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DLPLCR4500EVM: DLPC350

Part Number: DLPLCR4500EVM
Other Parts Discussed in Thread: DLPC350

Hi TI experts,

I am trying to use the DLPC350 I2C1 (J17) connector on a DLPLCR4500EVM to turn off its LEDs.

I used an Arduino board as the master, and the following code to access the DLPLCR4500EVM

Wire.beginTransmission(0x1A);
Wire.write(0x10);
Wire.write(0x00);
Wire.endTransmission();

However, the LEDs were still on and not affected.

The Arduino master did find the DLPLCR4500EVM with an address of 0x1A.

Actually, I did similar work using the J11 connector on a 4710EVM successfully with 

Wire.beginTransmission(0x1B);
Wire.write(0x52);
Wire.write(0x00);
Wire.endTransmission();

Any thoughts, or suggestions?

Regards,

YC