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The evolution of a
home cockpit
q by Pim van
Vrijaldenhoven
For a chronological list of events you
really should start at Phase 1 and
work you way to the top. |
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Januari 2025
Upgrading the Reading Lights and
Floodlight in the Skalarki Overhead
I've
never been a fan of Skalarki’s implementation of the
light fixtures in their overhead panels. A few years
ago, I purchased two OEM 54VU light panels intending
to upgrade. Unfortunately, upon returning home, I
discovered that the panels were physically
incompatible with the VierImPott overhead structure.
Additionally, these OEM panels use a 5-volt
backlighting system and a 28V high-power incandescent
bulb, which doesn’t align with Skalarki’s electronics.
Recently,
I came across these panels while sorting through a
drawer and decided to repurpose their light fixtures.
To make it work, I drilled a 60 mm hole in the
Skalarki panel to mount the light fixture and replaced
the original bulb with a 12V light strip consisting of
two sets of three LEDs.
The
next task was upgrading the floodlight in the Audio
Switching Panel. For this, I sourced an OEM 48VU Audio
Switching Panel and extracted its light fixture. This
required a 90 mm hole in the Skalarki panel. As
before, I swapped out the bulb for a 12V light strip
to ensure compatibility.
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December 2024
It
has been a long time since I updated this website
- I have
replaced the captain's side stick with a Trustmaster
Hotas Magnetic base and a FlightSimProjects A320 side
stick.
- I
added console lights to the captain's and F/O's side
base.
- Because
I started to use SayIntentions as an ATC service, I
had to revamp the audio system. I added a Peiker
Microphone to the captain's side base.
The PTT
button on the Peiker microphone is just a simple switch, so
you can connect it to a spare input on a Leo Bodnar card.
Since I am using a Logitech Extreme 3D Pro as the side stick
base, I use one of its button inputs. The button input can
be read directly by an ATC program like vPilot,
SayIntentions or Beyond ATC. It can also be read by
ProSimA322, that’s what I do. ProSimA322 has a gate
“Loudspeaker Mute” that I use to trigger the ATC PTT
function. The beauty of it is that if you pull any of the
side stick PTT buttons (Captain or F/O) or the RAD switches
on the ACP's or the microphone PTT buttons, it will then
activate the ATC PTT function.
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February 2022
- I have
moved the simulator outside to the garden shed.
The shed has been rebuild and insulated. It is
now fully dedicated to the home cockpit.
- I have
added brightness controls to the EFIS controls by
going to a double-axis potentiometer, and a 3D printed
knob. The interface is through a Phidgets 8/8/8
board
- I have
replaced the beamer with a ultra short beam 4K laser
projector
- I upgraded
the main PC with a faster processor, motherboard and
video card
- I replaced
the two secondary PC's with one that handles all the
displays
- I added
MSFS as an alternative flight simulator
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October
2017
The dome
lights are now controlled via a Phidgets 0/16/16
card. By adding a series resistor for each dome
light, both bright and dim levels can be set.
Since ProSimA320 supports a large number of Circuit
Breakers, automotive pull switches where added on the
CB panel. These are connected to the Phidgets
0/16/16 and a 8/8/8 card.
Future
project:
- Put rails
under the F/O seat
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January 2017
During
FSWeekend in November I saw Skalarki's hardware using
warm-white LEDs for the backlighting. This looks so much
better than the yellow backlight that I decided to
rework all my panels. I ordered 2000 warm-white
SMD LEDs in China, plus a 5 meter LED strip and started
to work. It took about 3 weeks that get all the
LEDs replaced. The hardest job was to replace the
LED strips in the TQ, because it
almost
needs
to be totally disassembled. Anyway, the result is
great. All the green strips in the overhead and on
the TQ are now clearly visible.
I have about
4 meters of LED strips left, so I am contemplating on
backlighting the Circuit Breaker Panel.
In
addition I fitted all the appropriate switches with
guards on both the forward and aft overhead
panels.

