Remote trigger suggestions?

N

Nicholas

Guest
I'm not sure if I'm in the right group. If not, I'm sure someone here
can suggest a more suitable one.

At any rate, Here is my project. I am building a display for kids and
need some sort of remote trigger. The concept is based around the
children using a tethered flashlight (black light) to pick out hidden
nocturnal animals painted on the display. When the animals are found
with the light the "bushes" will open to reveal the whole image. I would
like some sort of focused always on remote trigger that will activate
only when the unit is pointed directly at the image. Point it anywhere
else and nothing happens. The kids must not have to press any buttons
other than to turn on the flash light. In addition, there would need to
be some sort of timer so the animal is only revealed for 10 seconds or
so and the system will automatically reset.

thanks
 
"Nicholas" <calypson@bellsouth.net> wrote in message
news:Jqhhc.36103$Yw5.19230@bignews4.bellsouth.net...
I'm not sure if I'm in the right group. If not, I'm sure someone here
can suggest a more suitable one.

At any rate, Here is my project. I am building a display for kids and
need some sort of remote trigger. The concept is based around the
children using a tethered flashlight (black light) to pick out hidden
nocturnal animals painted on the display. When the animals are found
with the light the "bushes" will open to reveal the whole image. I would
like some sort of focused always on remote trigger that will activate
only when the unit is pointed directly at the image. Point it anywhere
else and nothing happens. The kids must not have to press any buttons
other than to turn on the flash light. In addition, there would need to
be some sort of timer so the animal is only revealed for 10 seconds or
so and the system will automatically reset.

thanks

Nice project, I like the application. :) Go search on 'light sensitive
Click to expand...
switch", there'll be heaps of hits. Some are kits and circuits if you really
want to go the DIY way, or just buy an off-the-shelf unit. Some of the OTS
stuff come with time-out timers as well. Your local hardware or electronics
store may well be a place to go.

Cheers.

Ken
 
Nicholas <calypson@bellsouth.net> wrote in message news:<Jqhhc.36103$Yw5.19230@bignews4.bellsouth.net>...
I'm not sure if I'm in the right group. If not, I'm sure someone here
can suggest a more suitable one.

At any rate, Here is my project. I am building a display for kids and
need some sort of remote trigger. The concept is based around the
children using a tethered flashlight (black light) to pick out hidden
nocturnal animals painted on the display. When the animals are found
with the light the "bushes" will open to reveal the whole image. I would
like some sort of focused always on remote trigger that will activate
only when the unit is pointed directly at the image. Point it anywhere
else and nothing happens. The kids must not have to press any buttons
other than to turn on the flash light. In addition, there would need to
be some sort of timer so the animal is only revealed for 10 seconds or
so and the system will automatically reset.

thanks
Click to expand...
You might consider a laser pointer instead of black light, as you
might have a hard time with the spread of the light beam and your need
to trigger one animal at a time. An off-delay timer is what I think
you want, I believe this will get you around 10sec (the switch is
representing your trigger). You can adjust the 1K and 10uF to change
your timing. Without the 1M resistor you can get some rather long
timings. The relay then switches the power to run your bushes.
Other brighter people will probably post a better circuit.


1N4004
12V VCC .-|<---.
+ | |
| | ___ |
|------------------- -----------o-UUU--o----.
| \ ^ |
| --- RELAY |
| |MJE 3055 COIL |
| | ===
| 1K5 | GND
| |
|------/\/\/\----- /
| \ ^ 2N2222
| ---
| |
| \
| \ /
| \ \ 2K2
-------o o-------.
|
----------
| \
| /
1N4004 V \ 1K
- /
| \
-----------------
| |
--- /
10uF /-\ \ 1M
| /
=== |
GND ===
GND
created by Andy´s ASCII-Circuit v1.24.140803 Beta www.tech-chat.de
 
Thanks for the reply and diagram. I am venturing into uncharted
territory (for me anyway) and have lot of learning to do. However, the
blacklight is essential at this point to the project coordinator.
Mainly because several items in the display will be rendered in
widlfire/Rosco Vid/FX paints. A test proved that the paint/blacklight
gave the exact look that was wanted. I did have to put the light
through a lens and use a donut and shutters to narrow the beam. My fear
is that the black light beam may not be enough to trigger the unit.
Until I get my hands on the triggers remotes etc., I won't know.

thanks again



Seth Koster wrote:

Nicholas <calypson@bellsouth.net> wrote in message news:<Jqhhc.36103$Yw5.19230@bignews4.bellsouth.net>...

I'm not sure if I'm in the right group. If not, I'm sure someone here
can suggest a more suitable one.

At any rate, Here is my project. I am building a display for kids and
need some sort of remote trigger. The concept is based around the
children using a tethered flashlight (black light) to pick out hidden
nocturnal animals painted on the display. When the animals are found
with the light the "bushes" will open to reveal the whole image. I would
like some sort of focused always on remote trigger that will activate
only when the unit is pointed directly at the image. Point it anywhere
else and nothing happens. The kids must not have to press any buttons
other than to turn on the flash light. In addition, there would need to
be some sort of timer so the animal is only revealed for 10 seconds or
so and the system will automatically reset.

thanks


You might consider a laser pointer instead of black light, as you
might have a hard time with the spread of the light beam and your need
to trigger one animal at a time. An off-delay timer is what I think
you want, I believe this will get you around 10sec (the switch is
representing your trigger). You can adjust the 1K and 10uF to change
your timing. Without the 1M resistor you can get some rather long
timings. The relay then switches the power to run your bushes.
Other brighter people will probably post a better circuit.


1N4004
12V VCC .-|<---.
+ | |
| | ___ |
|------------------- -----------o-UUU--o----.
| \ ^ |
| --- RELAY |
| |MJE 3055 COIL |
| | ===
| 1K5 | GND
| |
|------/\/\/\----- /
| \ ^ 2N2222
| ---
| |
| \
| \ /
| \ \ 2K2
-------o o-------.
|
----------
| \
| /
1N4004 V \ 1K
- /
| \
-----------------
| |
--- /
10uF /-\ \ 1M
| /
=== |
GND ===
GND
created by Andy´s ASCII-Circuit v1.24.140803 Beta www.tech-chat.de
Click to expand...
 
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