jessicabrenner
New Member
Hello,
I would like to control a relay using two possible inputs. The first method of control will be an I/O pin of an arduino (configured as an output pin). The second method of control would be any other 5V signal (for instance from another microcontroller output pin, or another pin on the same arduino).
If I connect both to the relay signal pin directly, then when I send 5V from one pin to the relay, the 5V will also be applied to the other output pin. Will applying 5V from one pin to another output pin destroy either pin or microcontroller?
Thanks!
I would like to control a relay using two possible inputs. The first method of control will be an I/O pin of an arduino (configured as an output pin). The second method of control would be any other 5V signal (for instance from another microcontroller output pin, or another pin on the same arduino).
If I connect both to the relay signal pin directly, then when I send 5V from one pin to the relay, the 5V will also be applied to the other output pin. Will applying 5V from one pin to another output pin destroy either pin or microcontroller?
Thanks!