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SmartBOB controllers and dedicated accessories / Re: PMDX-424 and constant Motion Underrun Error
« on: July 24, 2019, 05:50:41 PM »
I just ran across this post. I am in the process of building a new cnc with the PMDX424 board and Mach4 software. My thought was the same as yours to run with a fanless pc. I had installed a ITX motherboard with a quad core integrated atom cpu. I have been battling this setup for weeks and getting underruns in Mach4. I was thinking this was a issue with the OS as I was running a Win10 OS and have installed the OS several times. I finally swapped out the pc to another pc that was a ITX motherboard with a AMD 6 core cpu and i am not seeing the underrun issues anymore. Hope this helps.