Search found 3 matches

by sgtpepperaut
22 Jul 2017, 16:07
Forum: ESP Easy: Hardware
Topic: Generic Relay (active low)
Replies: 6
Views: 9495

Re: Generic Relay (active low)

with inverted logic of it works just the wrong way around. By default and "common sense" driving an input high would actuate the relay but unfortunately these common relais you see everywhere are driven with input low..
by sgtpepperaut
22 Jul 2017, 09:57
Forum: ESP Easy: Hardware
Topic: Generic Relay (active low)
Replies: 6
Views: 9495

Re: Generic Relay (active low)

a dirty fix was to invert the payload in the mqtt command however this is obviously bad practise (0 is ON and 1 is OFF...)
by sgtpepperaut
22 Jul 2017, 09:55
Forum: ESP Easy: Hardware
Topic: Generic Relay (active low)
Replies: 6
Views: 9495

Generic Relay (active low)

The most common relays sold on ebay/amazon are active low ( when input is driven low they engage). The reason for this are beyond me but i'm having trouble configuring espeasy for this. Everything works but "inverted" when i turn my mqtt on from home assistant the relay switches OFF and wh...