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July
2016
The
liners arrived a few weeks ago from Vier Im
Pott. Since the sim room is limited in size I
was unable to fit the side windows. However, it
looks nice with the front windows and the ceiling with
dome lights.
I moved over
from the Jeehell A320 package to ProSimA320. This
package is still in development, so I can help out
finding problems. I also helped Skalarki with
their SDK to make it run with "non-P&P"
hardware. I have a DIY Skalarki overhead so I
connected the 100+ switches and annunciators to inputs
that I saw fit. These need to be mapped to
standardized SDK calls. Since ProSimA320 also
relies on the SDK when talking to Skalarki hardware, it
was now possible for me to extend ProSimA320's
functionality by writing a C# program that interfaces
the dome lights, the refuel panel and the pushback
panel.
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January 2016
Liners
have been ordered from Vier Im Pott. I hope to
get them before the summer. The F/O side with
side base, side stick, tiller and rudder pedals was
installed a couple of months ago. This allows
the simulator now to be flown with two pilots.
The overhead
aft panel was installed last summer. It came
with a push-back panel as well as a refuel
panel. Unfortunately the refuel panel is still
not working because of a hardware problem.

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May 2015
The future
project has been realized. I was able top sell my B738
cockpit in one piece and I started to build the Airbus
A320. Because of the years of experience with this
hobby, I decided to take a different approach. Rather
than slowly gathering parts and building item by item, I
decided to purchase the hardware from only two vendors.
The metal
parts come from Vier Im Pott, a German company and the
panels with all their electronics come from Skalarki
Electronics in the UK. Both companies work together, so
the Skalarki parts fit very well in the metal frames.
I have
ordered almost everything possible, except the aft
overhead panels. The software that I use is a freeware
package called Jeehell FMGS. It does in fact all the
things that ProSim737 does for the Boeing 737. It lacks,
however, features like Instructor Station, failures and
weather.
The AWACS
seat that I use at the captain's side is now running on
straight rails. The chair can be moved enough
backwards, so there is no need for J-rails.
I was able
to get hold of an old 747-200 pilot chair, that I will
use at the F/O side.
For a few
more pictures see this
and this.
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September
2014
Many
personal things have happened since I last updated my
site. However, I did make a number of changes to
the cockpit.
- A
FlyEngravity a full metal MIP structure with
integrated CDU bay was added.
- A
wet compass and the F/O Clock was added.
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There is now backlighting in the AFT Overhead and I
added the console flood light.
- Based on an
idea of the Aviation Megastore I automated the release
of the parking brake on the CockpitSonic Motorized TQ.
- Interfacing
of the horn cutout and stab trim switches on the TQ.
- I moved
from FSX to Lockheed Martin Prepar3d.
- Modified a
FlyEngravity CDU with color display.
Because of
problems with the supplier I never got the F/O stuff,
like seat, yoke and pedals.
Note:
I cannot say enough how much Prosim737 has progressed
over these years. In my opinion it is the best
avionics software that is available for us hobbyists
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March 2012
The
problem with this hobby is that as time progresses you
want to make it more and more to look like a real
cockpit. So, I made a number of improvements:
- I
purchased from REVOLUTION SIMPRODUCTS a set of
tumbler switches for the overhead panels.
These include the locking types for e.g. the GEN
switches.
- I
purchased from FlyEngravity a cockpit frame
structure and a set of windows replacing the one
that I built myself.
- Also from
FlyEngravity I bought overhead mounting frames and
covers.
- Using two
Pokeys 56E Ethernet cards I rewired both the FWD and
AFT overhead panels.
- I moved
from a 2-bay aft console to a 3-bay because of
space.
- I added
my newly designed IRS Display to the AFT overhead
panel.
- I use now
a projection screen for the outside view.
- By using
a high quality 10 m HDMI cable I was finally able to
get a HD picture (1080p)
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December
2011
During the
last 6 months I have changed the forward pedestal so it
could support two CDU's. First I was planning to
add a dummy CDU at the F/O position but since Prosim
supports color I changed my mind and purchased the CDU
from Flightdeck Solutions.
