MT-50 Multitouch Table
DIY Building Instructions
TABLE OF CONTENTS
MT-50 Multitouch Table DIY Building Instructions – Version 1.2. For comments or
questions you can contact us at: info@ideum.com.
GETTING STARTED
About the MT-50 Multitouch Table and DIY Building Instructions
Page 03
THE TABLE FRAME
Assembling the Aluminum Frame
Installing the Bottom Panel
Page 04 - 06
Page 07 - 10
THE COMPUTER
Assembling the Computer
Computer Specifications
Page 10
Page 11 - 12
POWER, ILLUMINATION, AND PROJECTION
Bottom Panel I/O and Power Faceplates
Applying Infrared Light Strips
Connecting Low Voltage Electrical
Applying Projection Film to Glass and Masking
Installing the Glass Surface
Installing the Projector
Installing & Calibrating the Mirror
Installing the Cameras
The Smart Strip
The Side Panels
Page 13 - 14
Page 15 - 16
Page 16
Page 16 - 17
Page 18
Page 21 - 22
Page 23 - 25
Page 25 - 27
Page 28 - 30
Page 30 - 32
SOFTWARE
Tracking Software
Page 33
PARTS AND SOURCES
MT50 Parts
Bosch Aluminum pieces
Page 34 - 39
Page 39- 40 MT-50 Multitouch Table DIY Building Instructions–Version 1.2 - 4/5/11 - Page 2
ABOUT THE MT-50 & DIY BUILDING INSTRUCTIONS
The MT50 is a projection based 50” multitouch table. It is 31” high with casters and
meets ADA (American’s with Disabilities Act) standards. The MT50 supports a
resolution of 1280x720. Its frame is made of aluminum, the shell is steel, and surface is
thick tempered glass. The table is virtually indestructible and is designed for use in busy
public spaces. We’ve literally dropped bowling balls on it to test its toughness.
Ideum (www.ideum.com), a New Mexico-based company, built and sold MT50
multitouch tables between 2009 and 2010. There are dozens of these tables installed in
museums, research labs, and a few are even installed at Fortune 500 companies across
North America. The MT50 has been discontinued, as of March 2011 and has been
replaced by a LCD based table, the MT55 (you can learn more about the MT55 on the
Ideum website: http://www.ideum.com/products/multitouch/). It is worth mentioning
that of the techniques used in the MT50 are still used for large-scale installations such as
walls, multiple projector tables. While the MT50 documentation is no longer available
on the Ideum site. A description, videos, and reviews can be found on the
GestureWorks website:
http://gestureworks.com/features/supported-hardware/ideum-mt-50-multitouch-table/ The instructions for the MT-50 are being released as part of the Open Exhibits, museum
software and hardware initiative. Open Exhibits multitouch and multiuser software is
free to students, museums, nonprofits, and US Government agencies. Please visit:
openexhibits.org for more details.
If you have any suggestions for how we might improve these instructions, please let us
know.
The Ideum and Open Exhibits Team
Corrales, New Mexico
MT-50 Multitouch Table DIY Building Instructions–Version 1.2 - 4/5/11 - Page 3
Assembling the Aluminum Frame
The main frame for the MT-50 is made of Bosch aluminum. The entire kit
for the MT-50 can be purchased from our Bosch Supplier in the United
States, Pacific Integrated Handling. If you would like to order the kit, please
contact Marianne Scarafiotti (or someone in her office) and let them know
you’d like the Ideum MT-50(200-05320) kit. Pacific Integrated Handling Inc
Marianne Scarafiotti 480-379-0100 (phone) Ideum MT-50(200-05320) kit The kit will come with all the needed aluminum strut, screws, T-nuts, and
gussets that are needed to assemble the aluminum frame.
If you have ever played with an Erector set, you will be able to put together
the Bosch aluminum frame very easily.
To assemble, you will need the following tools:
1 Metric 2.5 Hex Key
1 Metric 4 Hex Key
1 12mm Socket w/ wrench
The different thicknesses of aluminum strut will be referred to in
millimeters. For the most part, the sizes in this kit are 45x45mm,
30x30mm, 20x20mm, and 20x40mm. This size convention also works for
the Gussets (the triangular pieces that are used to connect strut). There
will be 45mm gussets, 30mm, and 20mm.
MT-50 Multitouch Table DIY Building Instructions–Version 1.2 - 4/5/11 - Page 4
You will need to refer to the drawing and strut diagram to put the frame
together. The strut chart will show thickness, length, quantity, and a part
letter. Use the part letter and the diagram to figure out which piece goes
where. Do not attach the wheel assemblies until you have the bottom
panel on.
Part F on the diagram needs to be slightly modified so that the wheels can
be attached to it properly. A ½” hole will need to be drilled as shown in
the picture below:
MT-50 Multitouch Table DIY Building Instructions–Version 1.2 - 4/5/11 - Page 5
MT-50 Multitouch Table DIY Building Instructions–Version 1.2 - 4/5/11 - Page 6
Installing the Bottom Panel
Once the frame is complete, you will want to install the bottom panel. The
bottom panel will have 6 120mm fan cutouts, and have cut-outs for 2
boxes; a power box for the incoming 120v power 2x4 handy box), and a
cut-out for the Input/Output/Power Switch box (2 gang metal box).
