Hi,

I have a HobbyBoards relay card based on DS2408, used with LinkUSB

I used a routine (unconditionally) updating PIO.0 through PIO.5 every
minute.

I observed that PIO.6 and PIO.7 would be activated at random intervals,
typically a few times per day or less.


I attempted
* use all free pairs for a better ground line
* plug the LinkUSB directly into the HB card
* change from perl + OWNET to python + pyownet

Nothing helped reliably.

I than changed the code to read owserver first, and update only when
needed, which reduces owserver writes from 6 per minute to a few times
per day.

Since then I have not seen any unwanted activation of PIO.6 and PIO.7.

(Other owserver actvity is reading mainly temperature sensors, every minute)





Arne


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