Breakout Board Speed Control

Hi,

I currently am trying to control my spindle's speed using my BoB's analog output pin. It provides a max of 0-10 V out. I want to use this signal to control my KBIC speed controller, but it requires an analog voltage that is between 0 and 7 V. I'm not sure as to how to go about doing this. I've looked at the documentation but am still confused. I just want to test to see if it is actually working, so if someone could just slap together a HAL file that is able to do this so that I can test it, I would be really appreciative. I want my spindle to go at a maximum speed of 1400 RPM, and on my BoB the analog out is pin 1.

Thanks,
Logan

Be careful as many KBIC speed controllers have a analog speed control
input that connect directly to line power, so requires an isolated analog
voltage source.