During this
period I also replaced the CPFlight MCP with their PRO
version.
I have
modified a real Korry annunciator by modifying the glass
bulbs to hold 5 mm LED's. However, I am unable to get to
the switch function because it's buried in a small PCB
that I cannot get to.
As a current
project I am designing an IRS display that will resemble
as much as possible the real thing. It will also
support keyboard entries. More on that later.
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July 2011
A number of
people asked me for an update, so here is a list of
changes that I made the last 6 months:
- The system
is now fully driven by Prosim. I am no longer
using any of my panel(s) programs because Prosim737
fully supports my hardware. Only for the FDS
SYS1 board there is no native support, so that's
handled via the FSUIPC interface.
- I
got rid of the three monitors and purchased an HD
Beamer. Although the resolution is lower, the
immersion factor is much higher.
- From
FlyEngravity I purchased the lower sub panels which
are backlit. Prosim737 supports independent
backlight control of all sections as powered by the
various electrical busses. Using low cost
dimmers from Hong Kong I can now control the
backlighting like the real plane.
- Also from
FlyEngravity I purchased backlit panels for the
forward overhead. The result is spectacular.
- I added to
the aft pedestal bay
the new CPFlight modules. Currently only the WXR
panel has no Prosim support.
- I added two
magnetic switches for the Yaw Damper and the Wing Anti
Ice. They are fully supported by Prosim737.
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November 2010
Quite
a few changes happened during this year.
- During the
FSWeekend show in November 2009 I got in touch with two
fellow cockpit builders from Sweden, Björn Harlin and
Lasse Lehman.
Lasse offered to build an aft pedestal for me which I
gladly accepted. I asked him to make a two-bay
version because of space reasons. See here
for the result.
- Since I
could not get the FO side for the old FlyEngravity
panels anymore, I decided to purchase their new
desktop set and rebuild everything.
- I met
another cockpit builder in The Netherlands, Martin van
Liempt. He has built a beautiful cockpit and is
very good in creating mechanical parts. I asked
him to create two engine cutout.
- Another
person in The Netherlands, Marty Bochane, is writing a
full 737-800 avionics suite. His aim is to make
it, within the limitations of Microsoft's FS9 and FSX,
as realistic as the real plane. I started to use
his overhead software Prosim737 (which is free of
charge) and I was immediately very impressed.
All the systems are modeled like the real deal.
For a while I used it instead of pmSystems but now I
have moved over to the full suite. It is still work in
progress but the results have been very
satisfying. If you are interested in Prosim take a
look at the site. Since Prosim allows to link
all its inputs and outputs to FSUIPC offsets, it's
very easy to change over. In my system I use a
FDS SYS-1 Card for which Prosim has currently no
native support. By mapping the Prosim actions
into the pmSystems FSUIPC offsets, it was very easy to
get the system working. The Prosim maps are
saved in an XML file.
- I combined
panel.exe and panel_console.exe into one program and
added support for Prosim.
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Phase 9 January 2010
As a
retirement gift my colleagues gave me an AWACS
seat. Although it does not have the B737 colors,
it sits and feels excellent. In fact, it's the
only part of my setup that has been part of a real
airplane.
During the
FSWeekend show in Lelystad I saw the beautiful
overhead frame from SimConstruct. Since I cannot
really justify its price I decided to build it myself
from materials that I could pick up at my local DIY
store. I am using 25 mm steel tubing, steel
fasteners and M5 bolts and nuts. The result is
very satisfactory. Although not as sturdy as the
SimConstruct unit, it does the job for me. Total
cost about €75 and lots and lots of hours.
Notice that I extended the frame construction around
the overhead, so it too became a solid piece.
My goal to
add an enclosure becomes now more feasible because I
can add to the frame in the future windows, ceiling
and side panels.
