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Questions of using multiple sets of DLP4500 and DLP350

Yuecheng Shen
Prodigy 20 points
Other Parts Discussed in Thread: DLP4500, DLPC350

Hi,

We recently purchased a lightcrafter 4500 and unpacked it. By only using part of them, i.e., the DLP4500, the DLP350, and the system board, we can display images after connecting the board to a PC using mini-USB.

We searched the website and found out that the DLP4500 and DLP350 can be purchased separated. However, we could not find any information about the system board. So, if we want to use multiple sets of DLP4500 and DLP350 to display different images at the same time, what kind of interface do we need to get? Can we use a single board to achieve this or do we need multiple system board? Where can we get these system board? 

Thank you.

Yuecheng Shen

  • 0
    TI__Mastermind 30875 points

    >> However, we could not find any information about the system board

    Please look at this page http://www.ti.com/tool/dlp4500-c350ref http://www.ti.com/lit/zip/tidc086 

    >> So, if we want to use multiple sets of DLP4500 and DLP350 to display different images at the same time, what kind of interface do we need to get? 

    You can use either pre-stored option, or you can use direct streaming of image contents to mulitple hardware. Streaming would be easier if you have source that can split video and send to each light crafter at the same time.

    >> Can we use a single board to achieve this or do we need multiple system board?

    You meant single system board? No. You need a DLPC350 controller board per DLP4500 DMD. You can put multiple DLPC350 on same board then connect DLP4500 for each DLPC350.

    >> Where can we get these system board? 

    You can buy from our distributors http://www.ti.com/tool/dlp4500-c350ref#buy 

    Regards,
    Sanjeev

  • 0 in reply to Sanjeev
    Prodigy 20 points
    Hi Sanjeev,

    Thanks for your information, and they are really helpful.
    However, I still have confusions about the board, which you might be able to help me to clarify.

    The system board that I am talking about in the thread is not the DLPC350 controller board, but the board that supports multiple DLPC350, as well as the DLP4500 DMD.

    For the current Lightcrafter we purchased, the board only contains one interface that connects to the DPLC350 controller, and lots of interfaces that not needed for our purpose (i.e., light engine, LED, etc). I was wondering that if we can order a board that only contains several interfaces to connect multiple controller and one interface to connect to a PC or a FPGA?

    Thanks for your help in advance.

    Yuecheng
  • 0 in reply to Yuecheng Shen
    TI__Mastermind 30875 points
    Primarily the DLPC350 has two connections USB and I2C.

    I2C - You can configure DLPC350 in two device addresses, to make this work you can have max two DLPC350 on one I2C bus, by having multiple I2C buses you can have x2 DLPC350 devices X number of I2C buses .

    USB - The USB uses HID protocol and the DLPC350 has fixed USB VID and PID. The GUI source code allows talking to 1st device that is connected, the driver doesn't allow communicating more than one device at the same time. You look for software to communicate USB HID devices having same VID & PID.

    Regards,
    Sanjeev
  • 0 in reply to Sanjeev
    Prodigy 130 points

    Dear Sanjeev,

    Can you please tell me how to operate multiple pattern mode for DLP4500 on the same computer via USB? Currently if I have two plugged in, the GUI will only operate one of them. This is because the PID is the same I believe?

    Best, Trevor

  • 0 in reply to Trevor Wardill
    TI__Guru 54705 points

    Hello Trevor,

    Sanjeev has already answered the question in the response just above your question:

    USB - The USB uses HID protocol and the DLPC350 has fixed USB VID and PID. The GUI source code allows talking to 1st device that is connected, the driver doesn't allow communicating more than one device at the same time. You look for software to communicate USB HID devices having same VID & PID.

    What you are attempting to do cannot be done over USB as it is currently set up.  However, Sanjeev did provide a suggestion using I2C, with customized code to communicate with them.

    Fizix

  • 0 in reply to Sanjeev
    Prodigy 155 points
    Dear Sanjeev,

    Is there a Unique device ID per Projector so that I could identify each device separately?

    I tried using the 'serial number' that goes together with VID and PID but the numbers that return are same for all four of my projectors. I believe TI must have a way to identify each device right...

    Thank you in advance,

    John