I'm rigging up some 12v solar powered lighting and would like to have
the lights come on when twilight falls, and stay on for an adjustable
length of time (between 10 minutes and 10 hours). Does anyone know
where I can obtain such a 12v switch (or switch circuit)? I need about
5 of them, so low cost would be an advantage.

Alternatively, a 12v switch (or switch circuit) that is triggered by
movement or the sound of a hand-clap, and remains on for an adjustable
length of time (between 10 minutes and 10 hours).

Thanks,

JD

JakeD wrote:
I'm rigging up some 12v solar powered lighting and would like to have
the lights come on when twilight falls, and stay on for an adjustable
length of time (between 10 minutes and 10 hours). Does anyone know
where I can obtain such a 12v switch (or switch circuit)? I need about
5 of them, so low cost would be an advantage.

Alternatively, a 12v switch (or switch circuit) that is triggered by
movement or the sound of a hand-clap, and remains on for an adjustable
length of time (between 10 minutes and 10 hours).

Thanks,

JD

Sounds like a suitable project for a PIC, give me more details and I
will see about programming a 12F or similar.

On Mon, 18 Feb 2008 18:46:22 +0000, James Salisbury
wrote:

Sounds like a suitable project for a PIC, give me more details and I
will see about programming a 12F or similar.

Hi James, Thanks you for the sugestion. I've decided that what would
work best for my application would be a clap switch (one that is
activated by the sound of a hand-clap or two hand-claps). I would like
the light to stay of for a while after the hand-clap (I'd like the
duration to be able to adjustjustable, via a potentiometer - from 10
minutes to 10 hours would be ideal). The switch would ideally be
powerd by 12v dc: same as the light. The power source is a 12v gel
cell battery. There are clap-switch kits around (for about £10) but
not with the timer feature, as far as I know.

There is a timer circuit on this page (designed for use with a PIR
switch) (the last circuit on the page):
http://www.reuk.co.uk/PIR-Sensor-Circuits.htm

Perhpas that circuit could be used with a clap switch circuit? The
ideal switch could also be reset to 'off' with another hand-clap (or
double-handclap).

I'm afraid my understanding of circuits is rather feeble. I have built
circuits from kits, but understanding how they work, when they involve
transistors or ICs is beyond me at present. I'm working on it though!

He's a c/d for a simple clap switch:
http://tinyurl.com/25zhrm
And another:
http://tinyurl.com/2fd4st
And another, more complicated one:
http://tinyurl.com/23ztbs
And an even more elaborate one:
http://tinyurl.com/2ebgfy

Regards,

JD

In message , JakeD
writes
On Mon, 18 Feb 2008 18:46:22 +0000, James Salisbury
wrote:

Sounds like a suitable project for a PIC, give me more details and I
will see about programming a 12F or similar.

Hi James, Thanks you for the sugestion. I've decided that what would
work best for my application would be a clap switch (one that is
activated by the sound of a hand-clap

Buddhist version ?

or two hand-claps

Hare Krishna version

). I would like
the light to stay of for a while after the hand-clap

I have one somewhere (that I designed for a stage magician) if I can
find it



--
geoff

JakeD wrote:
On Mon, 18 Feb 2008 18:46:22 +0000, James Salisbury
wrote:

Sounds like a suitable project for a PIC, give me more details and I
will see about programming a 12F or similar.

Hi James, Thanks you for the sugestion. I've decided that what would
work best for my application would be a clap switch (one that is
activated by the sound of a hand-clap or two hand-claps). I would like
the light to stay of for a while after the hand-clap (I'd like the
duration to be able to adjustjustable, via a potentiometer - from 10
minutes to 10 hours would be ideal). The switch would ideally be
powerd by 12v dc: same as the light. The power source is a 12v gel
cell battery. There are clap-switch kits around (for about £10) but
not with the timer feature, as far as I know.

There is a timer circuit on this page (designed for use with a PIR
switch) (the last circuit on the page):
http://www.reuk.co.uk/PIR-Sensor-Circuits.htm

Perhpas that circuit could be used with a clap switch circuit? The
ideal switch could also be reset to 'off' with another hand-clap (or
double-handclap).

I'm afraid my understanding of circuits is rather feeble. I have built
circuits from kits, but understanding how they work, when they involve
transistors or ICs is beyond me at present. I'm working on it though!

He's a c/d for a simple clap switch:
http://tinyurl.com/25zhrm
And another:
http://tinyurl.com/2fd4st
And another, more complicated one:
http://tinyurl.com/23ztbs
And an even more elaborate one:
http://tinyurl.com/2ebgfy

Regards,

JD


Have a look at www.farnell.com and order part 4390787 and some of part
9759034 and have a bit of a play. If you like to program in C have a
look at http://www.sourceboost.com/

Hi,

Might be a Velleman kit which does what you want (google).

cheers,
Pete.

On Wed, 20 Feb 2008 23:19:04 +0000, James Salisbury
wrote:


Have a look at www.farnell.com and order part 4390787 and some of part
9759034 and have a bit of a play. If you like to program in C have a
look at http://www.sourceboost.com/

That looks interesting. Is there a good chance I could build the
clap-switch I described using one of these kits?

Thanks,

JD

On Thu, 21 Feb 2008 02:26:43 -0800 (PST), Pete C
wrote:

Might be a Velleman kit which does what you want (google).

They do a clap switch but not one with a timer, as far as I can tell.

Thanks,

JD

JakeD wrote:
On Wed, 20 Feb 2008 23:19:04 +0000, James Salisbury
wrote:


Have a look at www.farnell.com and order part 4390787 and some of part
9759034 and have a bit of a play. If you like to program in C have a
look at http://www.sourceboost.com/

That looks interesting. Is there a good chance I could build the
clap-switch I described using one of these kits?

Thanks,

JD


You would have to build the clap switch as described in your links as
the trigger, then yes you could use the board to turn the lights on and
off after a determined delay or do anything else you liked.
Alternatively you could take a look at
http://www.google.co.uk/search?hl=en...h+maplin&meta=

this kit is pic based so you could build it and then reprogram it as you
wish. You could change the code so it reads the switches and sets the
required delay. You will need to buy some more chips, you can't
reprogram the one with this kit.

On Thu, 21 Feb 2008 19:48:34 +0000, James Salisbury
wrote:

http://www.google.co.uk/search?hl=en...h+maplin&meta=

this kit is pic based so you could build it and then reprogram it as you
wish. You could change the code so it reads the switches and sets the
required delay. You will need to buy some more chips, you can't
reprogram the one with this kit.

That sounds worth trying! Thanks again for your help.

JD

JakeD wrote:
On Thu, 21 Feb 2008 19:48:34 +0000, James Salisbury
wrote:

http://www.google.co.uk/search?hl=en...h+maplin&meta=

this kit is pic based so you could build it and then reprogram it as you
wish. You could change the code so it reads the switches and sets the
required delay. You will need to buy some more chips, you can't
reprogram the one with this kit.

That sounds worth trying! Thanks again for your help.

JD

How is the project going, and do you have a real email address?