• State Resolved
  • Locked Locked
  • Replies 3 replies
  • Subscribers 26 subscribers
  • Views 365 views
  • Users 0 members are here
Support feedback
Options
Options
Related

This thread has been locked.

If you have a related question, please click the "Ask a related question" button in the top right corner. The newly created question will be automatically linked to this question.

24Bit Interface for Lightcrafter

Lukas Reihs
Prodigy 20 points
Other Parts Discussed in Thread: DLPC300

Hello,

Is there a possibility to interface the DLPC300 on the Lightcrafter with 24Bit RGB Data without the need for creating a new pcb? 

Our embedded processor is able to deliver 24Bit RGB and other needed peripherals (I²C, IO's) but we want to be sure about the Interface to the DLPC300.

Thank you and best regards

  • 0
    TI__Genius 9935 points

    Lukas,

    Welcome to the DLP & MEMS E2E forum.

    Yes - it is possible to connect an external processor - but I'm not sure if it could be done without developing a new PCB. In any event, doing so requires a fairly high level of circuit and systems knowledge. You would be replacing the LightCrafter system board, the top board from the DLP LightCrafter stack, and using the connector J7 to the driver PCB.

    Please have a look at the schematics for the LightCrafter, which are available from http://www.ti.com/tool/dlp3000-c300ref. Look at the schematic for the driver board: http://www.ti.com/lit/ml/dlpr002/dlpr002.pdf. Look at J7, system interface connector. All of the signals are on this connector.

  • 0 in reply to Pascal DLP
    Prodigy 20 points

    Hello Pascal,

    Tank you for your fast response. I am studying the schematics and the board layout of the lightcrafter for a while now, but I have still some problems with some points.

    1.Is it able to do the startup sequence by a small MSP430(which will also handle the LED's) and then send only the 24Bit RGB Input from our main processor to the  DLPC300?

    2.We are planning to use a single 5050 RGB LED as Light source. Is there also a feedback light sensor needed?

    3.Are there ressources about the needed Feedback from the LED's from the LightCrafter board? It is a little mystery to me what is the function of this.

    4.Is it possible to aquire a simple prototype board and a optical part from one of TI's design houses at a manageable price?

    Thanks in advance

    Lukas

  • 0 in reply to Lukas Reihs
    TI__Genius 9935 points

    Lukas,

    The DLP LightCrafter is a "reference design". This means that we have made available the schematics, the BOM, the FW, and source code. You are free to utilize this information in any way which helps you to develop your own application or product.

    If you need design help, we refer you to one of our DH partners. See http://ti.com/mems and look under "Getting Started". Click on "DLP Design Houses".

    To answer your questions;

    1) It is possible to use a MSP430 for startup and house-keeping. However, the LED sequencing is normally handled by the DLPC300 controller chip. If you want to control the LEDs from the MSP430, you can certainly do so, but you will then be responsible for the synchronization and all of the details of LED timing and management.

    2) 3) There is no feedback light sensor required, nor is there software implemented in the reference design code to handle this. The LED feedback which you may have seen referenced is temperature only, to control a fan if needed.

    4) The DLP LightCrafter is the EVM/development kit for the DLP3000 chipset. I doubt that you will be able to get prototype boards anywhere near as inexpensive as the LightCrafter development kit. Again, I refer you to our Design House partners for further discussion on this.