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Original question:

DLPDLCR230NPEVM: SETUP TROUBLE

DLPDLCR230NPEVM: Request for Assistance

Valkyrie Jacobs
Prodigy 20 points
Part Number: DLPDLCR230NPEVM
Other Parts Discussed in Thread: DLPC3436, DLP230NP

Dear Texas Instruments Customer Support Team,

I trust this message finds you well. I am reaching out regarding my recent purchase of the DLPDLCR230NPEVM, and I am in need of your assistance.

I have been diligently working to integrate the product into my setup, following all provided instructions and consulting various resources. However, I have encountered persistent challenges in achieving the desired functionality. Despite my best efforts, the product does not seem to be operating as expected.

I followed the quick start procedure in the User guide, the tutorial posted by Austin Snyder on the product forum and looked at other topics on the product forum.

  • The Raspberry Pi 4B was configured in a headless setup using TeamViewer with VNC as well as SSH (with the same result).
  • I ensured that I2C and SPI was enabled on the Raspberry.
  • Found and changed to the correct I2C bus address.
  • Ensured that the config.txt file was unchanged and correct.
  • An adjustable power supply was used to meet the voltage and current requirements (5V, 3A). Following some tips on the product forum I increased it to 5.2V to ensure that the power supply was sufficient. The D_P5V and Proj_ON indicators were both on. The projector however did not display the DLP logo followed by the test pattern image. It did seem to flash something, but it was too fast to see what exactly it was.
  • I also explored the possibility of it being that Wiring Pi was used in the gpio init script but seeing as this comment was two years ago, I assumed this issue is resolved and then looking at the indicators, I think I found part of the problem:
  • The D_INIT_B turned ON initially.
  • D_HOST_IRQ – stays ON.
  • D_DONE keeps flashing.

Looking at the user guide this may indicate that the DLPC3436 was unable to boot and might be stuck in a loop?

I reflashed the controller with the flash_write_controller and the flash_write_fpga program (for good measure). It flashed succesfully but indicated the files were identical to the original. I restarted the device and had the same issues according to the LED indicators and nothing displayed on the projector.

In light of these difficulties, I am seeking your guidance to explore potential solutions or alternatives. I appreciate your time and attention to this matter, and I look forward to hearing from you soon.

Kind regards,

Valkyrie Jacobs

  • 0
    TI__Expert 3905 points

    Hello Valkyrie,

    Welcome to the E2E forum. Thank you for your business!

    Yes, your system is not booting correctly, as indicated by HOST_IRQ not going low. It is possible that your system is damaged. Have you tried the entire set-up process with an older version of RPi? The most recent versions of RPi have had similar issues.

    Best,

    Maxine

  • 0 in reply to Maxine Cabrasawan
    Prodigy 20 points

    Hey Maxine,

    Thank you for your help!

    If you mean like the legacy version of Raspbian, then yes I did install it with the same result however.

    Kind regards,

    Valkyrie

  • 0 in reply to Valkyrie Jacobs
    TI__Expert 3905 points

    Hello Valkyrie,

    If an older version of Raspbian does not work, further debugging will be quite challenging to do remotely. When was this unit purchased? If you are within the warranty period, we can begin the RMA process for a replacement unit.

    Best,

    Maxine

  • 0 in reply to Maxine Cabrasawan
    Prodigy 20 points

    Hey Maxine

    I ordered it on Mon 2023/08/14 through my university and received it on Fri 2023/08/25. 

    Kind regards,

    Hanri

  • 0 in reply to Valkyrie Jacobs
    TI__Expert 3905 points

    Hello Hanri,

    I will check whether you are still under warranty and get back to you soon. Thank you!

    Best,

    Maxine

  • 0 in reply to Maxine Cabrasawan
    Prodigy 20 points

    Hey Maxine

    Thanks for your help, I'm awaiting your response in the mean time however, I was wondering about something else as well. I'm quite new to everything and was wondering if it would be possible to individually address the mirrors in a specific pattern? I've tried reading through the Software Programmer's guide and think most if went over my head. Any advice?

    Kind regards,

    Valkyrie

  • 0 in reply to Valkyrie Jacobs
    Prodigy 20 points

    Sorry if it's a stupid question :)

  • 0 in reply to Valkyrie Jacobs
    TI__Mastermind 23070 points

     Hello,

    Valkyrie Jacobs said:
    I ordered it on Mon 2023/08/14 through my university and received it on Fri 2023/08/25. 

    The EVM warranty period is 90 days. Unfortunately, it is out side warranty period.

    Valkyrie Jacobs said:
    I was wondering about something else as well. I'm quite new to everything and was wondering if it would be possible to individually address the mirrors in a specific pattern? I've tried reading through the Software Programmer's guide and think most if went over my head. Any advice?

    This chipset - DLPC3436 controller and DLP230NP DMD are designed for display application. The input image undergoes various processing to enhance visual experience for human eye.  This processing can be bypassed, as a result you cannot control individual pixel.

     If your application requires projecting structured light pattern, then please consider chipset & EVM from 3D scan and machine vision portfolio.

    3D scan & machine vision products | TI.com

    regards,

    Vivek