the idiot's guide to demo'ing the TI pico projector kit

according to UPS, my new BB and the corresponding TI pico projector
kit will arrive sometime tomorrow, upon which i would like to rip them
both out of their boxes, plug things in and be able to show a few
people light on the wall.

  keeping things as simple as possible, is there a 5-minute summary as
to how to do that? nothing fancy, i'll leave all the messing around
for this weekend. an image on the wall, that's all i'm after.

  has anyone here gone through that little exercise? is it written up
somewhere at the BB site? thanks.

rday

Congratulations with your purchase

Connect power and push the “on” button will display a DLP logo.

If you connect the beagle to the projector with the video cable (which is in the pico box - under the flap) and power both up, you will see a partial image displayed (The beagle start-up screen)

We are working to get videos approved for distribution and hope to have them with some simple documentation and a version of Angstrom up on the site soon…

keeping things as simple as possible, is there a 5-minute summary as
to how to do that? nothing fancy, i'll leave all the messing around
for this weekend. an image on the wall, that's all i'm after.

i just did this very setup this weekend .. was quite simple.

1. plug everything in. no problems here - my DLP came with the cables required
2. get the latest image from here:

  http://beagleboard.org/demo/angstrom/

Set up as per a standard SD install of the angstrom image ..

3. Note the details posted here by koen on how to set the bootargs to make the DLP projector used by the kernel on boot:

http://dominion.thruhere.net/koen/cms/pico-dlp-arrived

If all goes well you'll see the DLP logo when you turn it on, the Beagle logo when you turn on the BB, then Angstrom as it boots, and you'll get the login screen a few seconds later. Very easy setup, and I must say I do enjoy using my BB now that I can put the screen anywhere in the room! :slight_smile:

;

Congratulations with your purchase

Connect power and push the "on" button will display a DLP logo.

  so that would be an internal pico test pattern? eggcellent.

If you connect the beagle to the projector with the video cable
(which is in the pico box - under the flap) and power both up, you
will see a partial image displayed (The beagle start-up screen) We
are working to get videos approved for distribution and hope to have
them with some simple documentation and a version of Angstrom up on
the site soon....

  i think that's all i needed, thanks.

rday

actually, that still doesn't address what i was trying to do but i
think i just figured out what i was screwing up. i hooked up a
high-end video generator, plugged it into my projector, and sent a
perfectly standard VGA@60Hz test pattern. nothing.

  then i found the pico dev kit programmer's guide and i'm guessing i
can't just do the above -- i need to send the appropriate I2C commands
to have the projector read the incoming video. otherwise (i'm
guessing) it will be ignored.

  does that sound about right? as in, i can't just plug in and expect
the incoming VGA to be displayed without telling the projector to, you
know, display the incoming VGA signal. but i'm willing to be educated
on the subject.

rday

Op 27 jan 2009 om 17:09 heeft "Robert P. J. Day"
<rpjday@crashcourse.ca> het volgende geschreven:\

keeping things as simple as possible, is there a 5-minute summary as
to how to do that? nothing fancy, i'll leave all the messing around
for this weekend. an image on the wall, that's all i'm after.

i just did this very setup this weekend .. was quite simple.

1. plug everything in. no problems here - my DLP came with the
cables
required
2. get the latest image from here:

   http://beagleboard.org/demo/angstrom/

Set up as per a standard SD install of the angstrom image ..

3. Note the details posted here by koen on how to set the bootargs to
make the DLP projector used by the kernel on boot:

http://dominion.thruhere.net/koen/cms/pico-dlp-arrived

If all goes well you'll see the DLP logo when you turn it on, the
Beagle logo when you turn on the BB, then Angstrom as it boots, and
you'll get the login screen a few seconds later. Very easy setup,
and
I must say I do enjoy using my BB now that I can put the screen
anywhere in the room! :slight_smile:

actually, that still doesn't address what i was trying to do but i
think i just figured out what i was screwing up. i hooked up a
high-end video generator, plugged it into my projector, and sent a
perfectly standard VGA@60Hz test pattern. nothing.

then i found the pico dev kit programmer's guide and i'm guessing i
can't just do the above -- i need to send the appropriate I2C commands
to have the projector read the incoming video. otherwise (i'm
guessing) it will be ignored.

does that sound about right? as in, i can't just plug in and expect
the incoming VGA to be displayed without telling the projector to, you
know, display the incoming VGA signal. but i'm willing to be educated
on the subject.

Vga@60hz with a 27mhz pixclock "just works", no need for i2c

Regards,

Koen

hmmmmm ... that might be the problem. the video signal generator
(VSG) i'm using has a selection for VGA@60Hz, progressive, horizontal
rate of 31.5kHz (which is exactly what the spec sheet says for this
projector), but the pixel rate at that setting is listed as 25.2MHz.

  would that be enough of a discrepancy to cause a problem? i'm
looking and this VSG doesn't appear to have a selection that will
produce a pixclock rate of 27MHz.

rday

just to be as informative as possible, the users guide for the SVG i'm
using can be found here:

  http://www.quantumdata.com/pdf/880_ug_RevA29.pdf

and the format table starts on PDF file page 1403. the setting i was
testing earlier was "DMT0660" on p. 1407. if someone has a suggestion
for a more appropriate setting, i'm all ears.

rday