To attach the bottom panel to the frame, you will have to orient the panel
correctly on the frame. There is one side of the frame that uses Part C
(45x45mm strut with a notch cut out). That is the side that the projector
will be on. If you were standing on that side of the frame, the bottom panel
cut out for the smaller electrical box should be on the right side, the larger
electrical box cut out on the left side, both on the opposite of the side you
are standing on.
Place 14 M5 screws (not included with Bosch kit) and T-nuts into the
outside holes around the perimeter of the panel. Once all of the screws
and T-nuts are in, flip the entire Bosch frame upside down, and place the
panel on with the orientation described above. Line the T-nuts up so that
they all fall into the middle channel on the strut. Tighten up all of the
screws around the perimeter so that the bottom panel is snug and lined up
with the frame.
You can now attach the wheels that came with the kit, and should flip the
entire assembly on its side to install the fans.
MT-50 Multitouch Table DIY Building Instructions–Version 1.2 - 4/5/11 - Page 7
MT-50 Multitouch Table DIY Building Instructions–Version 1.2 - 4/5/11 - Page 8
To install the fans, you will need the following:
24 M3 12mm screws with locking washers and nuts
6 Silicon Vibration Absorbers
6 120mm plastic fan filter
6 120mm fan
To create a good flow of air through the table, 3 fans should be blowing air
in, and 3 should be pushing air out. If you were standing on the same side
of the frame as Part C (notched cut out on strut) then the fans on your left
side should be positioned to blow air up and into the table. The other 3
should be positioned the opposite way, blowing the air down and out.
Place the silicon vibration absorber on the bottom of the fan, place the fan
on top of the bottom panel along the screw holes, place the plastic fan filter
on the bottom of the bottom panel, and secure the entire assembly with
the M3 screws (not included with Bosch kit). Do this for all of the fans.
To install the electrical boxes and I/O box, you will need to do the
following:
The electrical box and I/O box are going to be facing down. You will need
to drill holes in the side of the boxes to allow them to attach to the strut
that is on the side of their cutouts.
Place the electrical box face down on the bottom panel just below the
cutout. Mark the side of the electrical box where the middle channel in the
strut is. Use that mark to drill holes on the long side of the boxes.
MT-50 Multitouch Table DIY Building Instructions–Version 1.2 - 4/5/11 - Page 9
Before attaching the boxes to the strut, some minor electrical work needs
to happen with the two 2x4 handy boxes. One of the boxes will be facing
downward in the cut out. The second 2x4 handy box will be facing
upward.
Remove one of the ½” knockouts on each box, and attach a 1/2” Romex
connector.
Cut about 2 feet of SO cord, and run between the two boxes. The amount
of cable between the boxes can be very short, just make sure you have
plenty of cable coming out of each box to wire up the receptacles later on.
Make sure one box is facing up and the other facing down and tighten
Romex connectors.
Use small 8mm T-nuts and accompanying screw to attach the boxes to the
strut.
Assembling the Computer
Below are the specs for the computers that we include in our tables. Parts
for this computer are definitely variable, EXCEPT for the IEEE1394 card.
This card (since there are limited PCI and PCIE lanes on the small system
board) needs to be Dual Channel/Dual Port, 1394A, and we’d recommend
that it was a card that had a Texas Instruments chipset. The chipset could
cause problems if you are using a camera such as the PT Grey FireflyMV.
The emphasis on this kind of card is due to the cameras. If multiple PT
Grey FireflyMV cameras are on a single channel, you will overflow the 1394
MT-50 Multitouch Table DIY Building Instructions–Version 1.2 - 4/5/11 - Page 10
bus, and cause something (usually the tracker) to go crazy, or the system to
give you a lovely blue screen error.
If you intend on using USB cameras such as the PS3Eye, then additional
1394 cards are not necessary.
The form factor of the computer is very small. We would recommend you
use the case we have listed (or something very similar) to place the system
in. The small form factor is needed to fit a high end system in the table
without taking up room that would affect the IR lighting and projected
image.
Computer Specifications
The MT50 standard computers have the following hardware:
Intel i7 930 2.8GHz processor
NVidia GeForce 470 Graphics Card
4GB DDR3-1600 RAM
2 300GB 10,000 RPM SATA hard disk drives in a RAID 1
configuration(using the system boards soft RAID system)
Windows 7 Professional
2 dual channel IEEE1394A cards
920 Watt Power Supply
Custom power switch set up
Many of these parts can be changed out. You will need the 920-Watt
power supply (this also powers the fans and IR lights) and the 1394 cards.
Using a lower amount of RAM and a slower processor may result in a
slightly sluggish computer.
MT-50 Multitouch Table DIY Building Instructions–Version 1.2 - 4/5/11 - Page 11
An i7 is not necessary, but at least a quad core of some sort is
recommended.
2GB of RAM will work, but a minimum of 4GB is recommended.
Hard drive space is at the builder’s discretion. If you plan on having a lot of
media, go for large drives. If you are worried about redundancy, double
the drives up and set up a RAID.
Most tracking software still runs on Windows XP, so that could also be an
option for the OS.
