[simpits-tech] Synchro converter boards - Was Beta Innovations Nitro Analog board

David C. Allen allendc at qwest.net
Sat Jun 2 18:21:54 PDT 2007 

Hi Jay
This guy on Ebay sells 400hz Inverter kits, 12 Volt DC to 115VAC 
400Hz 3 Phase Converter 4 Avionics  Item number: 200115049579. He 
also has single phase kit.

I don't know how to program so I am at the mercy of the programmers.

Then next big challenge will be the implementation of the ARINC 429 
bus so one can talk to instruments like digital clocks

http://www.holtic.com/data_sheets.cfm

David
www.737FlightSim.com





At 07:35 PM 6/2/2007 -0500, you wrote:
> >From what I have seen of this circuit and read of this chapter, it will be a
>serial data input from a standard serial port.  The circuit is setup to use
>a multidrop RS 485 data bus.  The data is then converted via a PIC and then
>sent into the rest of the circuit where the magic happens.  You will need a
>26v 400hz power to drive this board as well as your synchros.  If you have
>this, great, if not, then Mike also provides a little inverter board you can
>build but need +/- 24v to run.  Not a typical PS, but obtainable.  For both
>of these projects you will need to source some transformers....but don't
>fear, I've already done that part.
>
>The biggest thing one will need to do is write some interface software to
>get the digital data out of the sim to the serial port.  Once that's done,
>the rest is soldering and watching in great anticipation.
>
>Jay
>
>-----Original Message-----
>From: simpits-tech-bounces at simpits.org
>[mailto:simpits-tech-bounces at simpits.org] On Behalf Of David C. Allen
>Sent: Saturday, June 02, 2007 5:34 PM
>To: Simulator Cockpit tech list
>Subject: [simpits-tech] Synchro converter boards - Was Beta Innovations
>Nitro Analog board
>
>Well Jay I will be standing in Line, if there is a line forming for
>the first production run.
>
>I need to control a total of 4 Synchro so put me down for the number
>Synchro converter boards that will do the job!
>
>2 of the Synchro's are 26 volts 400hz and I will let you know the
>voltage of the other 2 but my guess is they are also 26 volts 400hz.
>
>Any idea what the input will be, 0 to 5 volt like the Nitro Analog or
>Digital?
>
>David
>www.737FlightSim.com
>
>At 05:08 PM 6/2/2007 -0500, you wrote:
> >As soon as I have the final version of that circuit and he gives me the
> >green light, it will be drawn up as fast as I can and off to the makers.
> >
> >Jay
> >
> >-----Original Message-----
> >From: simpits-tech-bounces at simpits.org
> >[mailto:simpits-tech-bounces at simpits.org] On Behalf Of David C. Allen
> >Sent: Saturday, June 02, 2007 4:32 PM
> >To: Simulator Cockpit tech list
> >Subject: Re: [simpits-tech] Beta Innovations Nitro Analog board
> >
> >At 03:58 PM 6/2/2007 -0500, you wrote:
> > >So you are driving synchros with a  0-5v signal, did I read that
>correctly?
> >
> >No I am waiting for Mikes book to be released and for you to start
> >making the Synchro converter boards >:-} >:-} >:-} >:-}
> >
> > >With regards to the needle in the off position...I thought I was anal
> > >retentive.  I like it.
> >
> >LOL
> >
> > >I decided to compromise on that issue with my pit
> > >for the ease of which the AC motors work.  I simply scavenged the faces
>and
> > >needles from my real gauges along with the cans.
> >
> >I can understand that !
> >
> >David
> >www.737FlightSim.com
> >
> >
> > >Jay
> > >
> > >-----Original Message-----
> > >From: simpits-tech-bounces at simpits.org
> > >[mailto:simpits-tech-bounces at simpits.org] On Behalf Of David C. Allen
> > >Sent: Saturday, June 02, 2007 11:46 AM
> > >To: Simulator Cockpit tech list
> > >Subject: Re: [simpits-tech] Beta Innovations Nitro Analog board
> > >
> > >Hi Jay
> > >I converted the real instruments in "Analog.JPG" to 0 to 5vdc operation.
