How would I set up a trigger on one relay with multiple pushbutton inputs? Answered
I'm looking to set up a 12 volt system that has approximately 12 buttons that will each trigger an individual relay and a shared relay. So I will have 13 relays (numbered 1-13) and 12 buttons (1 -12) - Button 1 will trigger relay #1 and #13, Button 2 will trigger relay #2 and #13, etc.
Wiring up a single relay circuit is easy enough, and I think I can set it up with an arduino or similar IC, but I'm looking for a discrete circuit design. Would a simple diode on each circuit leg be enough? If not, what would I need?