maybe, but it's all right
now i trying to connecte the dac 8bits with the arduino

Connect 8 digital i/o pins of the Uno to the 8 input pins of the DAC.

Set the 8 digital i/o pins of the Uno for output. Then just toggle them on and off as needed.

 

Connect 8 digital i/o pins of the Uno to the 8 input pins of the DAC.

Set the 8 digital i/o pins of the Uno for output. Then just toggle them on and off as needed.

I would have to say this depends on the DAC OP is using, it could be SPI interface, OP need to read the datasheet.

And I also suggest OP to understand a MOSFET datasheet, specially the the thermal section, and understand the thermal calculation.

 

I would have to say this depends on the DAC OP is using, it could be SPI interface, OP need to read the datasheet.

Good point that. I have done work with SPI, but with sensors.

I was just keeping it simple.