Today's Message Index:
----------------------
1. 08:02 AM - Timer module (Dave Lammers)
2. 09:10 AM - Re: Timer module (William Slaughter)
3. 10:13 AM - Re: Strobe Light Selection (Dennis Johnson)
4. 10:27 AM - Re: Timer module (Bret Smith)
5. 10:50 AM - Re: Timer module (Joe Garner)
6. 11:14 AM - Re: Timer module (Brett Ferrell)
7. 11:31 AM - Re: Timer module (Ken)
8. 11:35 AM - Re: Timer module (Gaylen Lerohl)
9. 12:31 PM - Re: Timer module (Robert L. Nuckolls, III)
10. 07:26 PM - Starting Points (corrected as promised) (Robert L. Nuckolls, III)
11. 07:47 PM - Re: Starting Points (corrected as promised) (Earl_Schroeder)
12. 08:11 PM - Re: Need low cost schematic program (Greg)
Message 1
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Hi Listers,
I'm looking for a module that I can use to turn off courtesy lights
after a predetermined (setable) period of time, similar to the function
in your automobile interior lighting.
I would like these courtesy lights to be usable independent of the
master switch, (i.e.: on an "always hot" bus), however, I want them to
turn off after a period of time to eliminate the possibility of battery
drain.
The requirements are:
Input & Output voltage: 12/14v
Output current: Less than 100 ma. (Drives several gangs of multiple
LED's)
Input current: As required for the output, but must be absolutely ZERO
in the off state.
Size: Less than several cubic inches.
Weight: Not much (I've found some controllers that would work but they
are big and hefty).
Activated by momentary on switch.
Optionally, after in the ON state, another press of the momentary ON
will turn the output OFF.
It seems that such a thing could be found reasonably easy, but I have
searched and come up with nothing.
I would appreciate your ideas/suggestions.
Thanks in advance.
Dave Lammers
Message 2
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I want one, too! I was just thinking about the same application yesterday
for my baggage comparments.
William Slaughter
RV-8
-----Original Message-----
From: owner-aeroelectric-list-server@matronics.com
[mailto:owner-aeroelectric-list-server@matronics.com] On Behalf Of Dave
Lammers
Sent: Sunday, January 21, 2007 10:02 AM
Subject: AeroElectric-List: Timer module
--> <davelammers@mchsi.com>
Hi Listers,
I'm looking for a module that I can use to turn off courtesy lights
after a predetermined (setable) period of time, similar to the function
in your automobile interior lighting.
I would like these courtesy lights to be usable independent of the
master switch, (i.e.: on an "always hot" bus), however, I want them to
turn off after a period of time to eliminate the possibility of battery
drain.
The requirements are:
Input & Output voltage: 12/14v
Output current: Less than 100 ma. (Drives several gangs of multiple
LED's)
Input current: As required for the output, but must be absolutely ZERO
in the off state.
Size: Less than several cubic inches.
Weight: Not much (I've found some controllers that would work but they
are big and hefty).
Activated by momentary on switch.
Optionally, after in the ON state, another press of the momentary ON
will turn the output OFF.
It seems that such a thing could be found reasonably easy, but I have
searched and come up with nothing.
I would appreciate your ideas/suggestions.
Thanks in advance.
Dave Lammers
Message 3
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| Subject: | RE: Strobe Light Selection |
Hi Mike,
I haven't flown yet (hoping for next month!) but I installed the
combined wingtip LED position lights and strobe lights from GS-Air
https://ssl.perfora.net/gs-air.com/sess/utn;jsessionid=1541ee915db8cd2/
shopdata/index.shopscript
They look great and are probably a tiny bit more aerodynamic than the
certified ones from Whelen and Aeroflash, plus, they're cheaper. They
have a single power supply, which has a variety of selectable flash
sequences and two power levels. Customer support from GS-Air has been
outstanding.
Good luck,
Dennis Johnson
Message 4
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Dave, I'm searching for the same timer module. I want to actuate it from a
contact switch when the canopy is opened. I, too, plan to have it drive 3-4
banks of LEDs.
Please let me know if you identify an acceptable module and I will do
likewise.
Bret Smith
RV-9A (91314)
Mineral Bluff, GA
www.FlightInnovations.com
-----Original Message-----
From: owner-aeroelectric-list-server@matronics.com
[mailto:owner-aeroelectric-list-server@matronics.com] On Behalf Of Dave
Lammers
Sent: Sunday, January 21, 2007 11:02 AM
Subject: AeroElectric-List: Timer module
--> <davelammers@mchsi.com>
Hi Listers,
I'm looking for a module that I can use to turn off courtesy lights after a
predetermined (setable) period of time, similar to the function in your
automobile interior lighting.
I would like these courtesy lights to be usable independent of the master
switch, (i.e.: on an "always hot" bus), however, I want them to turn off
after a period of time to eliminate the possibility of battery drain.
