on the right track or if there is another way of implementing this kind of hierarchical device structure.


/Joakim

Nice to hear that Tellstick and receptors work nice with LinuxMCE.

But where do you buy Tellstick compatible gear from in Europe and/or USA? I looked at Tellstick page and most links I checked don't have (or I couldn't fins them) Tellstick compatible gear on their pages [1], and search also finds nothing on their pages.

I found some compatible gear on this page [2] but there is no webshop and no prices for any of that equipment?!?

So please share links to some web shops that sell Tellstick compatible equipment and I'll add it to WIKI for future reference.

Cheers,
Valent.

[1] http://www.telldus.se/products/compability
[2] http://www.nexa.se/FjarrstrombrytareCodeswitch.htm

48
Developers / Re: GuruPlug
« on: May 31, 2011, 10:23:20 am »
Guys have you seen RaspberryPi: http://www.raspberrypi.org/ ?
This thing id dirt cheap (25$), and my guess is that it would run ARM version of Fedora and LinuxMCE.

50
Feature requests & roadmap / Re: Android@Home - something to watch
« on: May 25, 2011, 09:31:32 pm »
After watching google io video regarding android@home [1] first thing I thought is why google have to go and create yet another HA protocol, why didn't they use some existing one like z-wave, enocean or insteon?

But on a second look it is obvious why - all of them are proprietary closed protocols and probably protected IP with patents.

My knee jerk reaction to hearing that google has stepped into HA field was negative one because I thout that it would hurt LinuxMCE project but the more I think about Android@Home it looks better and better.

What are you thoughts regarding Android@Home and in general regarding HA protocols?

[1] http://www.youtube.com/watch?v=zD3Q4kJhD5w

51
Users / Re: [security] z-wave replay attack
« on: May 25, 2011, 09:06:23 pm »
I agree, wired closed loop is best thing for HA security. Has anybody payed attention to new zwave chips and that they claim to have builtin encryption? Will new gear backward compatible or will ne need to have all new zwave devices that support encryption?

52
Users / Re: [security] z-wave replay attack
« on: May 24, 2011, 12:38:58 am »
yes, a replay attack is feasible. Another option would be to sniff the id of the network and program a controller to use the same one (e.g. with the skd/szniffer). But hey, we talk about light control and such..

Z-wave door locks use the encryption command class (iirc with AES encryption) to prevent hacks like this.

br Hari

It is never nice to underestimate what can be done, I would prefer to have all zwave devices with encrypted data transmission. It would cost probably not so much more but give a peace of mind.

There are z-wave alarms, motion sensors and valves and that is not something I would like to have others be able to control with simple replay attacks.

Will new z-wave chips solve this as I read somewhere. Any news when will they be shipped?

53
Users / [security] z-wave replay attack
« on: May 22, 2011, 06:08:20 pm »
Hi guys,
was giving LinuxMCE talk on annual Croatian Linux Users Conference and was asked one z-wave security related question: How secure is Z-Wave and could if it is not encrypted is is possible to carry out an replay attack?

AFAIK current generation of z-wave devices doesn't encrypt data, and security model is similar to bluetooth - key exchange happens during device pairing or joining new devices to existing network, right? From what I have seen, soon new generation of z-wave chips will have encryption out of the box.

So if z-wave traffic is not encrypted is there any other security and protection mechanism in place to prevent z-wave replay attacks or not?

Is it possible and how would somebody who is malicious carry out an z-wave replay attack? Is it enough to watch the z-wave traffic and spot when some command is sent, record it any replay it when ever you wish?

That way somebody could take over control over any devices you have that use z-wave...

Thank you in advance for your replies.

54
Users / Re: GlobalCache WF2IR
« on: April 20, 2011, 05:20:47 pm »
Need to sort out delivery and how to avoid import duties... if you are in Eu it's easier to order and you will not get import duties. I know a guy in India how has them already and he says they work great so if you need something like this go for it!

55
Developers / Re: GuruPlug
« on: April 19, 2011, 02:52:46 pm »
GuruPlug looks like a great companion to LinuxMCE if you want to do only home automation without multimedia so this fits my home project.

Hari is it possible to install mini LinuxMCE on Tonidoplug (Sheevaplug) hardware also or not?

Are there any EU shops where from Guruplug can be bought from?

56
Developers / Re: Fedora 13 Packages
« on: April 13, 2011, 10:16:59 am »
Massive respect for making Fedora packages!!!

57
Developers / Re: LinuxMCE as dd-wrt variant?
« on: April 13, 2011, 10:02:40 am »
I have two years old ION Nettop that uses only 30W of power [1] and can play full hd blu-ray video via VDPAU.

There are some newer ION nettops that use around 20W of power [2] [3] so why not go with them? Prices are more than reasonable and they provide more than enough processing power for what you need them to do. Biggest benefit it that you can install stock LinuxMCE on them.

Running Asrock ION 24/7 with average power consumption around 25W costs me 20$ per year in Croatia and probably same for other European countries.

Hope this helps.


[1] http://wiki.linuxmce.org/index.php/AsRock_330_ION_HT
[2] http://en.wikipedia.org/wiki/Nettop
[3] http://wiki.linuxmce.org/index.php/Acer_Aspire_Revo_1600

58
Thank you for this great app, and I would gladly pay even if it wasn't free.

59
Users / Re: New wiki pages: Foscam FI8918W and WPA2 for WebDT 366
« on: April 13, 2011, 09:15:41 am »
I just ordered one from Dealextreme for 66$ + free shipping, after import duties it will cost me around 90$ also. I read comments on Dealextreme page and last two guys that bought it few weeks ago had no problems with updating with Foscam firmware so I'm keeping my fingers crossed.

Cheers,
Valent.

60
Users / Control your LCD/LED TV via LinuxMCE
« on: April 12, 2011, 10:27:38 pm »
If you are building new LinuxMCE system and you want to control your TV there are few ways to do so.

Every tv can be controlled via IR remotes and devices like GlobalCache iTach IP2IR or GC-100.

Also LCD/LED tv can be controlled via serial rs232 and hdmi port. HDMI way is tricky and expensive so you are left with only using IR or RS232.

If you are buying new TV I urge you to buy LG tv because they have RS232 ports and most LG tv's have cheaper models that can be unlocked to have same high end features as much more expensive models (just google for lg firmware hacks).

There is also nice WIKI page for controlling LG tv's via serial RS232:
http://wiki.linuxmce.org/index.php/LG_Serial_Control_TVs

Any comments and further suggestions are welcome.

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