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Simple circuit to load static image to DMD

Alexey Petrushin
Prodigy 140 points

Hi,

I want to use DMDs for optical communication, where a single mirror will represent a single communication channel. For this purpose I need to load a static image to DMD which sometimes can be changed (once a day/week ). I am looking for a simple DMD control circuitry which would be suitable for this application.

I could use LightCrafter but since I need to control more than 300 DMDs the option to use 300 LCs is not affordable.  

I would like to understand:

1)      does the simple circuit for static image loading exist? what are the minimum requirements?

2)      is it possible to use one LightCrafter to run 300 DMDs displaying static images?

Thank you

Alex

  • 0
    Intellectual 750 points

    Alex,

    As a minimum, you will need the C300 and associated components to drive each DMD, which comprises most of the Driver Board of the LightCrafter. What you will need then is essentially an RGB video input and some control logic to load each C300 with new data and freeze the data via a IIC accessible register in the C300. Creating enough unique I2C addresses for that many systems will take some extra logic.

    To avoid possible memory corruption errors, you may want to consider refreshing the data more frequently.

    We have a driver board solution that may be a fit for you - please private message me and I can send you the details.

    Adam Kunzman

    Keynote Photonics