I noticed
in pmSystems all the support for a fire suppression
panel, so I decided to add one.
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Phase 8
August
2009
Because of the nice summer we had (and still have) in
Holland, I haven't much done to the flight deck. I
have added the lower DU and moved the radio's into a
temporary pedestal bay. I purchased the
FlyEngravity MIP annunciator decals, warning switches
and the new captain's six-pack. Because I am using
the old style MDF-based FlyEngravity MIP panels, it took
a lot of cutting to integrate these. The six-pack
looks wonderful.
I picked up
the Aircraft Controls Engineering 737 Yoke, everything
now looks better and better. Because the yoke is a
little bit farther positioned from the MIP, I tilted the
pedals about 30° backwards. This makes the toe
braking also easier.
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FlyEngravity
Warning switches and Captain's six pack
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Phase 7 - The aft overhead panel (March
2009)
Because of
the recent support for the aft overhead panel in
pmSystems I decided to add it it to my system.
Since I like to write software I did my own
implementation of the IRS panel. Because I am
using a FDS-SYS1 board which has 256 outputs I had
enough free outputs to drive all 25 annunciators, plus
the 32 Led's in the LED/Flap indicator.
It's not
clear to me at this point what to do with the audio
panel.
Not
everything is working at this point, except the
LED/Flaps indicator test switch, none of the warning
test switches do anything.
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Phase 6 - The current system and the future
(November 2008)
The system
is rather complete as you can see from the picture on
the right. The first officer's side is missing
but that's on purpose, mostly because of space
restrictions. You also see the motorized
throttle quadrant from CockpitSonic that really adds
to the immersion factor.
Future
projects in random order:
- add a
pedestal bay and move the radio's in there
- place a
small monitor next to the CDU for the lower DU
- get a
life-like yoke
- change
the 6-pack (brighter LED's + switches)
- add the
aft overhead panel
- build an
enclosure around the whole setup
- add more
backlighting (overhead, Throttle Quadrant)
- get
better annunciators on the MIP
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Phase 5 - The forward overhead panel
Being a
systems-type of person my hands itched to build the
forward overhead panel. For the actual panel I
choose FlyEngravity. I built a metal frame from
15 mm square aluminum tubes on which the 6 panels are
screwed. To interface the switches and
annunciators I selected the Flightdeck Solutions
FD-SYS1 board. It supports 64 inputs and 256
outputs. The outputs can drive a LED
directly. Sixty-four inputs is not really enough
but by omitting certain switches (e.g. VH NAV, IRS)
that don't do anything, plus combining switches (e.g.
Window Heat Side/FWD) there was no
problem. The number of outputs is more than
needed. Outputs come in blocks of eight; it is
best to use one output block per blue LED and put
nothing else on that block. Because of the high
current these LEDs draw they affect the intensity of
the others. A software program that comes with
the card allows you connect each input and output to
the proper Flight Simulator function, thus there is no
need to connect a switch or LED to a designated
connector pin.
The panel
has 9 dual brightness blue annunciators. I could
not get these to work properly with the FD-SYS1 board,
so I did this myself using 9 outputs that I had left
on a Phidget-64 board that I use to control the
pressurization panel.
There is no
simple solution for the AC/DC
panel and for the pressurization
panel, so I built these myself. Click on
the links for more information.
The software
that drives the panel is Project Magenta Systems
(pmSystems). The beauty of pmSystems is that
supports a scripting language that allows you to make
modifications to how the various systems
operate. For example, I added a few lines that
have the cabin temperature gauge display different
values depending on what is selected.
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Phase 4 - Moving over to Project Magenta
The beauty
of PM is that all the hardware that I had acquired was
supported. I only had to specify the COM port
number in the PM software and it worked. During
this phase I bought two new computers: a DELL XPS for
running Flight Simulator and the CDU. The other PC
was a Dell Inspiron 530 for running the ND and PFD, the
stand-by Instruments and the Weather Radar. From
the company I work for I got an old Dell Optiplex GXa
desktop which is used solely to run the EICAS.
