nicknh
Newbie level 2
Hi All,
I have a circuit (see PNG above) that's going to be a wall mounted remote switch. I only have 2 low voltage wires running into this switch and I need to do two things.
1) I need to be able to turn the LED on/off (to indicate a state - on/off)...normally, this would be simple - I'd just apply +5V and the LED would light (or not apply and it would be off).
2) I need to detect if the push button switch also tied in parallel to the resistor/LED branch gets pushed closed...
Do any of you know of a basic circuit that could allow me to do both - drive the LED (either on or off) AND detect the push button's closed state - all using just the 2 wires?
Thanks,
Nick
I have a circuit (see PNG above) that's going to be a wall mounted remote switch. I only have 2 low voltage wires running into this switch and I need to do two things.
1) I need to be able to turn the LED on/off (to indicate a state - on/off)...normally, this would be simple - I'd just apply +5V and the LED would light (or not apply and it would be off).
2) I need to detect if the push button switch also tied in parallel to the resistor/LED branch gets pushed closed...
Do any of you know of a basic circuit that could allow me to do both - drive the LED (either on or off) AND detect the push button's closed state - all using just the 2 wires?
Thanks,
Nick