The requirements are:
Input & Output voltage: 12/14v
Output current: Less than 100 ma. (Drives several gangs of multiple
LED's)
Input current: As required for the output, but must be absolutely ZERO
in the off state.
Size: Less than several cubic inches.
Weight: Not much (I've found some controllers that would work but they are
big and hefty).
Activated by momentary on switch.
Optionally, after in the ON state, another press of the momentary ON will
turn the output OFF.
It seems that such a thing could be found reasonably easy, but I have
searched and come up with nothing.
I would appreciate your ideas/suggestions.
Thanks in advance.
Dave Lammers
Message 5
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| Subject: | Re: Timer module |
How about using a relay and R-C circuit to time it? We use similar on
elevators all the time...
+12--|-----||--------------------> leds
| relay contact
|
|
----/_-----|----O------------gnd
switch | relay coil
|
|-/\/\/\/--|(-----gnd
resistor capacitor
When the switch closes it picks the relay, contacts light the led.
Switch opens and RC holds the relay in for a 'while'.
The resistor / capacitor / relay coil resistance sets the timing...
Sorry for the ascii art :} and note that I left out fuses, led
resistors, etc.
Hope this helps, YMMV!!
/Joe
Dave Lammers wrote:
> <davelammers@mchsi.com>
>
> Hi Listers,
>
> I'm looking for a module that I can use to turn off courtesy lights
> after a predetermined (setable) period of time, similar to the function
> in your automobile interior lighting.
>
> I would like these courtesy lights to be usable independent of the
> master switch, (i.e.: on an "always hot" bus), however, I want them to
> turn off after a period of time to eliminate the possibility of battery
> drain.
>
> The requirements are:
>
> Input & Output voltage: 12/14v
> Output current: Less than 100 ma. (Drives several gangs of multiple
> LED's)
> Input current: As required for the output, but must be absolutely ZERO
> in the off state.
> Size: Less than several cubic inches.
> Weight: Not much (I've found some controllers that would work but they
> are big and hefty).
> Activated by momentary on switch.
> Optionally, after in the ON state, another press of the momentary ON
> will turn the output OFF.
>
> It seems that such a thing could be found reasonably easy, but I have
> searched and come up with nothing.
> I would appreciate your ideas/suggestions.
>
> Thanks in advance.
> Dave Lammers
>
>
>
>
>
>
>
--
-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
Joe Garner IASEL-RV 6@OAK aka 'Snoopy'
jgarner(at)elelink.org |
jgarner(at)dslextreme.com .______(o)______.
kc6utr(at)w6pw www.elelink.org / \
-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
Message 6
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I bought such a module for my aircraft, and though it was a b*$ch to hook up
right, I'm really pleased with the result. It's called the "lights out"
module.
Here's a similar module, though it's not the one I bought. Let me know if this
doesn't meet your needs, I have papework on the one I used, but it's at the
hangar.
http://www.webelectricproducts.com/products.htm
Brett
Quoting Bret Smith <smithhb@tds.net>:
>
> Dave, I'm searching for the same timer module. I want to actuate it from a
> contact switch when the canopy is opened. I, too, plan to have it drive 3-4
> banks of LEDs.
>
> Please let me know if you identify an acceptable module and I will do
> likewise.
>
>
> Bret Smith
> RV-9A (91314)
> Mineral Bluff, GA
> www.FlightInnovations.com
>
> -----Original Message-----
> From: owner-aeroelectric-list-server@matronics.com
> [mailto:owner-aeroelectric-list-server@matronics.com] On Behalf Of Dave
> Lammers
> Sent: Sunday, January 21, 2007 11:02 AM
> To: aeroelectric-list@matronics.com
> Subject: AeroElectric-List: Timer module
>
> --> <davelammers@mchsi.com>
>
> Hi Listers,
>
> I'm looking for a module that I can use to turn off courtesy lights after a
> predetermined (setable) period of time, similar to the function in your
> automobile interior lighting.
>
> I would like these courtesy lights to be usable independent of the master
> switch, (i.e.: on an "always hot" bus), however, I want them to turn off
> after a period of time to eliminate the possibility of battery drain.
>
> The requirements are:
>
> Input & Output voltage: 12/14v
> Output current: Less than 100 ma. (Drives several gangs of multiple
> LED's)
> Input current: As required for the output, but must be absolutely ZERO
> in the off state.
> Size: Less than several cubic inches.
> Weight: Not much (I've found some controllers that would work but they are
> big and hefty).
> Activated by momentary on switch.
> Optionally, after in the ON state, another press of the momentary ON will
> turn the output OFF.
>
> It seems that such a thing could be found reasonably easy, but I have
> searched and come up with nothing.
> I would appreciate your ideas/suggestions.
