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Streamlined scheme for adapting DLP 2010 EVM to near infrad

user1833088
Prodigy 80 points
Other Parts Discussed in Thread: DLPC150, DLPC3435, DLP2010NIR, DLPA2005, DLP2010

I would like to use DLP2010NIR in my research project, the requirement of which goes to a really simple regime: just to control the micro-mirrors at one binary pattern, and then switch to another after a certain time, and so on. Therefore actually many functions from the controller IC (e.g. color) is not really a consideration in my application. Besides, as my application is for research, at the current stage the solution only includes 2 DMD. Therefore I am looking for the most streamlined scheme to achieve such a goal, in the best case possibly well-connected to PC software such as labview. One possible approach is to use the DLP® LightCrafter Display 2010 EVM without the optical module, and design a PCB to put the DLP2010NIR. However, the EVM still has quite a little redundancy for such a trivial usage. Might there be any other possible scheme for this?   

  • 0
    TI__Genius 10495 points
    Hello User,

    Thank you for your interest in our DLP Technology. The DLP LightCrafter Display 2010 EVM is mainly for display application.
    You can use the DLPC3435 controller with the DLP2010NIR but the DLPC3435 doesn't have a pattern generator with rates up to 2880 Hz as the DLPC150 has.

    Are you planning on loading the binary pattern into the flash device of the DLPC3435 ? Are you looking for a board with only the DLP chipset on it ?

    Thanks,

    Nadine
  • 0 in reply to Nadine Estermann
    Prodigy 80 points
    Hi Nadine,

    Thanks a lot for your kind reply! As I took a look at the pattern rate of DLPC3435, I think it is for sure enough for me.

    I think the current requirement for me is to have a board (or multiple board) to do the following: power supply, controlling the DMD, put the DMD chipset, communication with a PC. I am still not sure if such a requirement needs to use a flash memory.

    BTW, the control of the DMD for me must be synchronized with controlling other devices (e.g. detector). For those devices, the control are mostly based on Labview. I am wondering what is the easiest solution to control instantaneous pattern of 1 or 2 DMD automatically with labview.
  • 0 in reply to Nadine Estermann
    Prodigy 80 points
    Additionally, I notice that for a DLP2010NIR, the angle of the micro mirror is supposed to be +-17 degree. When the DMD is in operation, is it possible to let some micro mirrors keep the angle of 0 degree?
  • 0 in reply to user1833088
    TI__Genius 10495 points
    Hello User,

    The DMD is controlled by the DLPC3435 you can not control the DMD manually. You can send I2C commands to the DLPC3435 to set up the Display size, change splash images etc.

    The current DLP LightCrafter Display 2010 EVM includes on the display board the DLPC3435, DLPA2005 and the flash device. The flash device contains the firmware for the DLPC3435 which is needed to power up the system. The flash device could also be used to store the desired patterns.

    The main board contains the MSP430 which drives Proj_ON and sets up the DLPC3435 for the HDMI input. It also includes the HDMI receiver (ITE chip) and the cypress chip (USB-Serial bridge chip).

    Do you want to store the binary patterns in the flash device or would you like to input them via HDMI ?

    Best regards,

    Nadine
  • 0 in reply to user1833088
    TI__Genius 10495 points

    Hello User,

    Unfortunately this is not possible. 0 degrees is not an addressable state. Can you please explain why you would need a 0 degree angle ?

    Best regards,

    Nadine

  • 0 in reply to Nadine Estermann
    Prodigy 80 points
    Thanks Nadine!

    So you mean that if I use labview to control DLPC3435 rather than the TI software, I can just use labview to send the required I2C commands via USB connection. Is this correct?

    As I said, I just would use the DMD (without LED or motor). In this case, when I use DLP LightCfafter Display 2010 EVM for DLP2010NIR, the only thing I have to do is to make a PCB to weld the DMD and with the corresponding flex cable connector, and then connect the flex cable to DLP LightCfafter Display 2010 EVM PCB, am I right?

    If so, I note that the package of DLP2010NIR is CLGA, if I want to weld the DMD manually by myself to the PCB, is it easy?
  • 0 in reply to Nadine Estermann
    Prodigy 80 points
    In my application, in the best case I expect the micro mirrors to have three states. I use some light to illuminate the DMD, and two detectors to detect the reflected light, with each detector facing one state (angle) of the mirror. However, I don't expect the two detectors receive all the light in total, or in other words, I want to blind some pixels, for which purpose I need a third state facing neither of the two mirrors. Do you know if there is any component or model to handle this in NIR?
  • 0 in reply to user1833088
    TI__Genius 10495 points
    Hello User,

    If you would like to use the cypress chip you have to have code for the cypress chip itself. I am not sure if the cypress chip supports Labview.

    Cypress has a SDK which is available under following link: www.cypress.com/.../usb-serial-software-development-kit

    The DLP2010NIR has a connector on the back. You can install the connector directly on your PCB or use a flex cable. So no welding is necessary.

