1. LIGHT SENSING ROBOT
Aim: To built a robot that can change its moments by focusing different colors on the surface
Block diagram:
Red led
Blue led
L
D
R
A
D
C
3
2
0
1
Micro
controller
D
R
I
V
E
R
M
O
T
O
R
Yellow led
Description:
In this project TCS230 is the color sensor, which senses color intensity and converts into
frequency with 50% duty cycle Square waveform. This frequency is measured through
microcontroller. This sensor is having internally 3 filters and is programmable, to select desired
filter. By this we can get selected compositions of the irradiant light. By using this sensor we can
find color of the object.
Procedure:
The LDR color sensor can directly interface with the microcontroller. If this color sensor
is irradiant with any color, it produces 3 different frequency outputs to the microcontroller by
selecting the respective RGB filters present in it. Then microcontroller calculates HUE % value
with these three composition values. According to this calculated HUE value microcontroller
displays that color name.
