I have a bunch of sensors, and when they activate, they have 2 I/O pins that give off 7V. I am using the 7Vs to power an LED. I would like to also have a buzzer as well as an LED in case the lighting is not ideal to see the LEDs when the sensor gets tripped. My problem is that, I do not want ALL of the indicator LEDs to light up when I attach the buzzer, the LEDs all need to be independent.
How can I have the individual LEDs for each sensor light up independently when the sensor is tripped, and also get the buzzer to sound, without buying 8 different buzzers? I’m sure there is a simple solution but it’s late at night and my brain is mush right now. I’m wondering if I need a relay of some kind. The simplest/cheapest option will of course be ideal. :smack:
edit: I know this would be simple with a microcontroller, but I’d rather keep this discrete for now.