The power switch on the computer case has been disconnected and
hooked directly into the blue LED power switch on the bottom of the
table.
On most computer system boards, there should be 2 pins for On/Off
power button function, and 2 pins for LED power for the On/Off buttons.
Refer to the system board manual to locate those pins.
The power switch on the MT-50 is located on the bottom 2-gang panel that
also has the USB, Audio, HDMI, and RJ-45 connections on it.
MT-50 Multitouch Table DIY Building Instructions–Version 1.2 - 4/5/11 - Page 12
Bottom Panel I/O and Power Faceplates
There will be two different sized square cutouts with the electrical boxes
you installed earlier.
The plates and panel mount cables can be ordered from www.datapro.net.
The double gang box will be for the I/O connections and the power button.
It has the following cut outs:
2x USBA
1x CAT5
2x HDMI
2x 3.5 mm stereo
1x custom circular hole (7/8" diameter)
Attach the panel mount cables and the power switch to the plate. You will
now have to get the other ends of the cables through the knockouts on the
MT-50 Multitouch Table DIY Building Instructions–Version 1.2 - 4/5/11 - Page 13
2 gang electrical box. Once you have all of the cables through the box,
attach the face plate to the electrical box with the provided screws.
The single gang box will be for the main power inlet for the entire system.
We use a C14 inlet (same type of plug you’ll find on the back of any
computer). This face place can also be ordered through www.datapro.net.
This plate has one C14 cut out on it.
MT-50 Multitouch Table DIY Building Instructions–Version 1.2 - 4/5/11 - Page 14
Applying Infrared Light Strips
There are three rows of high-intensity infrared LEDs in the table on the
lighting rig. Each row is wired independently of the others, so if one
connection or strip fails, the others will still work. With less infrared
illumination, the table will be impaired but will still function.
The LED strips that we use come from Environmental Lights. With the
lighting setup we show in the diagrams about 2 ½ rolls ended up being
used, so you will need to purchase 3 rolls. There are many different types
of IR LED strips, but we have found that the High Brightness with 5050
LEDS work the best for this application. You can find these strips here:
http://www.environmentallights.com/products/13104/irrf850-5050-60-reel.
These LEDs come in rolls and are backed with an adhesive. To install the
LEDs, you’ll first want to measure the LEDs on the aluminum lighting rig.
The strips need to be slightly staggered to ensure enough room for the
connections.
The lengths of the strips do not have to be exact. If you look at the
drawing, you can see how we applied them to the aluminum. When you
make a cut on the strips, make sure you do it on the designated cut line or
you could damage the circuit.
Once you’ve cut a strip, check to make sure that it is aligned correctly
before adhering it to the rig. The edges of the strips on the outsides of the
struts should align with the edge of the strut, and middle strips should be
centered on the strut. When applying the strips after you’ve cut them,
make sure that the polarity matches up with the other strips to make
MT-50 Multitouch Table DIY Building Instructions–Version 1.2 - 4/5/11 - Page 15
wiring easy. We usually just kept the positive side to the outside edge.
Check the polarity on the strips by looking for the little + and -.
Now that the strips are attached to the rig, you can solder the strip
connections. The LED strips have small round pads that can be soldered
to. Cut the wire to the correct lengths and silver the ends of the wire.
Place a piece of shrink-wrap on the strip before soldering and put a tiny
amount of flux on each connection. Get a small bead of solder on your
soldering iron and quickly solder each wire to the connections, then heat
the shrink wrap to shrink it, making sure the wires are separated.
Once all of the cables are connected to the lighting strips, route the cables
so that they end up near the computer power supply. You will then need
to place 4 pin Molex connectors on each set of wires so that they can be
connected to the power system.
MT-50 Multitouch Table DIY Building Instructions–Version 1.2 - 4/5/11 - Page 16
Connecting Low Voltage Electrical
At this point, you should have the electrical leads from the fans and from
the lights routed so that they reach near the computer. Use a 4 square
electrical box as a junction point for all of the connections. Route two of
the connectors from the computer power supply that have 4 pin Molex
connectors on them into the box. Use the Molex connectors to plug in the
fans and lighting wires. The fans should have come with 3 pin-to-4 pin
adapters.
Applying Projection Film to Glass and Masking
On our tables, we use custom pieces of glass with projection film on one
side. The glass is 10mm thick with a fine micro-etch on the top surface. The
glass is etched in a way that doesn't adversely affect the way that light
passes through the glass while providing haptic feedback. The micro-etch
also provides a reduction in reflected light and an increase in viewing angle
to almost 180 degrees.
The diffusion material on the underside of the glass is a custom projection
film selected to provide the best performance with short-throw projectors.
The material actively scatters the light, giving the screen a low incidence
angle (meaning the image is viewable from a wide range of angles) with
evenly distributed brightness.
Applying the projection film to the glass can be tricky with this setup.
MT-50 Multitouch Table DIY Building Instructions–Version 1.2 - 4/5/11 - Page 17
What we have listed is what we use, and have found to work best for this
application. Of course there are always other methods, some much
cheaper.
We used Spyeglass (www.spyeglass.com) SpyeSmoke film on the MT-50,
cut to 34.5” x 53.5”.