I kept the
PMDG 737-800 but had to remove all the windows in the
panel file.
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Phase 3 - Running stand-alone
Until now I
had to sit behind my desk and "fly" with the aid of a
joystick and number of hardware modules. The
next step was more dramatic - I moved away from the
desk and built a stand-alone set-up. I purchased
from FlyEngravity the Captain and Center panels, a
Matrox TripleHead2Go, and four 17" monitors. In
addition I built a stand from MDF to hold the panels
and the CDU/Radio unit. The gear lever, the
autobrake switch and the various annunciators where
wired to a CPFlight MIP Interface board. By
undocking the FPD and ND to a separate monitor and by
going to the outside view (W), I had created a
fixed-base simulator that I could "fly" without a
keyboard or mouse.
As you can you
see in the picture there where still may holes to fill,
the most conspicuous being the EICAS screen and the
stand-by instruments. To fill the three big
round holes was easy, I purchased the Flight Illusion
standby instruments and I replaced the dummy flap
indicator by a working one.
At
this point I had to make a major decision - can I stay
with the PMDG solution or do I have to purchase software
that is more amendable for cockpit builders.
Except for key clicks, PMDG never released information
on how to interface to the 737NG. Interfacing to
the overhead functions and a number of MIP functions
would be impossible. I also tried for a
while to add another video card to the PC in order to
undock and show the EICAS. Unfortunately, I was
not able to make this a reliable solution. At the
end I decided to bite the bullet and purchase the
Project Magenta software. This software allows
interfacing to any hardware you can think of, and very
importantly, it can run distributed on different
networked computers. This allows for off-loading
the main computer that runs Flight Simulator
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Phase 2 - Adding hardware
At
the end of 2006 I was able to enter partial retirement
and with much more free time available I decided to
enter the path of building a home cockpit. One
of my requirements was that during the building
process I should be able to "fly" as much as
possible. After extensively researching what was
available, I decided start by purchasing the CPFlight
MCP and EFIS modules. They looked nice and were
able to work with the PMDG 737. I built a small
stand for them (it is scrapped now) so I could place
it as a one unit under the PC monitor. This was
real fun, I could turn and press real knobs and
buttons and the plane was turning, changing altitude
and so on. The hardware was able to control all the
MCP functions.
It didn't
take long to take the next step - the purchase of a CDU
and a number of radio modules. The CDU is from
FlyEngravity and could interface with the PMDG 737NG
Series via a dedicated driver. The CPFlight radio
modules are connected to the MCP and required nothing
special.
The beauty
of this setup was that I was able to "fly" without the
need to use either the mouse of keyboard. Flaps,
gear, brakes, rudder and throttle were handled from the
joystick. Only during startup I had to handle the
overhead panel, and during start and landing some
miscellaneous functions like Autobrake.
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Phase 1 - The start
Like
most other flight simulation enthusiasts I started of
with only a PC, a flight simulator program and a
joystick. In fact, my first flight simulator was
Fly! and I used it until it became apparent that it
had no future. During the Fly! years I had fun
with the PMDG add-ons like the Boeing 757 and
777. Another interesting add-on to Fly! was
Terrascene that allowed you, by downloading USCG data,
to generate very detailed scenery for US areas.
Since I had lived in Washington State, I recreated
everything west of the Cascades.
After Microsoft Flight Simulator 2004 came out I
decided to abandon Fly! (Fly2! by that time) and to move
over. It really became interesting for me when
PMDG released their 737NG Series. Before that I
had purchased Wilco's A320 but that was a
disaster. On my system the virtual cockpit was
totally unusable so I was glad that PMDG came with a
quality alternative. To date I am still using the
PMDG 737-800 albeit in a modified form - more about that
later.
On the
simulator I did a lot of "flying" with the PMDG 737-800,
the Flight1 Cessna 172 and later the PSS A320, both on-
and off-line.
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