how can i add smoke sensor and gas sensor is it possible ???
my hardware is adruino mega
Hi @pilkar71,
Welcome to the Cayenne community! Yes itâs possible, do you have a specific sensor in mind?
-B
Just like mq5 and mq4 sensor
LOW VOLTAGE Smokies and O2 sensors
generally have normally open and normally closed contacts-
You can wire these âdryâ contacts
directly into a GPIO of a Pi, Arduino or ESp
provided that you use a 10K ohm pullup resistor.
When the alarm contacts close, they pull the GPIO voltage down to ground.
Note: NO home made fire detection stuff is UL approved ;).
So- donât rely on Cayenne to satisfy building codes and fire inspections,
BUT as long as an approved relay is correctly installed,
I donât think the Fire Marshal would object.
If my house was burning down and I was away,
Iâd like to knowâŚ
On a 120 VAC 3-wire
INTER-TIED smokie system
(required in all new US households),
you need a Relay Module:
-The legal liability is extraordinary,
so youâd better know what youâre doing.
âŚor, you can get creativeâŚ