Arduino detecting LED on

Other Hardware General Electronics
1

Im trying to create a project but can't seem to figure something out.

I have 2 Lights
Long light (LL), and Red Light(RL)

Im trying to make a switch that when i turn it on, LL turns ON and RL turns OFF, and vice versa. I made a sketch of the circut :

1527×1083 330 KB

What i'm trying to add is a way for my Arduino to know if RL is on or off. I've been searching for the past few hours, But no luck.

2

We cannot see your sketch of the circuit. See the forum guide for details of how to post images.

3

Sorry!, Fixed it.

4

digitalRead?
Do you know you need a current limiting resistor is the red LED is a common LED?

5

A connection from the anode of the Red LED with digital read to an Arduino pin. As stated place a current limiting resistor between this and the led or from cathode to ground.

6

Smajdalf:
digitalRead?
Do you know you need a current limiting resistor is the red LED is a common LED?

wolframore:
A connection from the anode of the Red LED with digital read to an Arduino pin. As stated place a current limiting resistor between this and the led or from cathode to ground.

It worked after connecting a resistor from the cathode to the ground, Thanks for the help!