This film worked best with the short throw projector we used, and had
little to no hot spotting. You can apply this film yourself by following the
instructions included, but we used a professional tinting company to apply
ours, and to apply the black mask that borders the edge.
Once the film is applied, we masked off the outside area of the glass to be
painted black. The mask was 4 15/16” off of each edge. You can use
painter’s tape and some plastic to protect the inside area of film from being
painted. We came to these mask dimensions for a few reasons; it gives us a
50” diagonal image, and it covers up the projector that is installed on the
side of the table.
Peau Productions offers a good page that shows other diffusion material
options. You can find that here http://peauproductions.com/diffusers.html
Installing Glass Surface
Before installing the glass into the table, you’ll need to put a rubber seal on
the steel mantle to help seal the table against liquids and cushion the glass.
We used 3M 2228 Moisture Sealing Electrical Tape. Cut and apply the
strips along the 4 pieces of the top mantle.
MT-50 Multitouch Table DIY Building Instructions–Version 1.2 - 4/5/11 - Page 18
With the mantle placed in the aluminum frame without the glass, mark
precisely where the holes on the inside of the mantle are on the aluminum
strut. After you have marked those holes, remove the mantle and place
8mm T-nuts with an M4 hole exactly where you made the marks. To hold
the T-Nuts in place, you can wedge some masking tape around the nut.
Once the tape is applied and the T-nuts are placed into the aluminum
frame, you are ready to place the glass in. This will take 2 or 3 people.
Place the two shorter pieces of the mantle into the frame. Place the glass
into one end, and rest that end in the aluminum frame. Lift the other side
of the glass up and place the other short piece on the glass. Lift the entire
piece of glass out, and place the two longer pieces of the mantle on the
glass, and lower the entire construction into the aluminum frame. Once it
is in, secure the top mantle with M4 screws into the T-nuts that were
placed into the frame previously.
MT-50 Multitouch Table DIY Building Instructions–Version 1.2 - 4/5/11 - Page 19
MT-50 Multitouch Table DIY Building Instructions–Version 1.2 - 4/5/11 - Page 20
Installing the Projector
The table uses an InFocus IN-1503 short-throw projector. With a
projection throw ratio of 0.7:1 (projection distance: image width) it's one of
the shortest-throw projectors on the market, and, after testing several
different models we've found that this projector has the most predictable
optical behavior.
You can use a different projector, but you’ll want to make sure it’s a shortthrow projector; otherwise, the image being projected may be quite a bit
smaller.
To hold the projector in place, we use a custom steel plate that is screwed
into the table’s aluminum frame. The projector must be carefully screwed
onto the plate.
MT-50 Multitouch Table DIY Building Instructions–Version 1.2 - 4/5/11 - Page 21
There are 3 holes in the middle of the plate, and 3 holes on the bottom of
the projector. Between the plate and the projector, you will want to use
¼” nylon spacers with a non-threaded hole in the middle. Place the spacers
over the holes on the projector, and place the plate on top, lining up the
holes. Attach with 12mm M4 counter sunk pan head screws.
Once you have the plate and projector put together, you will need to
attach it to the aluminum struts marked H on the frame diagram. To attach
to this strut, the 4 outside holes on the plate will need an M4 screw with a
6mm T-Nut.
You will want to move the projector assembly as high up on the strut as
possible, but before you do that you will need to attach the 90 degree
HDMI connector and the 90 degree power cord. The power cord should
slide into the cut out in the strut (Part C).
Once the projector is installed, hook it up to the computer, and power it
on.
You will want to change some basic settings on the projector so that it
doesn’t reset keystone, power off, etc. Change the following settings:
AC Power On
ON
Auto Source
OFF
Power-Up Source
HDMI
Auto Keystone
OFF
Replacement bulbs for the projector can be ordered here.
MT-50 Multitouch Table DIY Building Instructions–Version 1.2 - 4/5/11 - Page 22
Installing & Calibrating the Mirror
The mirror used in the MT-50 is a first surface mirror. First surface mirrors
have no gap between the object and its reflection, because the mirror
coating sits on the top of the glass rather than on the rear of the glass. This
also prevents ghosting, which occurs when the projector image bounces off
the bottom of the glass and back through. First surface mirrors are more
prone to scratching, so as you take off the plastic sheets protecting the
mirror to place it in the frame, it’s important to be careful.
Assemble 3 sides of the mirror rig. There will be some small L brackets in
the Bosch kit that will allow you to assemble the 45 degree pieces. You
may want to leave the protective film on the mirror for the next few steps.
Once 3 sides are assembled, slide the mirror into the rig. Place the 4th side
on and secure all of the setscrews. Pull up the protective film around the
perimeter of the mirror, and apply the thin rubber stripping that came with
the Bosch kit. This will keep the mirror from sliding around inside the rig.
MT-50 Multitouch Table DIY Building Instructions–Version 1.2 - 4/5/11 - Page 23
Once the mirror is placed in the frame, two rows of infrared LED strips
need to be applied to the frame. These LEDs are wired in one circuit. See
the wiring diagram to see how the mirror LED strips are placed and wired.
The mirror is connected to the frame by the 4 mirror turrets (Part N).
