Hi Guys
Just curious as to peoples thinking here, looking for better ideas.
I'm looking to connect a bunch (5+) PIRs to an arduino, the PIRs have N/C relay contact that go open in alarm state. I can use a 4n25 opto and a 330 ohm resistor and use the N/C relay on the PIR to turn the LED on and off( Relay jumpers the opto LED) ....
Anyone have a more elegant way to do this ?
Tnx Pete
Just curious as to peoples thinking here, looking for better ideas.
I'm looking to connect a bunch (5+) PIRs to an arduino, the PIRs have N/C relay contact that go open in alarm state. I can use a 4n25 opto and a 330 ohm resistor and use the N/C relay on the PIR to turn the LED on and off( Relay jumpers the opto LED) ....
Anyone have a more elegant way to do this ?
Tnx Pete
Comment