<p>Yes this is doable.</p>

<p>The typical use is with a robot, a lamp/light placed some distance away, with the goal being: navigate towards the light.</p>

<p>Assuming a robot that can spin (turn in place without moving forward or backward);
mount a light sensor in a tunnel that shield the sensor from most of the light except light coming from straight forward.</p>

<p>Spin the robot until the light sensor sees the light (anything above 80% is reasonable).  </p>

<p>Drive forward while the bright light is visible, when it isn't stop, spin until it is visible. </p>

<p>The color sensor has an ambient light setting, use that.</p>

<p>There are a number of line-following algorithms that can be modified to handle moving toward a point of light.</p>

CC BY-SA 3.0
2017-03-19T16:35:18.293Z
2017-03-19T16:35:18.293Z
dfrevert
<p>I would like to know if there is any workable way to use a single color sensor to track a light source in one axis of rotation?</p>

<p>Would rotating the sensor back and forth within a few degrees, every few seconds, to check differing light levels work?</p>

<ev3>
Any way to track a light source in 1 dimension using one color sensor?
callisto
# Any way to track a light source in 1 dimension using one color sensor?

(Asked by: username_0 on 2017-03-17)

I would like to know if there is any workable way to use a single color sensor to track a light source in one axis of rotation?

Would rotating the sensor back and forth within a few degrees, every few seconds, to check differing light levels work?

**Tags:** ev3


---

## 1 answers

### Answer by username_1 on 2017-03-19. Score: 4

Yes this is doable.

The typical use is with a robot, a lamp/light placed some distance away, with the goal being: navigate towards the light.

Assuming a robot that can spin (turn in place without moving forward or backward);
mount a light sensor in a tunnel that shield the sensor from most of the light except light coming from straight forward.

Spin the robot until the light sensor sees the light (anything above 80% is reasonable).

Drive forward while the bright light is visible, when it isn't stop, spin until it is visible.

The color sensor has an ambient light setting, use that.

There are a number of line-following algorithms that can be modified to handle moving toward a point of light.


---