Four 20x20mm gussets will be used to attach the mirror to the turrets, and
to be able to make adjustments to the angle of the mirror. The four gussets
need to be slightly modified. There are 2 tabs on each side of the gusset
that usually sit in the middle channel of the strut. Remove these tabs on
one side so that the mirror will be able to sit flat on that side of the gusset.
Attach the gussets to the inside of the turrets and place the mirror on the
gussets. Loosely screw the gussets to the mirror rig.
Power on the computer and start up the projector. You should have
configured the computer to output to the projector with a resolution of
1280x720.
The IN1503 projector has a physical zoom knob that should be zoomed in
as far as possible. You will now have to adjust the gussets attached to the
turrets and mirror to get the projected image to fit within the masked off
area on the glass.
Since you will be moving the mirror at different angles, you will have to
adjust the keystone setting on the projector. You can access the keystone
settings on the projector by using the remote control.
MT-50 Multitouch Table DIY Building Instructions–Version 1.2 - 4/5/11 - Page 24
Press the menu button, press select on the Basic Picture option, and scroll
down to Keystone. Try starting at a keystone of about 54, and then adjust
the mirror from there.
Installing the Cameras
Three PT Grey Firefly MV (Firewire version) cameras are used in the MT50 to track the finger movements on the table surface. The cameras come
in a small plastic case with a mount assembly. Before mounting the
cameras, they need to be taken apart to install the band pass filter.
Remove the case of the cameras to reveal a small circuit board.
MT-50 Multitouch Table DIY Building Instructions–Version 1.2 - 4/5/11 - Page 25
There will be a lens mount attached to the board by two screws. Remove
the lens mount to reveal a rubber grommet and a small clear lens. You will
also see the small CMOS sensor in the middle of the board. This is
essentially the ‘lens’ of the camera, so be sure not to allow anything to
come into contact with it.
Remove the rubber grommet, and take out the clear lens. Replace the clear
lens with the band pass filter. Reassemble the camera.
Once the plastic case is back together, you can then put on the camera
lens, and attach the mounting hardware.
Use a 20 x 20 gusset to attach each camera to the camera rig. You will
need to drill out one side of the gusset with a ¼” drill bit to enable it to fit
the camera screw hole. Using a rubber washer to prevent the gusset from
damaging the side of the camera, screw the gusset onto the camera with an
M6 screw. Put a screw with 20 mm T-nut into the other side of the gusset
and screw the camera to the rig.
MT-50 Multitouch Table DIY Building Instructions–Version 1.2 - 4/5/11 - Page 26
Camera spacing is very important to ensure stitching and may need to be
adjusted once the tracking software is installed. See the attached diagram to
get an idea of the rough spacing that should be used if using a 3-camera
system.
The cameras are powered and controlled via FireWire. When the camera
feed is cropped within the tracking software, it actually communicates with
the camera's BIOS and tells it to ignore those extraneous pixels, making the
processing very stable and lowering the amount of bandwidth needed to
run the cameras. The middle camera runs on its own Firewire card, since it
MT-50 Multitouch Table DIY Building Instructions–Version 1.2 - 4/5/11 - Page 27
has a larger area to monitor, and the outer two share one, ensuring that
the camera feed won't exceed the available bandwidth, which can cause the
OS to throw a stop code (Blue screen of death) and force the computer to
be restarted.
The Smart Strip
Once all of the systems are put together and hooked up properly, you will
want to set up the Smart Strip.
On the Smart Strip, there is 1 Control outlet, 2 Always Hot outlets, and 4
Switched outlets.
What you will want to do is plug the computer directly into the Control
outlet. Plug the projector into one of the switched outlets.
We do this so that once the computer turns on via the power switch, the
projector will automatically power on and off when the computer is on/off
(as long as you have set the projector settings as mentioned before).
MT-50 Multitouch Table DIY Building Instructions–Version 1.2 - 4/5/11 - Page 28
The Smart Strip has a small control on it that may need to be adjusted from
time to time depending on incoming voltage. The Smart Strip switched
outlets are controlled by a relay in the strip. When the control device (the
computer) is turned on, it activates the relay, which turns on the switched
outlets (fan power supply, audio amplifier, and touch overlay.) Occasionally,
if there is a slight voltage change, the relay may not turn off or back on.
If the switched outlets never turn on:
1. Turn on the computer. It is plugged into the CONTROL OUTLET.
2. Turn the ADJUST dial clockwise a very small amount and wait 2
seconds. Repeat this process until the “Switched Outlets” indicator
light is off.
3. Turn on the computer. If the SWITCHED OUTLETS turn off, you’re
done.
If the switched outlets never turn off:
1. Turn off the computer.
2. Turn the ADJUST dial counterclockwise a very small amount and
wait 2 seconds. Repeat this process until the “Switched Outlets”
indicator light is off.
MT-50 Multitouch Table DIY Building Instructions–Version 1.2 - 4/5/11 - Page 29
3. Turn on the device that is on the CONTROL OUTLET. If the
SWITCHED OUTLETS turn on, you’re done.
Do not force the adjustment dial to turn more than 1 complete turn.
The Side Panels
The MT-50 shipped with powder coated cold-rolled steel panels. This
worked out excellent in busy public areas, as the panels are extremely hard
to damage, and easy to clean with the powder coat.
