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control mirror array directly?

Shang Ma
Prodigy 60 points
Other Parts Discussed in Thread: DLPC350

Can we control those mirrors or DLP chips directly with a ROM/ASIC that can repeat a control pattern?

We have several lightcrafter 4500 now and we want to display 1bit gray images.

However, each time we reboot the projector, we need to re-upload the image under the "Pattern Sequence" tab. (don't know why)

Since we might expend our system shortly, we are wondering if we can burn these images to eeprom or other chip and connect it to the projectors somehow, so the system can be deployed very easily.

Any suggestions are appreciated.

Thanks.

  • 0
    TI__Expert 4720 points

    Hello Shang,

    Do you need to reload the firmware with your image to the board or reload the pattern sequence? I haven't experienced an EVM that forgets images that are loaded on its flash. 

    If you just need to relead the pattern sequence, you save save your settings as a solution file and attach it to a firmware file. After you upload that new firmware file the LightCrafter 4500 will automatically start with those settings.

    Best regards,

    Blair

  • 0 in reply to Blair Conner
    Prodigy 60 points

    Hi  Blair,

    Thanks for getting back to me. It is really helpful.


    One more thing, is it possible to use some kind of chip to save the DLP control signal for a pattern sequence and use multiple chips to control multiple projectors?  We want to simplify the deployment of multiple projectors.

    Thanks,

    Shang

  • 0 in reply to Shang Ma
    Prodigy 60 points

    One more note:


    In the 4500 User Guide, Page 21, last line of Section 3.1

    It says that we can display pattern sequence via system board connectors. How does that work?

  • 0 in reply to Shang Ma
    TI__Expert 4720 points

    Hello Shang Ma,

    To save the DLP control signal for a pattern sequence you'll need a DLPC350 controller for each DMD.

    To display pattern sequences via the system board connectors you'll need either a PandaBoard or some other processing board with an adapter to the LightCrafter 4500. Chapter 6 in the LightCrafter 4500 User's Guide describes all of the connections needed to control the EVM. 

    Best regards,

    Blair

  • 0 in reply to Blair Conner
    Prodigy 60 points

    Hi Blair,


    Many thanks for your help.


    One more question:

    This is what we did for our LightCraft, shown in the picture.

    I guess  the reason we lose data after reboot is that what we did doesn't save the image into the flash memory but the SRAM in DLPC350. Please let me if this is the case.


    And we will go with the steps in the User Manual Section 3.6.

    Thanks.

    Shang

  • 0 in reply to Shang Ma
    TI__Expert 4720 points

    Hello Shang,

    In order to save any settings to the DLPC350 firmware you must create a new firmware image with the necessary images and INI solultion file. Please reference Chapter 5 of the User's Guide to add an INI solution to the firmware file and Section 3.6 "Storing Images in Flash Memory" to add images to a firmware file.

    http://www.ti.com/lit/ug/dlpu011b/dlpu011b.pdf

    Best regards,

    Blair 

  • 0 in reply to Blair Conner
    Prodigy 205 points

    Many thanks, Blair.


    Really appreciate it.

    Shang