Hi,
My project is going to be switching relays via a relay module which is active low. I would like to have manual override switch for each output. Can I simply put a switch between the output pin and ground?
Regards,
Les
You now that you're shorting the pin to ground, otherwise you wouldnt ask..
Maybe you want to add a resistor.
Do you have a datasheet of this module or a schematic ?
Without Resistor:
View attachment 4521
Thanks, that was the obvious answer, why didn't I think of it?
Regards,
Les