Below are the specifications for the side and end panels. We had these
custom made locally with a metal fabricator. These specifications can also
be used with any other material that you choose to use. The steel panels
are attached to the main Bosch frame with M5 button head screws and
8mm T-nuts.
MT-50 Multitouch Table DIY Building Instructions–Version 1.2 - 4/5/11 - Page 30
MT-50 Multitouch Table DIY Building Instructions–Version 1.2 - 4/5/11 - Page 31
MT-50 Multitouch Table DIY Building Instructions–Version 1.2 - 4/5/11 - Page 32
Tracking Software
Once all the systems are up and working, you will need to install some
camera based tracking software.
On the MT-50, we used NuiTeq’s Snowflake Suite. This software
supported three PT Grey cameras and offered an easy way to get the
cameras stitched and calibrated. You can download a demo of Snowflake
Suite at http://nuiteq.com/
Alternatively, there is an excellent open source project called CCV that
NUI Group Community has developed. You can check out CCV at
http://ccv.nuigroup.com/.
This software package is free of charge. Unfortunately, with the camera set
up the MT-50 uses, you will not currently be able to use 3 PTGrey cameras
with CCV. There are other solutions though, and are quite a bit cheaper.
You can have 4 PS3Eye cameras running in the table and will work well
with CCV. Modified PS3Eye cameras can be purchased online though Peau
Productions http://peauproductions.com.
Within the NUI Group Forums http://nuigroup.com/forums/ you can find
lots of information regarding CCV.
MT-50 Multitouch Table DIY Building Instructions–Version 1.2 - 4/5/11 - Page 33
MT55 PARTS
Part
Description
Part #
Qt
Link
Case
Lian Li
MicroATX
PCV351B
1
Mothe
rboard
EVGA X58
MicroATX
121-BLE756-TR
1
Video
Card
EVGA
GeForce
GTX 470
012-P31470-AR
1
Memo
ry
Corsair
Dominator
6GB(3x2GB)
CMP6GX
3M3A160
0C8
1
Proce
ssor
Intel i7 930
BX80601
930
1
Proce
ssor
Heatsi
nk
Zalman
120mm
CNPS990
0ALED
1
http://www.newegg.com/Product
/Product.aspx?Item=N82E16835
118046
Hard
Drive
Western
Digital
VelociRaptor
300GB
10,000RPM
WD3000
HLFS
2
http://www.newegg.com/Product
/Product.aspx?Item=N82E16822
136322
Set up with a
software RAID1
1394a
Card
StarTech 4
port
PCI1394
MP
1
http://www.newegg.com/Product
/Product.aspx?Item=N82E16815
158038
Needed for PTGrey
Cameras. MUST BE
PCI
Optica
l Drive
Lite-On DVDRW
iHAS324-98B
1
http://www.newegg.com/Product
/Product.aspx?Item=N82E16827
106334
Power
Supply
Enermax
Revolution85
+ 920W
ERV920E
WT
1
http://www.newegg.com/Product
/Product.aspx?Item=N82E16817
194079
Operat
ing
Syste
m
Windows 7
Professional
FQC00730
1
http://www.newegg.com/Product
/Product.aspx?Item=N82E16832
116756
WiFi
Rosewill
802.11 b/g/n
RNXEasyN1
1
Blueto
oth
Azio USB2.0
adapter
BTDV201
1
http://www.newegg.com/Product
/Product.aspx?Item=N82E16811
112222
Small form factor
case that will fit
nicely with other
components.
http://www.newegg.com/Product
/Product.aspx?Item=N82E16813
188051
http://www.newegg.com/Product
/Product.aspx?Item=N82E16814
130550
http://www.newegg.com/Product
/Product.aspx?Item=N82E16820
145295&cm_re=corsair_6gb-_20-145-295-_-Product
http://www.newegg.com/Product
/Product.aspx?Item=N82E16819
115225
Multiple molex
connectors used to
power IR lights, fans,
as well as the
computer.
http://www.newegg.com/Product
/Product.aspx?Item=N82E16833
166041
http://www.newegg.com/Product
/Product.aspx?Item=N82E16833
MT-50 Multitouch Table DIY Building Instructions–Version 1.2 - 4/5/11 - Page 34
340012
Intern
al
Fans
Enermax
Magma
120mm
Projec
tor
120m
m
Fans
120m
m
Silicon
e
Damp
ener
Infocus
IN1503
IN1503
SilenX
120mm
IXP-7618
Nexus
Dampener
SA-120
120m
m Fan
Filter
120m
m Fan
Grill
80mm
Fans
80mm
Fan
Grill
Camer
as
IR
Filters
UCMA12
2
1
6
http://www.newegg.com/Product
/Product.aspx?Item=N82E16835
214001
http://www.newegg.com/Prod
uct/Product.aspx?Item=N82E
16824140094
http://www.newegg.com/Prod
uct/Product.aspx?Item=N82E
16835226013
Bottom Panel Fans
http://www.newegg.com/Prod
uct/Product.aspx?Item=N82E
16811995048&cm_re=120m
m_fan_filter-_-11-995-048-_Product
n/a
6
Stainless
Steel Fan
Grill
http://www.newegg.com/Prod
uct/Product.aspx?Item=N82E
16811995045
n/a
6
Enermax
Magma
80mm
Rosewill Fan
Guard
UC-MA8
2
RFG-080
2
PTGrey
Firefly MV
Bottom Panel Fans
http://www.newegg.com/Prod
uct/Product.aspx?Item=N82E
16811996014
6
bGears Fan
Filter
Used inside
computer case.
