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by Ianw
Sat Jan 07, 2012 8:22 am
Forum: Other projects
Topic: Controlling a mains power socket switch? (home automation)
Replies: 174
Views: 60640

Re: Controlling a mains power socket switch? (home automation)

Deleted - problem with formatting
by Ianw
Sat Jan 07, 2012 8:11 am
Forum: Other projects
Topic: Controlling a mains power socket switch? (home automation)
Replies: 174
Views: 60640

Re: Controlling a mains power socket switch? (home automation)

<r><br/> // ########################################<br/> // # RF HOME AUTOMATION TEST SOFTWARE<br/> // # FTDI USB Serial Power Control for Raspberry Pi and Arduino #<br/> // # Raspbery PI CGI and PHP For Apache to follow<br/> // #  06/01/2012 Ian Williams                                            ...
by Ianw
Thu Jan 05, 2012 11:59 pm
Forum: Other projects
Topic: Raspberry PI with an arduino...
Replies: 26
Views: 16540

Re: Raspberry PI with an arduino...

<r>I have used Arduino connected to a FriendlyARM ARM7 board (firewalled and SSL enabled web server) running over the FTDI using serial commands and can report it works very well. Theres no reason that RasPi and debian also wont work well - worst case is some of the libraries might need a native com...
by Ianw
Thu Jan 05, 2012 10:02 pm
Forum: Other projects
Topic: Controlling a mains power socket switch? (home automation)
Replies: 174
Views: 60640

Re: Controlling a mains power socket switch? (home automation)

<r>Another link on the Arduino RF side of things that covers the codes/protocols/Hardware used.<br/> <br/> Should be able to use alot of this info for the RPi implementation.<br/> <br/> <URL url="http://www.arduino.cc/cgi-bin/.....1216065789">http://www.arduino.cc/cgi-bin/.....1216065789</URL><br/> ...
by Ianw
Thu Jan 05, 2012 9:22 pm
Forum: Other projects
Topic: Controlling a mains power socket switch? (home automation)
Replies: 174
Views: 60640

Re: Controlling a mains power socket switch? (home automation)

<t>WiFi is the same in the UK except we are missing channel 14 so dont really see any issues in that dept, the protocols are identical just officially missing the top channel(14):<br/> <br/> http://www.radio-electronics.c.....dwidth.php<br/> <br/> Will have to take a look at my current thermostat to...
by Ianw
Thu Jan 05, 2012 8:14 pm
Forum: Other projects
Topic: Controlling a mains power socket switch? (home automation)
Replies: 174
Views: 60640

Re: Controlling a mains power socket switch? (home automation)

<t>Looks good, has it saved much on the energy bills? The other problem is we're on 220v in the UK so that particular model might have a few problems this side of the pond :-p but as for the learning thermostat our house is pretty much the same so can see the pitfalls there already and would be inte...
by Ianw
Thu Jan 05, 2012 7:38 pm
Forum: Other projects
Topic: Controlling a mains power socket switch? (home automation)
Replies: 174
Views: 60640

Re: Controlling a mains power socket switch? (home automation)

<t>The RF board I am currently using can run on 3-12V @ 20ma , the more V the more range. At the moment I have tested it at 5V 20ma and its good for 30M in the house so should be more than enough for most uses. The only real concern is limiting the range so it doesn't trigger all the remote sockets ...
by Ianw
Thu Jan 05, 2012 6:33 pm
Forum: Other projects
Topic: Controlling a mains power socket switch? (home automation)
Replies: 174
Views: 60640

Re: Controlling a mains power socket switch? (home automation)

<r>For Thermostat control I wonder how easy it would be to integrate this little gem into the setup? :-<br/> <br/> <URL url="http://www.nest.com/">http://www.nest.com/</URL><br/> <br/> A WIFI AI Enabled thermostat! - Had a nice smile when I read about this one as alot of people here have been asking...
by Ianw
Thu Jan 05, 2012 5:30 pm
Forum: Other projects
Topic: Controlling a mains power socket switch? (home automation)
Replies: 174
Views: 60640

Re: Controlling a mains power socket switch? (home automation)

<t>sylvan said: <br/> <br/> <br/> <br/> RaspberryPI looks ideal as the web server logic control element for this kind of setup.<br/> <br/> <br/> That"s awesome!  I"m thinking the R-Pi would be able to replace both the FriendlyARM and the Arduino in your setup.  <br/> <br/> <br/> Thats the plan – bas...
by Ianw
Thu Jan 05, 2012 4:55 pm
Forum: Other projects
Topic: Controlling a mains power socket switch? (home automation)
Replies: 174
Views: 60640

Re: Controlling a mains power socket switch? (home automation)

<t>Bradburts said: <br/> <br/> <br/> Yes plz, do post more!<br/> <br/> (being lazy) I guess that the 433 Mhz transmitter board is SPI?<br/> <br/> Should be fairly easy to port that library to the RPI. Would have thought that direct connection to the Pi should be possible.<br/> <br/> Great project to...
by Ianw
Thu Jan 05, 2012 4:46 pm
Forum: Other projects
Topic: Controlling a mains power socket switch? (home automation)
Replies: 174
Views: 60640