>
> Thanks in advance.
> Dave Lammers
>
>
Message 7
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| Subject: | Re: Timer module |
I'd suggest a solid state device with 4 components such as I use for
autoshutoff circuits on small battery powered devices such as multimeters.
A switch, mosfet, capacitor, and diode. The switch is the largest component.
You'd perhaps want a larger mosfet but I've used a VN10KM mosfet (radio
shack 276-2070) good for 0.5amp successfully. It looks like a tiny
plastic transistor with three leads.
I put the capacitor and diode in parallel from the Source to the gate
with the banded end of the diode and the + end of the cap connected to
the Gate. Ground the Source. Your LED's (with current limiting
resistors) goes between +12 volts and the Drain. Now you can
momentarilly switch +12volts onto the Gate and the LED's will stay on
until the charge on the cap bleeds off. As an example I typically get 1
min. with a .22uf capacitor and 1 hr. with 10uf. Just play with
capacitor values to get the time that you want.
I like to use a 3 positon switch. Center is normal. Up is on
continuously but usually I just put it up and immediately back to center
to let the timer run. Down shorts the cap or discharges it to ground for
an immediate off. A momentary switch (spring loaded to center) or just a
push button will also work well.
Ken
Joe Garner wrote:
>
>How about using a relay and R-C circuit to time it? We use similar on
>elevators all the time...
>
>+12--|-----||--------------------> leds
> | relay contact
> |
> |
> ----/_-----|----O------------gnd
> switch | relay coil
> |
> |-/\/\/\/--|(-----gnd
> resistor capacitor
>
>When the switch closes it picks the relay, contacts light the led.
>Switch opens and RC holds the relay in for a 'while'.
>
>The resistor / capacitor / relay coil resistance sets the timing...
>
>Sorry for the ascii art :} and note that I left out fuses, led
>resistors, etc.
>
>
>Hope this helps, YMMV!!
>
>/Joe
>
>
>Dave Lammers wrote:
>
>
>><davelammers@mchsi.com>
>>
>>Hi Listers,
>>
>>I'm looking for a module that I can use to turn off courtesy lights
>>after a predetermined (setable) period of time, similar to the function
>>in your automobile interior lighting.
>>
>>I would like these courtesy lights to be usable independent of the
>>master switch, (i.e.: on an "always hot" bus), however, I want them to
>>turn off after a period of time to eliminate the possibility of battery
>>drain.
>>
>>The requirements are:
>>
>>Input & Output voltage: 12/14v
>>Output current: Less than 100 ma. (Drives several gangs of multiple
>>LED's)
>>Input current: As required for the output, but must be absolutely ZERO
>>in the off state.
>>Size: Less than several cubic inches.
>>Weight: Not much (I've found some controllers that would work but they
>>are big and hefty).
>>Activated by momentary on switch.
>>Optionally, after in the ON state, another press of the momentary ON
>>will turn the output OFF.
>>
>>It seems that such a thing could be found reasonably easy, but I have
>>searched and come up with nothing.
>>I would appreciate your ideas/suggestions.
>>
>>Thanks in advance.
>>Dave Lammers
>>
>>
>>
>>
>>
>>
>>
>>
>>
>
>
>
Message 8
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| Subject: | Re: Timer module |
Check precisiontimer.com . They have compact modules, about 4 oz.
Regards,
Gaylen Lerohl
Terminaltown.com
----- Original Message -----
From: "Dave Lammers" <davelammers@mchsi.com>
Sent: Sunday, January 21, 2007 10:01 AM
Subject: AeroElectric-List: Timer module
> <davelammers@mchsi.com>
>
> Hi Listers,
>
> I'm looking for a module that I can use to turn off courtesy lights after
> a predetermined (setable) period of time, similar to the function in your
> automobile interior lighting.
>
> I would like these courtesy lights to be usable independent of the master
> switch, (i.e.: on an "always hot" bus), however, I want them to turn off
> after a period of time to eliminate the possibility of battery drain.
>
> The requirements are:
>
> Input & Output voltage: 12/14v
> Output current: Less than 100 ma. (Drives several gangs of multiple
> LED's)
> Input current: As required for the output, but must be absolutely ZERO
> in the off state.
> Size: Less than several cubic inches.
> Weight: Not much (I've found some controllers that would work but they
> are big and hefty).
> Activated by momentary on switch.
> Optionally, after in the ON state, another press of the momentary ON will
> turn the output OFF.
>
> It seems that such a thing could be found reasonably easy, but I have
> searched and come up with nothing.
> I would appreciate your ideas/suggestions.
>
> Thanks in advance.
> Dave Lammers
>
>
>
Message 9
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| Subject: | Re: Timer module |
At 10:01 AM 1/21/2007 -0600, you wrote:
>
>Hi Listers,
>
>I'm looking for a module that I can use to turn off courtesy lights after
>a predetermined (setable) period of time, similar to the function in your
>automobile interior lighting.