http://www.newegg.com/Prod
uct/Product.aspx?Item=N82E
16835214006
http://www.newegg.com/Prod
uct/Product.aspx?Item=N82E
16811988018&cm_re=80mm
_fan_grill-_-11-988-018-_Product
http://www.ptgrey.com/produc
ts/fireflymv/fireflymv_usb_fire
wire_cmos_camera.asp
FireFlyM
V
Bottom Panel Fans Need 6 , this product
is a 2 pack, so 3
would be the qty.
Bottom Panel Fans Need 6 grills, this
product is a 2 pack,
so 3 would be the
qty.
Projector Fans
Projector Fans
Firewire Cameras for
tracking.
3
Thor Labs
MT-50 Multitouch Table DIY Building Instructions–Version 1.2 - 4/5/11 - Page 35
Camer
a Lens
Tamron
13FM22I
R
Firewir
e
Cable
1'
Firewir
e
Cable
3'
3 Pin
Y Fan
Conne
ctor
3
http://www.bhphotovideo.com
/c/product/414234REG/Tamron_13FM22IR_13
FM22IR_1_3_2_2mm_F_1_2
.html
Wide angle lens
1
http://www.pacificcable.com/F
irewire.htm
Cable for Camera
2
http://www.pacificcable.com/F
irewire.htm
Cable for Camera
6
http://www.newegg.com/Prod
uct/Product.aspx?Item=N82E
16812189063&nm_mc=OTCFroogle&cm_mmc=OTCFroogle-_-Cables-_Link+Depot+Corp.-_12189063
3 Pin
Fan
Cable
48"
4
http://www.svc.com/fc3348.html
3 Pin
Fan
Cable
36"
1
http://www.svc.com/fc3336.html
3 Pin
Fan
Cable
24"
2
http://www.svc.com/fc3324.html
3 Pin
Fan
Cable
12"
4
http://www.svc.com/123to3ex.
html
Smart
Strip
Infrare
d
Lights
Bits Limited
SCG3
1
Environment
al Lights
irrf8505050-60reel
3
http://www.amazon.com/gp/pr
oduct/B000P1QJXQ/ref=pd_l
po_k2_dp_sr_1?pf_rd_p=486
539851&pf_rd_s=lpo-topstripe1&pf_rd_t=201&pf_rd_i=B000
6PUDQK&pf_rd_m=ATVPDKI
KX0DER&pf_rd_r=0JK9XX8S
1BSMR15QBXYY
https://www.environmentalligh
ts.com/products/13104/irrf850
-5050-60-reel
Fan Cable Splitter
For bottom panel
fans
For bottom panel
fans
For bottom panel
fans
For bottom panel
fans
7 outlet Switchable
power strip
3 Packages
MT-50 Multitouch Table DIY Building Instructions–Version 1.2 - 4/5/11 - Page 36
http://www.firstsurfacemirrors.
com/
1/8” Thick 8”x10”
First Surface Glass
Mirro
1
http://www.lowes.com/pd_709
65-4278232_4294821892_4294937
087_?productId=3129407&Ns
=p_product_prd_lis_ord_nbr|
0||p_product_quantity_sold|1
&pl=1&currentURL=/pl_Electr
ical%2BBox_4294821892_42
94937087_%3FNs%3Dp_pro
duct_prd_lis_ord_nbr|0||p_pro
duct_quantity_sold|1
For splicing low
voltage wiring.
1
http://www.lowes.com/Produc
tDisplay?partNumber=55761427-8752&langId=1&storeId=10151&productId=
3129183&catalogId=10051&c
mRelshp=rel&rel=nofollow&cI
d=PDIO1
Cover for Deep Box
1
http://www.lowes.com/pd_724
66-53911-2G4D123410L_4294821892_42949370
87_?productId=3318584&Ns
=p_product_prd_lis_ord_nbr|
0||p_product_quantity_sold|1
&pl=1&currentURL=/pl_Electr
ical%2BBox_4294821892_42
94937087_%3FNs%3Dp_pro
duct_prd_lis_ord_nbr|0||p_pro
duct_quantity_sold|1%26pag
e%3D13
For Faceplate with
Input/output
connectors & power
switch.
First Surface
Mirros
Mirror
2
Gang
Squar
e
Metal
Box –
Deep
2
Gang
Squar
e
Metal
Cover
4”
Squar
e
Electri
cal
Box 2
Gang
MT-50 Multitouch Table DIY Building Instructions–Version 1.2 - 4/5/11 - Page 37
2
Single
Gang
Handy
Box
12 inches
SO
Cable
Rome
x
Conne
ctor
15Am
p
Recep
tacle
Single
Gang
Recep
tacle
Cover
½ inch
http://www.lowes.com/pd_709
67-4278660_4294821892_4294937
087_?productId=1098497&Ns
=p_product_prd_lis_ord_nbr|
0||p_product_quantity_sold|1
&pl=1&currentURL=/pl_Electr
ical%2BBox_4294821892_42
94937087_%3FNs%3Dp_pro
duct_prd_lis_ord_nbr|0||p_pro
duct_quantity_sold|1
For 120V
Receptacle & C14
power inlet.
