A colour recognition sensor works by emitting light through a transmitter, and then detecting the reflected light by using a receiver. It is used to detect the received light intensity for red, blue and green respectively, making it possible to determine the colour of the target object, since most of the colours can be devised through a combination of red, blue and green. The sensor is designed in such a way that 4 bright LEDs light the object and then the light reflecting from that is used by the sensor to detect the colour.
It has 4 LEDs, photodiodes and 8 pins as described in the image below:-
How to use
Tutorial – (https://youtu.be/CPUXxuyd9xw)
YouTube Video
Common Applications
1. In scanners to distinguish coded markings
2. In manufacturing industries.
Some example projects that students can try out in the ATL Lab
1. Make a colour detection project ( )
Tutorial Linkhttps://www.youtube.com/watch?v=HsjrcjRNFw
2. Colour Sorting Machine –
https://www.youtube.com/watch?v=Qeyvpp_-dkk
Safety Measures to follow
1. Avoid the interference of external light during colour recognition, otherwise it will affect the result of colour.
Important Links
1. Introduction to colour sensor – ( )
YouTube Video https://youtu.be/6hG9wtrmNgw