Re: Controlling a mains power socket switch? (home automation)

<r><URL url="http://www.geeetech.com/433mhz.....p-160.html">http://www.geeetech.com/433mhz.....p-160.html</URL><br/> <br/> The RF TX device is similar to this one although depending on the modulation etc its best to  research the setup/requirements for the sockets your using – theres quite a bit of ...
by Ianw
Thu Jan 05, 2012 4:05 pm
Forum: Other projects
Topic: Controlling a mains power socket switch? (home automation)
Replies: 174
Views: 60640

Re: Controlling a mains power socket switch? (home automation)

<r>Going back to the subject of remote control power sockets, I have got Arduino to control 16 of them (STATUS sockets from Morrisons) using a 433 Mhz transmitter board (about £10 from ebay) and an ARM 7 Debian based web server (FriendlyARM 6410) to send serial to the Arduino over USB to trigger on/...
by Ianw
Tue Dec 27, 2011 9:10 pm
Forum: Other projects
Topic: Controlling a mains power socket switch? (home automation)
Replies: 174
Views: 60640

Re: Controlling a mains power socket switch? (home automation)

<t>Lol sorry Brad, was posted towards Johnny and the boiler Personally wouldnt use that relay as it is for such a load yet alone plop 2000w +/- @230V +/- in an ice cream tub with a £10 unisolated, unfused, unearthed non CE/BS compliant untested and non-manufacturer approved relay board and a bodged ...
by Ianw
Tue Dec 27, 2011 12:57 pm
Forum: Other projects
Topic: Controlling a mains power socket switch? (home automation)
Replies: 174
Views: 60640

Re: Controlling a mains power socket switch? (home automation)

<t>Doesn’t look like there’s any kind of adequate Isolation on that board and would have thought 13A would be a minimum? (plus about another 100 reasons why its unsafe – not going to troll or be condescending but that thing looks like a fire/electrocution in the making)<br/> <br/> Be aware that alte...
by Ianw
Sun Dec 25, 2011 8:06 pm
Forum: Other projects
Topic: Controlling a mains power socket switch? (home automation)
Replies: 174
Views: 60640

Re: Controlling a mains power socket switch? (home automation)

<r>Basically my present set-up uses an embedded micro controller to supply 5v triggers to a bank of opto-isolators interfacing the on/off buttons on the remote of an off-the-shelf remote control power socket.<br/> <br/> The Micro controller listens for triggers on a serial connection and then trigge...
by Ianw
Sun Dec 25, 2011 5:38 pm
Forum: Other projects
Topic: Controlling a mains power socket switch? (home automation)
Replies: 174
Views: 60640

Re: Controlling a mains power socket switch? (home automation)

<t>Thanks Bradburts!<br/> <br/> For the AC I would most probably use RF to run some off the shelf remote light sockets, eg, make a simple circuit to emulate the remote electronics. I bought a few from ASDA (something like £5 for two socket adaptors with the remote) and just wired the arduino to the ...
by Ianw
Sun Dec 25, 2011 2:04 pm
Forum: Other projects
Topic: Controlling a mains power socket switch? (home automation)
Replies: 174
Views: 60640

Re: Controlling a mains power socket switch? (home automation)

<t>Thanks for the info on SSR's, Only reason I asked is I bought a 25A SSR to control our boiler heating switch with a Dallas 1-wire Thermistor on Arduino to act as a web-based/automatic home heating controller and was a bit concerned there was an issue there lol!<br/> <br/> Once the Raspberry is re...
by Ianw
Sun Dec 25, 2011 11:34 am
Forum: Other projects
Topic: Controlling a mains power socket switch? (home automation)
Replies: 174
Views: 60640

Re: Controlling a mains power socket switch? (home automation)

Hi! Really got to ask, I have a full data-center HVAC power control system based on Solid state relays plus the home aircon system/boiler is switched by them (as supplied by the manuf)!… err, why are they a problem? given the bounce and arc from mechanical relays?
by Ianw
Sun Dec 25, 2011 11:24 am
Forum: Other projects
Topic: Controlling a mains power socket switch? (home automation)
Replies: 174
Views: 60640

Re: Controlling a mains power socket switch? (home automation)

<t>Ps. Forgot to mention an Optoisolator is like a small On/Off switch which has the additional benefit of isolating one circuit from another! (solid state relays typically consist of an optoisolator on the low voltage side and a TRIAC base circuit on the Mains side.<br/> <br/> If you must use relay...
by Ianw
Sun Dec 25, 2011 11:10 am
Forum: Other projects
Topic: Controlling a mains power socket switch? (home automation)
Replies: 174
Views: 60640

Re: Controlling a mains power socket switch? (home automation)

<t>One of the easiest ways to safely control AC Voltage with a computer is to buy a couple of remote control plug sockets from a supermarket (typically £5-£10). Then take the remote and replace the remote buttons with opto-isolators. The opto's can be switched on or off in the same way an LED works ...

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