Old power cords, old vacuum
cords. Or Lowes/Home
Depot.
This is used to go
between C14 inlet
and the receptacle,
each in a different
handy box.
For Single Gang
Handy Boxes
2
1
http://www.lowes.com/pd_725
98-334-CR15GY-SPL_0__?productId=1099243&
Ntt=15amp+receptacle&pl=1
&currentURL=/pl__0__s%3F
Ntt%3D15amp%2Breceptacle
For one Handy box
1
http://www.lowes.com/pd_709
55-427864X_4294821893+4294965
809_4294937087_?productId
=3129399&Ns=p_product_pr
d_lis_ord_nbr|0||p_product_q
uantity_sold|1&pl=1&currentU
RL=/pl__4294821893%2B42
94965809_4294937087_%3F
Ns%3Dp_product_prd_lis_or
d_nbr|0||p_product_quantity_
sold|1&facetInfo=Metal
Receptacle Cover
MT-50 Multitouch Table DIY Building Instructions–Version 1.2 - 4/5/11 - Page 38
C14
Power
Inlet
Furutech
FI-10
Gold 15A
IEC
Chassis
Inlet
Power
Facepl
ate
Single Gang
Stainless
w/C14 cutout
Double Gang
Stainless
Input/
Output
Facepl
ate
M4
Screw
s
M4
Nuts
M4
Lock
Wash
ers
M5
Screw
s
M4
Screw
s
http://www.revolutionpower.c
om/p/Furutech+FI10+Gold+15A+IEC+Chassis+
Inlet/161/
Main Power Inlet
see
drawings
http://www.datapro.net
C14 Cutout on
Single Gang
Stainless plate
see
drawings
http://www.datapro.net
Custom Cutout w/
multiple cuts
Black Buttonhead
16mm
1
Screws for
Fans
24
Hardware Store
for Fans
24
Hardware Store
for Fans
24
Hardware Store
for Panels
60
Hardware Store
Black Buttonhead
12mm
for Projector
3
Hardware Store
Countersunk 16mm
Nylon
Space
rs
for Projector
3
Hardware Store
¼” thick, inside
diamter large
enough for M4 screw
Rubbe
r
Mastic
Glass Mantle
4
rol
ls
Hardware Store
Black rubber mastic
that glass sits on.
3M 2228
BOSCH ALUMINUM PIECES
Part Number
3842992897
8981992026
8981992026
8981992026
Description
45x45R -/- Len: 673.1mm
(26.5)
45x45 -/- Len: 1257.3mm
(49.5)
45x45 -/- Len: 1257.3mm
(49.5)
45x45 -/- Len: 774.7mm
(30.5)
Qty
Part
Letter
Special Desc.
4
A
Main Frame
3
B
Main Frame
1
C
Main Frame
4
D
Main Frame
MT-50 Multitouch Table DIY Building Instructions–Version 1.2 - 4/5/11 - Page 39
3842523561
3842523570
3842992888
3842990720
3842992888
3842992891
3842992891
3842992891
3842992888
3842992888
3842992888
3842992888
3842517243
3842535626
3842992888
3842992888
3842530283
3842523511
3842523528
M4X12SHCSZ
3842530281
3842541230
45x45 gusset with
fasteners
45x90 gusset with
fasteners
20x20 -/- Len: 584.2mm
(23)
30x30 -/- Len: 584.2mm
(23)
20x20 -/- Len: 203.2mm (8)
20x40 -/- Len: 801.69mm
(31.56)
20x40 -/- Len: 1016mm
(40)
20x40 -/- Len: 1282.7mm
(50.5)
20x20 -/- Len: 774.7mm
(30.5)
20x20 -/- Len: 152.4mm (6)
20x20 -/- Len: 438.2mm
(17.25)
20x20 -/- Len: 285.6mm
(11.24)
20x20 end cap black
MITERED CORNER
CONN 6MM
20x20 -/- Len: 774.7mm
(30.5)
20x20 -/- Len: 403.2mm
(15.87)
T-NUT 10MM M5
20x20 gusset with
fasteners
30x30 gusset with
fasteners 8-8
M4X12 Socket Head Cap
Screw Zinc
T-NUT 10MM M4
80mm caster, ESD,
lockable
16
E
4
F
4
G
2
4
H
I
Main Frame, holds lighting
rig
Main Frame, holds projector
plate
Lighting Rig Support
2
J
Lighting Rig
1
K
Lighting Rig
1
L
Camera Rig
2
4
M
N
2
O
2
4
P
Camera Rig
Mirror Turret
Mirror Rig/45degree cuts on
each end
Mirror Rig/45degree cuts on
each end
Caps for Mirror Turrets
4
4
Q
Connectors for Mirror Rig
Bottom mid rig(computer,
mirror)
3
100
R
Center for Mid Rig
100
S
10
T
40
40
4
U
MT-50 Multitouch Table DIY Building Instructions–Version 1.2 - 4/5/11 - Page 40