    Do you want to design your own board or would you like to use the 2010 EVM Display board for prototyping ?

    Best regards,

    Nadine
  • 0 in reply to user1833088
    TI__Genius 10495 points
    Hello User,

    Are you planning on using only one DMD or two DMD's for your application ? Do you mind sharing the type of end application you are looking into we might be able to understand your problem better and come up with a better solution ?

    Thank you,

    Nadine
  • 0 in reply to Nadine Estermann
    Prodigy 80 points

    Thanks so much!

    I would like to use the 2010 EVM display board, however, the DMD on it is DLP2010 (different package), therefore I think the only way is I do another small PCB board by myself to weld the connector of DLP2010NIR. Am I right?

  • 0 in reply to Nadine Estermann
    Prodigy 80 points
    I have two designs for my application:

    In the first scheme, I use only on DMD-like component. However, I require this component to have 3 phases (angles). Do you think there is any other product that can fulfill such a requirement?

    In the second scheme, I will use two pieces of DMD for the binary control of mirror angle, and the movement of the mirrors on both DMDs has to be synchronized. In this case, I can do the job with two 2010 display EVM boards and control them with the same PC, am I right?
  • 0 in reply to user1833088
    TI__Genius 10495 points

    Hello User,


    As I mentioned earlier unfortunately the 0 degree angle state is not addressable. After turning the projector off the DLPC3435 is parking the DMD which puts all mirrors in a flat state 0 degree angle.  Depending on your time requirements you might be able to use this as your third phase.

    With two DMD's you can achieve the 3 phases without any problems. Yes you can use two DLPC3435 controllers and two DLPA2005 to control two DMDs at the same time.

    Please let me know if I can help with you the implementation.


    Best regards,


    Nadine

  • 0 in reply to user1833088
    TI__Genius 10495 points
    Hello User,

    The DLP2010 and the DLP2010NIR are having the same package FQJ with the same board to board connector on the bottom of the DMD.

    You can use the flex cable from the DLP LightCrafter 2010 EVM and connect the DLP2010NIR.

    Best regards,

    Nadine
  • 0 in reply to Nadine Estermann
    Prodigy 80 points

    Hi Nadine,

    Thank you! Do you mean that on the DLP LightCrafter 2010 EVM board where the socket for DLP2010 is welded, I can just unplug DLP2010 and plug DLP2010NIR? 

    However, I don't want to use the other parts of the optical module in the EVM other than the DMD (e.g. lenses, leds, motor, and the housing), instead I want the DMD to be directly exposed to the outside such that I can use my own optical components to project an image on the DMD in the lab, and use another own-designed optical elements to collect the reflected light at an reflected angle (say, 17 degree). Therefore the essential thing is to remove the housing and anything that may block my optical path and expose the DMD very well to my optical elements. Is it easy to remove these optical modules while keeping the DMD and its adaptive board? 

    Another possible option is that I use the  DLP LightCrafter 2010 EVM PCB (version without optical module). However, in this case I also miss the adaptive PCB with the socket and DMD. Does TI sell the adaptive board for the DMD and its socket? Otherwise I have to do a PCB by myself with flex cable connector and place for DMD socket, then weld the DMD socket on it and connect this PCB to the main board.

    Best wishes,

    Nick

  • 0 in reply to user1833088
    TI__Genius 10495 points

    Hello Nick,

    Yes you can remove the optical engine from the flex cable of the DLP LightCrafter Display 2010 EVM and connect the DLP2010NIR DMD.

    The current optical module of the DLP LightCrafter Display 2010 EVM is not designed for NIR but since you are planning on using your own optical module this is not a concern. The DLP2010 DMD is glued into the the optical engine housing so you can not remove the DLP2010 DMD but you can remove the flex cable and plug in the DLP2010NIR.


    The flex cable is directly connecting to our 2010 Display board. So I don't see the need for an adapter board.

    The flash device is currently located on the optical engine of the DLP LightCrafter Display 2010 EVM. You can remove the flash card from the optical engine and keep it connected to the flex cable. You can also don't use the flash card and add a flash device on the Display board. You would have to download the firmware again  in this case.

    Please let me know if that is understandable.

    Best regards,


    Nadine

  • 0 in reply to Nadine Estermann
    Prodigy 60 points

    Hello,

    I don't find information about pattern rate for DLPDLCR2010EVM.

    Please, help me.

    Best regards,

    Blaz

  • 0 in reply to user1833088
    TI__Mastermind 28005 points
    Hello User,

    A small PCB board is probably your best bet in this case. As a disclaimer, we only support the DLP2010NIR in being used with the DLPC150 controller. Because of this, you may encounter issues when using this particular combination of devices.

    Let us know if you need further assistance.

    Best Regards,

    Philippe Dollo