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DLP4500: one computer controls 4 DLP lightCrafter 4500 using usb at the same time

Sam HU
Prodigy 70 points
Part Number: DLP4500
Other Parts Discussed in Thread: DLPC350,

Hi,

How can one computer control 4 DLP lightCrafter 4500 using USB at the same time?

I found that there are only 2 options for DLP ID including the VID, PID and serial number. VID and PID are same. The serial numbers are LCR2 or LCR3. How can I change the serial number to be diffrent from LCR2 and LCR3, then my computer can identify the 4 DLPs? Or, if the flash firmware file sets the usb serial number of the DLP, would please TI provide a flash firmware file that sets different serial numbers  from LCR2 and LCR3?

Thanks.

Sincerely yours,

Sam HU

  • 0
    TI__Mastermind 30875 points

    Hi Sam HU,

    At present there is no interface available in the DLPC350 firmware to accept and update the serial number. Also the GUI software that is using USB HID don't have implementation to enable connecting multiple LightCrafter 4500 with single GUI. 

    There was discussion on this topic https://e2e.ti.com/support/dlp__mems_micro-electro-mechanical_systems/advanced_light_control/f/924/p/430685/1877188 ; in past there were such requests but it was yet to be prioritized. You could explore using i2c interface and putting them on different i2c bus. 

    Regards,

    Sanjeev

  • 0 in reply to Sanjeev
    Prodigy 70 points
    Hi, Sanjeev,

    Thank you for your replying.

    Currently, I already use a c++ program to control 2 DLP4500 with differrent serial numbers LCR2 and LCR3 successfully. I will not use the TI GUI software. I think, if TI can provide a firmwire just with serial numbers different from LCR2 and LCR3, then I can control 4 DLP4500 using my own c++ program. It will take a lot time to write and test a c++ program controlling DLP4500 by I2C. Unless there are already I2C c++ codes.

    Thanks.

    Sincerely yours,

    Sam HU