Make timers ON instead of OFF when inactive. [SOLVED]

[Jamie Brown]

Hello Fernando.

I read some place how to change the timer outputs to be ON instead of OFF when not active, by changing between FALSE and TRUE.

I can't find this post now, I have searched 37 pages on reef central, I don't think it was there

It is for return pump and skimmer.

Please can you show me where to look?

After I change this, does timer then turn item OFF for the set period, or does it act as normal?

I would like to get display to show ON without setting a time.

Thanks for your help.

Jamie.

[Fernando Garcia]

Hi!

I don't understand fine what you mean.

If you have a relay board with inverted logic, in others words LOW (0 V) to turn ON and HIGH (5 V) to turn OFF is better use an ULN 2803 for prevent change the code. The circuit is like this:

Best regards.

[Jamie Brown]

I am not sure how to explain, somebody else asked and your answer was not the same.

But I think I can re ask the question, when I set timer to ON at 00:00 and OFF at 23:59, then set ACTIVATED, this means pump will run 24/7, without stop?

Is this correct?

Thanks

Jamie

[Fernando Garcia]

Exactly!

[Jamie Brown]

Thank you Before closing this post, shall I ask here how to change back to centigrade, or shall I start a new topic?

[Fernando Garcia]

You already asked.

You need make inverse operation for this instruction.

Please mark this topic as solved.