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A simple transmitter / reciever help

G

Gavin

Jan 1, 1970
0
Hello All,

I'm bored at the moment so I have thought up a little project that
could be interesting for me.

Any way, I have noticed that My gf and I are always leaving the
bathroom light on all day so, I have devised a fiendish device that
will transmit a signal via radio to a receiver next to the front door
and show an LED when the light is on.

Sounds easy, but I have not got a clue where I can get radio
transmitter / recover that will do what I need. Do any of you know?

I've kind of got the circuit that I need in my head and was hoping to
just have a relay of sort to tell the transmitter to send. Once done
the receiver will switch on show the light. When the light is off the
transmitter will fire again and switch the LED off.

Any help will be appreciated.
Gavin
 
Q

Quack

Jan 1, 1970
0
I've kind of got the circuit that I need in my head and was hoping to
just have a relay of sort to tell the transmitter to send. Once done
the receiver will switch on show the light. When the light is off the
transmitter will fire again and switch the LED off.

I'd tackle it a bit differently.

The receiver would be setup to light its LED while receiving a signal
only - if the signal disappears, led goes off.

The transmitter would be setup to send the signal full-time, no matter
what - but only while it has power of course, so just wire its power
supply in with the bathroom light.

Im not sure of the cheapest solution here ..

but i have a few parallax wireless serial transeivers and basic stamps
lying around which i would probably use if i was gonna do it. (not
cheap though).
And then it would need to 'poll' because there is no 'connection
state'.

Alex.
 
G

Glenn Gundlach

Jan 1, 1970
0
Hello All,

I'm bored at the moment so I have thought up a little project that
could be interesting for me.

Any way, I have noticed that My gf and I are always leaving the
bathroom light on all day so, I have devised a fiendish device that
will transmit a signal via radio to a receiver next to the front door
and show an LED when the light is on.

Sounds easy, but I have not got a clue where I can get radio
transmitter / recover that will do what I need. Do any of you know?

I've kind of got the circuit that I need in my head and was hoping to
just have a relay of sort to tell the transmitter to send. Once done
the receiver will switch on show the light. When the light is off the
transmitter will fire again and switch the LED off.

Any help will be appreciated.
Gavin

Since I don't want people coming to my door to know the status of my
bathroom light (or asking what the light is about), I simply have a
switch that senses people in the bathroom and turns off the light
itself. Works great with a 4 year old and is $15. Sorry. I tend to
change the game.
GG
 
J

Jerry Greenberg

Jan 1, 1970
0
Why not install a proximaty switch in the bathroom, with about a 10
mminute delay, so that there will be no false shutoffs? When the
person leaves, the light will go out after 10 minutes.

Jerry Greenberg
http://www.zoom-one.com
 
M

Matthew Snape

Jan 1, 1970
0
Sounds easy, but I have not got a clue where I can get radio
transmitter / recover that will do what I need. Do any of you know?

Have you considered using an RF solutions transmitter and reciver
pair. They are single modules that use the licence free (at least in
EU) 433Mhz band and are designed to work together so no tuning. They
also make a load of interface chips that send up to 15 states. I have
used them before and all they need is an aerial and an encoder chip.

datasheets at http://www.rfsolutions.co.uk/special_offers/special_offers.htm
 
H

HaCv

Jan 1, 1970
0
Have you considered using an RF solutions transmitter and reciver
pair. They are single modules that use the licence free (at least in
EU) 433Mhz band and are designed to work together so no tuning. They
also make a load of interface chips that send up to 15 states. I have
used them before and all they need is an aerial and an encoder chip.

datasheets at http://www.rfsolutions.co.uk/special_offers/special_offers.htm



There are good rf solutions from www.linxtechnologies.com, very simple to operate
 
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