Society of Robots - Robot Forum

Electronics => Electronics => Topic started by: Trumpkin on February 22, 2009, 07:47:34 PM

Title: Sensor Measuring Distance Instead of Color
Post by: Trumpkin on February 22, 2009, 07:47:34 PM

For my line following robot it appears that my QRD1114 sensors are measuring distance instead of color! Here's my schematic:
(http://img147.imageshack.us/img147/2979/irsensorsxc7.png)

Title: Re: Sensor Measuring Distance Instead of Color
Post by: Soeren on February 22, 2009, 10:28:20 PM

Hi,

QRD1114 is a reflective sensor (less distance, more signal), not a colour sensor.

Title: Re: Sensor Measuring Distance Instead of Color
Post by: paulstreats on February 23, 2009, 06:51:01 AM

you will notice a difference in reading depending upon the color of the target object, but its difficult to differentiate wether the change is due to color or distance as both of these are a factor of ir sensors