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pequeajim
Joined: 03 Sep 2006
Posts: 708
Location: New Holland, PA
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 Posted: Tue Mar 24, 2009 5:54 pm Post subject: Electronic Cabin Heat Vent |
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Here’s a little tidbit that I know Nick can relate to because he’s a fellow RC’r.
Instead of using the cable to control the vent for my cabin heat, I am using a 12v-5v regulator, servo tester and Hitec Digital servo.
The servo will be mounted on the firewall, connected to the vent with a Hangar 9 titanium control link. The servo is a standard RC digital servo that came out of one of my big rc airplanes and has about 180lbs of torque. This is what I had handy, although a 60-80lb servo would work fine. I built the voltage regulator from parts and the following plans, http://www.mybitbox.com/articles/standalone-voltage-regulator/
I also built a simple servo tester which is not much more than a 555IC, and some cheap parts from Radio Shack with a pot to control the servo travel. The servo will move throughout its range as fast as you turn the dial, so you can open or close the vent pretty fast. I will be mounting the servo tester, (heat control like on a car dash), on my center console along with my master/EFIS switch and my flap position selector; (see my crude drawing).
The nice thing about the Hitec servos is that they are pretty robust when it comes to heat, and are programmable for arm travel.
All in all, $59.00 for the servo and $12.00 for the rest of the parts, plus some solder time = total of $71.00 for a digitally actuated heater vent! If you want to go cheaper, use a HS-75BB with 100lbs of torque. It is used a lot for robotics and only costs $29.00! http://www.servocity.com/html/hs-75bb_retract.html What I used is over kill, but was lying around and not being used.
I will write up something with pictures after it is installed.
Jim!
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info(at)flylightning.net
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| Posted: Wed Mar 25, 2009 4:44 am Post subject: Electronic Cabin Heat Vent |
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Nice…digital when you need fast precise cabin heat vent operation……question is will it 3D?
Good idea I like it.
nick
From: owner-lightning-list-server(at)matronics.com [mailto:owner-lightning-list-server(at)matronics.com] On Behalf Of Jim Langley
Sent: Tuesday, March 24, 2009 8:53 PM
To: lightning-list(at)matronics.com
Subject: Lightning-List: Electronic Cabin Heat Vent
Here’s a little tidbit that I know Nick can relate to because he’s a fellow RC’r.
Instead of using the cable to control the vent for my cabin heat, I am using a 12v-5v regulator, servo tester and Hitec Digital servo.
The servo will be mounted on the firewall, connected to the vent with a Hangar 9 titanium control link. The servo is a standard RC digital servo that came out of one of my big rc airplanes and has about 180lbs of torque. This is what I had handy, although a 60-80lb servo would work fine. I built the voltage regulator from parts and the following plans, http://www.mybitbox.com/articles/standalone-voltage-regulator/
I also built a simple servo tester which is not much more than a 555IC, and some cheap parts from Radio Shack with a pot to control the servo travel. The servo will move throughout its range as fast as you turn the dial, so you can open or close the vent pretty fast. I will be mounting the servo tester, (heat control like on a car dash), on my center console along with my master/EFIS switch and my flap position selector; (see my crude drawing).
The nice thing about the Hitec servos is that they are pretty robust when it comes to heat, and are programmable for arm travel.
All in all, $59.00 for the servo and $12.00 for the rest of the parts, plus some solder time = total of $71.00 for a digitally actuated heater vent! If you want to go cheaper, use a HS-75BB with 100lbs of torque. It is used a lot for robotics and only costs $29.00! http://www.servocity.com/html/hs-75bb_retract.html What I used is over kill, but was lying around and not being used.
I will write up something with pictures after it is installed.
Jim!
[quote][b]
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pequeajim
Joined: 03 Sep 2006
Posts: 708
Location: New Holland, PA
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| Posted: Wed Mar 25, 2009 7:47 am Post subject: Electronic Cabin Heat Vent |
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It will hang on the vent all day...
On Wed, Mar 25, 2009 at 8:43 AM, flylightning <info(at)flylightning.net (info(at)flylightning.net)> wrote:
[quote]
Nice…digital when you need fast precise cabin heat vent operation……question is will it 3D?
[b]
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info(at)flylightning.net
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| Posted: Wed Mar 25, 2009 8:58 am Post subject: Electronic Cabin Heat Vent |
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Nice!
From: owner-lightning-list-server(at)matronics.com [mailto:owner-lightning-list-server(at)matronics.com] On Behalf Of Jim Langley
Sent: Wednesday, March 25, 2009 10:45 AM
To: lightning-list(at)matronics.com
Subject: Re: Lightning-List: Electronic Cabin Heat Vent
It will hang on the vent all day...
On Wed, Mar 25, 2009 at 8:43 AM, flylightning <info(at)flylightning.net (info(at)flylightning.net)> wrote:
Nice…digital when you need fast precise cabin heat vent operation……question is will it 3D?
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0123456789
[quote][b]
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selwyn
Joined: 12 Mar 2008
Posts: 102
Location: Australia
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| Posted: Wed Mar 25, 2009 1:36 pm Post subject: Re: Electronic Cabin Heat Vent |
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Neat idea Jim.
I notice you have a rotary flap selector drawn in as well which implies some sort of servo control for the flap motor. What are you using there?
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Cheers, Selwyn
Kit 66 VH-ELZ |
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pequeajim
Joined: 03 Sep 2006
Posts: 708
Location: New Holland, PA
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| Posted: Wed Mar 25, 2009 3:04 pm Post subject: Electronic Cabin Heat Vent |
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I don't have it installed yet, but I will be using a rotary selector switch
like that used on the Flight Design CT, and my MGL I/O extender will control
the flaps.
--
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selwyn
Joined: 12 Mar 2008
Posts: 102
Location: Australia
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| Posted: Thu Mar 26, 2009 4:16 pm Post subject: Re: Electronic Cabin Heat Vent |
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Very neat. I've just ordered my Voyager but hadn't thought of that one yet, I am still getting my head around all the standard EFIS functions but the thing seems almost infinitely extensible.
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Cheers, Selwyn
Kit 66 VH-ELZ |
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