> > >
> > >There are Synchro driven instruments in the 737 and they will be
> > >converted to air core with the second Nitro board.
> > >
> > >The main reason I wanted to use the real instruments is the fact of
> > >how they respond when the aircraft is powered or when aircraft power
> > >is removed.
> > >
> > >With Synchro driven instruments they tend to remain at the position
> > >when power is removed (provided the pointer is balanced) while the
> > >other styles of instruments drop to the bottom of the scale when
> > >power is removed (spring meter movement). All of the instruments in
> > >"Analog.JPG" drop to the bottom of the scale or center, when power is
> > >removed. So when you bring a power bus on line the instruments
> > >respond properly (AKA anal-retentive 737 sim builder)
> > >
> > >A true servo motor with position feedback (like a RC Servo) would be
> > >the best match to replace the Synchro in a Synchro driven instruments
> > >because it can position the motor shaft on power up and the shaft
> > >stays in last commanded position when powered down.
> > >
> > >It would be nice to have a choice of air core Boards or RC Servo
> > >boards the directly plug into the Nitro board.
> > >
> > >David
> > >www.737FlightSim.com
> > >
> > >At 12:19 AM 6/2/2007 -0500, you wrote:
> > > >Not to answer for David, but yes.  The air cores are really working out
> > >well
> > > >for Leo.
> > > >
> > > >I have three of my F-16 gauges converted to air core and they work
> > > >wonderfully.  Leo is sending me the rest of the gauges next week
> >including
> > > >the one inch gauges.  These have a very tiny air core motor that I
>helped
> > > >him get.  Company here in the states would never call them back until I
> > >just
> > > >hounded them enough and got them to sell me 75 units.  Leo is about to
> >buy
> > > >more from me and I'm about to have to order more.  These babies are
> >selling
> > > >like hot cakes.  So far, just about all the round gauges for falcon are
> > > >fully working.  Only ones that aren't are the ones that have no sh. Mem
> > > >value, but leo is going to program his software to "fake" those values
>so
> > > >you will have them "working" as well.  Like for cabin pressure, we will
> > > >monitor things like the canopy status and other logic to cause this
>gauge
> > >to
> > > >"function".  Same for the Hyd gauges as well.
> > > >
> > > >David, good to see you having some working gauges there.  As soon as I
> >get
> > > >mine going, I will post up a video.
> > > >
> > > >I've been spending time back in the garage again with my new tool.
> >Finally
> > > >bought myself a metal lathe and been learning all about turning last
> >couple
> > > >of weeks.
> > > >
> > > >jay
> > > >
> > > >-----Original Message-----
> > > >From: simpits-tech-bounces at simpits.org
> > > >[mailto:simpits-tech-bounces at simpits.org] On Behalf Of Gene Buckle
> > > >Sent: Saturday, June 02, 2007 12:09 AM
> > > >To: Simulator Cockpit tech list
> > > >Subject: Re: [simpits-tech] Beta Innovations Nitro Analog board
> > > >
> > > > > Hello everyone
> > > > > Leo did it again with his GREAT Nitro Board. I am able to control
>the
> > > > > 737's analog instruments with this board.
> > > > >
> > > > > Some images:
> > > > >
> > > > > http://www.737flightsim.com/Analog/Analog.JPG
> > > > >
> > > > > http://www.737flightsim.com/Analog/Analog4.jpg
> > > > >
> > > > > http://www.737flightsim.com/Analog/Analog5.jpg
> > > > >
> > > > >
> > > >David, have those been rebuilt using Leo's air-core motor assemblies?
> > > >
> > > >g.
> > > >
> > > >--
> > > >"I'm not crazy, I'm plausibly off-nominal!"
> > > >
> > > >Proud owner of F-15C 80-0007
> > > >http://www.f15sim.com - The only one of its kind.
> > > >
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