Hello,
First of all I am a basic diy person so not much experience with electronics other than basic relays, some soldering and basic use of multi-meter.
I have a brk smoke detectors throughout house and would like to trigger house alarm as it is connected to service that notifies me over the phone. I have looked online for information and stumbled on your video that looked similar to my needs but more so with Edward Cheung. Please advise where best to post this message as I think it may not be appropriate on mysensors.org.
Initially I was thinking of using brk relay but it is rated for 120V AC, I am based in europe with 240V AC, I do not need to power anything with AC and I want it to work when the power is down as both smoke detectors and house alarm operate on batteries.
I purchased the breadboard, 1k and 330 ohm resistors and 2 x PC817 4pin optocouplers without checking if my alarm is supporting normally open zones, it has normally closed options 4k7 resistor end of line and 2k2 resistor end of line and basic normally closed (breaking the circuit triggers alarm).
Alarm zone is a 5 v DC circuit.
Question:
Any advice on how to get output pins to stay constantly closed and change state when alarm is triggered, should I buy some other optocoupler with 6 pins that has ability to change output contacts when energized or any other approach?
Thank you,
Oleg
