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DLP4710EVM-LC: dlp4710LC

Part Number: DLP4710EVM-LC
Other Parts Discussed in Thread: DLPC3479


I am an engineer, from Wintech Inc Which is a TI's Third party, and mainly responsible for DLP Engine development

Encountered a problem when developing 4710LC equipment

How can i set  Led current 0 mA  by using TI's GUI?

The minimum is 1423,

I can not set 0

Austin  shared Composer Project with me ,

The minimum is 51 in the project config

How can I set LED current from 0 to 1023?


the led is black when the current setting is 0

like this

out application is 3D printer

Thanks very much

Best Regards


  • Hi Jia,

    We set the minimum LED current above zero because of the inherent non-linearities of LEDs at low current. this lower limit is to "protect people from themselves". the image quality may become very bad.

    It is possible to remove this limit, and I have a composer project i can share with you. However you will need to adjust the current in DLP Composer under Projector Control -> Illumination -> RGB LED current. This is because the GUI software has a hard coded limit. 

    I sent you a friend request we can continue to discuss in private message.


    Arthur Brown