Very neat! Glad you got it all working.

Jon.

On Saturday, February 20, 2021 at 10:49:21 PM UTC newxito wrote:

> The little project is now working. It’s not the most exciting gadget of 
> the world but at least I learned something about USB connectivity. 
> When the PC goes to sleep or is turned off, the MCU gets a signal from the 
> FT230X IC and turns off the high voltage. 
> With the 3 nixies turned on, the consumption is about 300 mA, so no 
> problem. 
> I’ve programmed a little service for the PC side that sends the 
> performance counter data even when nobody is logged on. 
> To get 99% CPU usage, I let Blender render the classroom demo.
>  
> I will put the board into a 3D printed case and that’s it. Since, 
> surprisingly, everything works as expected, there will be no revision 2... 
> but maybe an IN-13 version...
>
>

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