>
>I would like these courtesy lights to be usable independent of the master
>switch, (i.e.: on an "always hot" bus), however, I want them to turn off
>after a period of time to eliminate the possibility of battery drain.
>
>The requirements are:
>
>Input & Output voltage: 12/14v
>Output current: Less than 100 ma. (Drives several gangs of multiple LED's)
>Input current: As required for the output, but must be absolutely ZERO
>in the off state.
>Size: Less than several cubic inches.
>Weight: Not much (I've found some controllers that would work but they
>are big and hefty).
>Activated by momentary on switch.
>Optionally, after in the ON state, another press of the momentary ON will
>turn the output OFF.
That is one of the products we're developing that will fit into
our standard A enclosure. You can see the package at:
http://www.aeroelectric.com/Pictures/Products/Enclosures/A_Enclosure.pdf
Weight on this puppy is about 3 oz.
It will have an externally programmable time delay ranging from
10 to 1000 seconds. It can be externally strapped to default
ON or default OFF at power up. Will handle 5 amp loads. External
controls are a steady pull to ground which initiates an ON
cycle limited to 1000 seconds. A momentary pull to ground on same
line initiates an ON-cycle for the programmed limit. A pull-to-ground
either momentary or continuous for OFF. If momentary (normally
open) then the system will default according to the strapping
on power up. If continuously held to ground, the system is OFF
under all conditions including right after power up.
This will be our 9024-100-1 On Limit Timer to be on the website
sometime this year. In the mean time, if you're of a notion to
roll-yer-own, consider the schematic at
http://www.aeroelectric.com/Pictures/Schematics/On_Limit_Timer.pdf
Parts are available from Digikey and while it doesn't have the
software driven features of control logic cited for the 9024,
it may well do what you need done. This defaults off on power up.
Momentary pull down to ground initiates a timed ON function, a
momentary pull down shuts the load off.
>It seems that such a thing could be found reasonably easy, but I have
>searched and come up with nothing.
>I would appreciate your ideas/suggestions.
There are dozens of ways to skin this cat . . . here
are a few.
Bob . . .
---------------------------------------------------------
< What is so wonderful about scientific truth...is that >
< the authority which determines whether there can be >
< debate or not does not reside in some fraternity of >
< scientists; nor is it divine. The authority rests >
< with experiment. >
< --Lawrence M. Krauss >
---------------------------------------------------------
Message 10
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| Subject: | Starting Points (corrected as promised) |
Actually, I'd already incorporated an article with corrected
links into another larger work that got posted but never indexed.
I've expanded the article to talk about wire books and fixed
the links. See:
http://www.aeroelectric.com/articles/Getting_Started.pdf
Bob . . .
---------------------------------------------------------
< What is so wonderful about scientific truth...is that >
< the authority which determines whether there can be >
< debate or not does not reside in some fraternity of >
< scientists; nor is it divine. The authority rests >
< with experiment. >
< --Lawrence M. Krauss >
---------------------------------------------------------
Message 11
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| Subject: | Re: Starting Points (corrected as promised) |
Hmmm, updated in 2008? I didn't think I slept THAT long... :-D Earl
Robert L. Nuckolls, III wrote:
> <nuckollsr@cox.net>
>
> Actually, I'd already incorporated an article with corrected
> links into another larger work that got posted but never indexed.
> I've expanded the article to talk about wire books and fixed
> the links. See:
>
>
> http://www.aeroelectric.com/articles/Getting_Started.pdf
>
>
> Bob . . .
>
>
> ---------------------------------------------------------
> < What is so wonderful about scientific truth...is that >
> < the authority which determines whether there can be >
> < debate or not does not reside in some fraternity of >
> < scientists; nor is it divine. The authority rests >
> < with experiment. >
> < --Lawrence M. Krauss >
> ---------------------------------------------------------
>
>
Message 12
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| Subject: | Re: Need low cost schematic program |
I've been using DipTrace www.diptrace.com and check this place out for PCB
manufacture. There is an online quote service for comparison
http://www.futurlec.com/index.shtml
Greg
> <gandjpappy@aol.com>
>
> I just ordered "The AeroElectric Connection" and am looking forward to
> laying out the electrical system for my RV8. I am interested in
> purchasing an inexpensive CAD program to document the system and was
> curious as to what recommendations this list might have.
>
> I am also interested if anyone has any recommendatons of a good software
> program and process for designing and producting 2 sided boards for
> small circuits. It has been 15 years since I designed circuits and at
> that point I had a lab at my disposal. I am looking for something I can
> use at home and that would produce acceptable boards.
>
> Thank you in advance for your recommendations.
>
> Greg
>
>
> --
> 13/01/2007 5:40 PM
>
>
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