While most everyone knows how I like to mess with stuff, I decided the next step would be to outfit a hash board with digital pots so I could adjust the voltage and tinker more, I had a board extra to tinker with so I had some small boards fabed to hold them and hooked one up and it did work , somehow I let a ground wire get loose on the voltage going to the hash board from the raspi, well when this happened all I can guess is a lot of ground current went through the pot back to the raspi and caused the dc-dc to fry and then I guess it decided to let the mosfets short out and start a fire. Needless to say it is a hard fire to put out when you have it on a 100A supply.
I asked in another forum if anyone had and dead , broken hash boards that they might want to part with , I am sure we could come up with something of a deal. I'd like to get this to work maybe to determine the most efficient voltage to run at,
