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I'm glad this stuff is useful to others and it's not just my weird requirements

My testing has gone well and everything works as expected! Thanks.

Understood!

I'll give it a test over the coming days

Hi Andrew, Just about to implement some code using the new registers, I see for RLY_ON (&off) write is used, I'm sure there is a reason for this being different than writebit of the standard on/off commands. If I am to keep RLY_0 alive, resetting the timer what is required, something like the below?...

Brewery. So you were close enough!

Pun intended?

No.... to the point I'm completely missing it!?

Excellent, I'll get a couple more boards purchased ASAP, thanks for your help

That would be perfect, thanks for the distillation! In the meantime I have stacked two relay sets on top of eachother and have the non timed output relay set powered by a timed relay on the other set (that I kept active by a timed pulse), this gives me the fast switching and failsafe that I require....

Thanks Andrew, remember the sub 1 second is not for an actual switching of the relay it's a fail safe so that if a poll update to keep the relay activated it will deactivate as a fail safe as per my above convocations with you. (Sorry, I'm just thinking of walk-arounds without changing the base syst...

Hi Andrew, Finally back to this part of my project again, I assume no firmware revisions have been made in newer releases? Is there any reason you need to have seconds rather than millis for the relay times. That would fix my issue. Entire seconds is a long time! If a float was used that would chang...

Thanks for taking the time to reply, I think that about covers it. I'm testing various i2c relay sets and this is about the most comprehensive and ultimately editable one so far. I'm from an industrial PLC control system background so I'm probably far to cautious about loss of control and Comms... a...

I would not recommend making repeated writes to the timer registers anyway. Although it is quite high, the NVM that is used to store the timer value only has a limited number of writes. I am only setting the timer once using another MCU that I can use the standard bus, it is not being repeatedly wr...