Quote:
Originally Posted by jhersh
This is not true. The analog inputs on the cRIO are not the same as the inputs on the old OI. They read voltage, not resistance. You can wire the output of a DAC to the analog inputs directly.
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If you wire the digital potentiometer as a voltage divider instead of as a rheostat , then it would work properly.
It would be slower then any of the other methods of digital communication, as the FPGA (or other processor) has to communicate with the potentiometer and then the pot has to change its value which takes time. It would also only be a one way communication method.