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DLP4710EVM-LC: Removing Red LED, and replacing Green LED with different Amperage

Part Number: DLP4710EVM-LC
Other Parts Discussed in Thread: DLP4710, TIDA-080005, , DLPA3005, DLPDLCR4710EVM-G2

Hi Similar to the following thread :

(Hi Nadine,

I would be interested in getting a copy for the 100% blue firmware for a similar application (I'd like to run the system with a monochrome LED at 15A and 5V (constant current configuration). Could you perhaps provide a bit of guidance on how to enable the blue LED via I2C along with setting the target amperage? I'm a novice on the scripting side of things and have only done some minor work via serial interfaces like Putty.

Also, if I wanted to drive the LEDs/optics of the system with an external power source (as Kenny was thinking at one point) is there a way to disable the need for the LEDs to be plugged in? Or is the easiest route to simply wire in dummy resistors to let the controller believe the LEDs are in and running fine?

Best Regards,

-David)

Im looking at getting several dlp4710 EVM-LC units and I have a few specific questions regarding the (Full high-resolution DLP® sub-system reference design for high-speed desktop 3D printing

TIDA-080005)
It appears there are a few of these for sale on mouser, however It does not specifically say if the projection lenses are for a short focal length 150mm.
1. Do these projectors come with those short focal length projection lenses, or do i need to purchase them separately from your 3rd party optical partners such as crystaldisplay?

2. I saw in previous response that the older version of this unit was an all glass optics system, is the new one also an all glass optical system?

In my application I want to completely remove the Red LED, and I want to replace the green LED with one that has 9A 3-4 volts.  

3. It appears that previous TI engineers provided new firmware to remove the red led can I also get this firmware update?

4. Does the firmware also have to be updated to change the amperage of the Green or Blue Led, or can this be changed in some version of the GUI?

Thanks for any sport on this.

  • Hi Kurt,

    Welcome to e2e forum and Thanks for showing your interest in DLP Technology.

    For your first query.. i will recommend you to directly contact the Optical module manufactures. This EVM is designed by YOI, you can get the contact information here

    We have only one version of this DLP4710EVM-LC system. Please share the link where you are referring the previous response.

    Yes we can provide you the firmware with Red disconnected.

    In our LC-GUI you can change the current of any LED but there will be a limit of max current.

    Thanks,

    Navneet 

  • Those are the links. 

  • Hi Kurt,

    Thanks for the links.

    Do you need any more support. As i already answered your queries, if anything is not clear please let us know.

    Thanks,

    Navneet

  • Is YOI  Young optics?

    I have a few more questions about leds if you can help.

    I read that it is possible to change the RGB sequencing. Is this also done in the the GUI or does it have to be changed in firmware?

    For example If I remove the red led will the sequence go  GBGB  without the blanking time for the red led?

    Also do you have any information on the Blue led that is used for the projector?

    I'm assuming it is a luminus devices 39 or 40 unit.  But Im interested in the wavelength and power out put.

    Lastly a more difficult question that may require more of an electrical engineer but for our application I found a blue led the CBM 120 But it requires up to 30 Amps.

    Im wondering if it is possible to use the red led 12A and the Blue led 16A  and wire them in parallel to power the single led.

    I have read about ideal diodes that can be used to join power supplies in parallel.

    1. Do you have any information on if this may be possible?

    2. Could the sequence of the LEDs be changed so that the Red and Blue occur at the same time so that they both could power the single larger led?

  • Also thinking about using the voltage going to an led to trigger a pwm to an extrenal led driver for the larger led that needs 30A.

    How are the leds currently triggered to fire in sequence?

  • Hi Kurt,

    Yes YOI is young optics.

    RGB sequencing still be there but we can change the order, which require the firmware change. 

    Osram P1W LED is used in DLP4710 G2 EVM.

    Currently our EVM design doesn't support 30Amps but if you go for your custom design then DLPA3005 can support upto 32Amps.

    No two sequence can not be turn on the LED at same time.. it would be in sequential order only.

    You may use the external LED driver, but i need to check because DLPA3005 has a feedback circuit in illumination block which expect some load on the DLPA while operating.

    sequence drives the 2 bit encoded signal to drive the all three LED. 

    Please let me know if you have any more questions.

    Thanks,

    Navneet

  • Can you supply me the firmware for removing the Red led?

    kurt_landin@yahoo.com

    Also If its possible can you also supply a second firmware for removing the red led and keeping the Green LED on all the time 100% duty cycle if that is possible.?

    I just purchased a dlp 4710 unit and would like to play with the firmware soon, thanks for the  help Navneet.

  • Can you also tell me what the difference is between the DLP4710-EVM  and the DLPDLCR4710EVM-G2?

    One is listed as a new product on mouser with a blue board and the G2 is cheaper and has a red board?

    Is there any major difference between the two? 

  • Hi Kurt,

    yes we can provide you the firmware. But it will take some time as we are busy with other stuff, i will let you know once i am ready with the firmware. I am sending you the friend request on e2e, i will share the firmware in private message.

    DLPDLCR4710EVM-G2 is only for display application, while DLP4710EVM-LC is mainly focus on light control applications but support display application as well. you need to select one based on your application.

    Thanks,

    Navneet