I agree with superchiku
, LDRs might be an easy way to do it, and Soeren
is right TSOP is just a packing name, here you have a description of it:http://www.siliconfareast.com/packages1.htm
But I think i understand your doubt... I was new in robotics not long time ago... hehehe
There are many different ways to approach the solution to a line tracker:
· One is what superchiku
suggested, by using just a LDR-LED couple, so you generate light with the LED and measure the generated Light with the LDR using a voltage divider circuit (please, feel free to ask about any term I use here)
· Other solution, which might be close to the "TSOP concept" is to use a simple component such as the CNY70 (http://www.datasheetcatalog.org/datasheet/vishay/83751.pdf
) in which both, the detector and the emmiter are built in the same package... It might seem more complex, but the idea is exactly the same, thats why these components are called "Reflective Optical Sensors"
Here you have an example of the component that i am talking about:http://www.x-robotics.com/sensores_ing.htm#Luz
Let me know if you need any more help.