Relay module is active low...how to reverse that

Using Arduino General Electronics
15

dlloyd:

arusr:
I'm only using one of the relays, so I have a digital output from Arduino to relay 4.

Makes you wonder - why would you get a four relay module and only use one relay?

dlloyd:
Q

Paul__B:
My advice - find the actual problem and fix that.

A
problem: Re: Relay module is active low...how to reverse that

And - as so often turns out to be the case in these discussions, that is absolutely not the problem once you get down to it!

dlloyd:
Who talks like that??? (I'm from Canada) ;D

You would perhaps prefer "Oi!"?

KenTF:
You do realize that the relay switch has TWO positions. Instead of using the Normally Open position, you could use the normally closed instead. Then just change your program logic accordingly.

Again, you need to read the thread and understand what the actual problem is. If you do, you realise that is not a solution at all!

Actually, I am getting to quite like the new forum system in many ways (but not all). I have it set to display 25 topics per index page, and 25 messages per thread. And I have - largely accidentally - got rid of the botched "WYSIWYG" reply window function.