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Original question:

DLPDLCR3010EVM-G2: How to enter binary pattern mode?

DLP3010EVM-LC: Can this do 1440Hz 1-bit patterns or not?

Abe Karnik1
Prodigy 80 points
Part Number: DLP3010EVM-LC

Dear TI,

Can you kindly confirm directly if the DLP3010EVM-LC can do 1440Hz 1-bit patterns from a 60Hz 24-bit external feed?

I have been trying to use the GUI tool to configure this but the UI doesn't want to play ball.

I was really hopeful that an EVM built nearly 8 years after the DLP-Pico v2 would be trivially easy to configure in the same way the Pico did, (4 commands over I2C and it would be purring away like a kitten delivering 1440Hz 1-bit), but I am finding the new kit frustratingly hard to work with.

Thanks.

Abe

  • 0
    TI__Expert 5485 points

    Hi Abe,

    Yes, this EVM supports 1-bit 1440 Hz over external video. Can you please explain what issue you're facing?

    Regards

    Azad

  • 0 in reply to Azad
    Prodigy 80 points

    Hi Azad,

    We have an external video stream (which is bit-packed as 24-bit 60 Hz frames) and we would like to command the kit to output this as 1440Hz 1-bit monochrome frames.

    We are using DLPComposer.LightCrafter.exe v2.1.0.7 to set the output mode.

    However, in the Light Control panel, we are not able to set framerate at times (sometimes it defaults to 120Hz  and disabled),

    If it gets set somehow, the software is forcing us to set the pre-exposure dark time, exposure time and post-exposure dark times as values that are too large

    We do not need pre/post exposure times. We also don't need "exposure" time per se, but I can understand that this may need to be set (I am not sure if this should be set to 1000000/1440 = 694us)

    Can you help us sort this problem out?

    Thanks.

    Regards,

    Abe

  • 0 in reply to Abe Karnik1
    TI__Expert 5485 points

    Hi Abe,

    The Frame Rate cannot be set directly, the GUI calculates the Frame Rate based on the exposure and dark times provided by the user.

    Note that dark times are required, this EVM cannot project patterns without pre-exposure and post-exposure dark times. For more information refer to this FAQ: 

    For 1-bit 1440 Hz, the sum of exposure and dark times should be 694us. The timings in this case would be 197/462/35 us (pre-dark/exposure/post-dark).

    Regards

    Azad

  • 0 in reply to Azad
    Prodigy 80 points

    Hi Azad,

    I will give this a try. While the dark time is not ideal, but we can try to work with it.

    Thanks.

    Abe

  • 0 in reply to Abe Karnik1
    Prodigy 80 points

    Hi Azad,

    Yes, that worked great. However, I am not able to figure out the order of bit-packing.

    Is it R0-7,G0-7,B0-7?

    Thanks.

    Abe

  • 0 in reply to Abe Karnik1
    TI__Expert 5485 points

    Hi Abe,

    It's B0-7, G0-7, R0-7.

    Regards

    Azad

  • 0 in reply to Azad
    Prodigy 80 points

    Hi Azad,

    Thanks for the help.

    Regards,

    Abe