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I want to fix another switch to the light in the bedroom for my mom so that she can switch off the light from her bed. I need a circuit which will work as follows:
switch on the wall => switch next to her => light
ON => ON => OFF
ON => OFF => ON
OFF => ON => ON
OFF => OFF => OFF
In other words, the light should switch on only if one of them is switched on and not both.
Any ideas?
Greetings: I would either suggest this.......
http://www.youcansave.com/clap.asp
Or this.......................
http://www.eecs.mit.edu/
Clap On.............Clap off.......................!!!!!
Just kidding man.
:p
I would think a remote control lighting system, there are many of them. You could more than likely figure out a less expensive way to install one.
lINK>>>>>>>>>>>>(EXAMPLE)
http://www.alectrosystems.com/lighting/remote.htm
Good Luck. :p
I don't know the english word.. it's called a 'hotel schakelaar' in dutch and a 'interrupteur va-et-vient' in french..
here's how it works.. http://www.zowerkt.nl/inenomhuis/ima...schakelaar.gif
http://www.zowerkt.nl/inenomhuis/ele...schakelaar.htm (DUTCH !!)
I think the image speaks for itself..
Quote:
Jinx as long as you accept that my 'hotel schakelaar' is bigger than yours I am ok with myself.
:D
<sigh>... i wish i could ;).Quote:
heh, but not in this lifetime.
the_jinx:
Thanks. Just what I was looking for. Looks like a little more work than I thought, but I think I can do it.
why not the normal 2-way switch?
basicly a pair of single pole double throw switches
http://www.diydoctor.org.uk/projects...d_switches.htm
scroll down to "Two Way Lighting".. there is the basic system..
Now you could make a control circuit from the basic building blocks.. the pattern here looks XOR
0 + 0 = 0
1 + 0 = 1
0 + 1 = 1
1 + 1 = 0
a single exclusive or-gate .. you can use a simple logic pack IC or build it out of transistors.. not that complex..
but the 2 spdt switches looks more reliable..
[Edit] JinXey has the original circuit.. I just didnt read the contents of his links untill now....
In the US, we use three-way switches to do what you are asking.
http://home.howstuffworks.com/three-way.htm
Okay, here's our points:
A-, B-, A+, B+, Lightbulb.
I think this should work... I have this light switch system all over my house.
Go from A-, to lightbulb, to B+, and run the other wire from B+ to Lightbulb, then B-.
Blah, that could be wrong, it's getting late, I'm sleepy... your local home depot fokes would without a doubt be able to tell you for sure.
what you need is two single-pole-double-throw switched, and then connect them agains each other...let me try to make an ascii diagram. or PM for further details :P
/ ---------------------------- \
a--------> <------------b
\ ---------------------------- /
basicaly, switches A and B are identical, they have one leg where the power comes in, and two states, either 1 or 2, so, it will either send power down path 1 or 2 depending of how the switch is set, this means that both switches A and B can control the light because they simply need to have the same setting (1->1 or 2->2), to turn the ligh of, simply flip a switch, and it will become 1->2 or 2->1 which will break the circuit.
This is atleast how we normaly did it.
EDIT: ASCII art sucked something cronic!! used \x0160 rather than \x0032 to fix it (I hope)
EDIT2: **** it, pm me if you want circuit diagrams...
Undies has it right. It's the classic 'staircase' scenario - one switch at the top of the stairs, one at the bottom. Both on == on, both off == on, one off one on == off.
If I had my old BEE notes I'd post the diagram - it's not too difficult to wire.
Hey hey! I did it. Took me the best of 4 hours to do it including getting the wires and stuff for it. Works great and I did it using the_jinx's 'hotel watchamacallit' pic. I'll see if i can post a pic later on. Looks terribly crude with a wire going across the room from the switchboard to the bedside, but atleast she won't have to get up and walk across the room to switch off the light.
Thanks guys.
/edit
Ive put the pics... but don't take me up on neatness ;). This is the first time I did something of the sort. The bed didn't show up, but it's right below the switch in the first pic.
http://geocities.com/alamuru420123/homepic1.jpg
http://geocities.com/alamuru420123/homepic2.jpg