barathwaj555
Newbie level 5
I am using p89v51rd2 microcontroller with 4 ir sensors for line tracing and 2 color sensors for red and blue color detection. I have used 1k load resistance for all the six sensors. But all the 4 ir sensors shows correct output when connected to controller but the two color sensors alone doesnt show correct output. When it is not connected to controller it shows 4.8V but once it is connected to microcontroller it shows 1.2V or less. Should i use higher load resistance for the color sensors alone?