Picture of Boe Bot/Arduino line following robot
This is a fairly straightforward guide of how to build a line following robot. it uses lights, light dependent resistors (LDRs), an arduino, and a boe bot chassis (any robot chassis with 2 continuous rotation servos will work). it reads the sensors and turns based on the amount of light reflected form the surface below it. the sensors could also be used to detect edges.
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Step 1: Build the sensor

Picture of Build the sensor
you will have to build the sensor to the included schematic

Step 2: Mount the arduino, and connect the wires

Picture of Mount the arduino, and connect the wires
i used an arduino mega, but you could use an uno. mounting will vary based on arduino and chassis. you could also use an arduino board of education from parallax.
vhvyas361 year ago
can you post a video of this working????
dcárdenas52 years ago
Hi, what kind of LEDs are those? and how is the sensor connected to Arduino?
red_green (author)  dcárdenas52 years ago
RadioShack wide viewing angle LEDs. Model: 276-024 | Catalog #: 276-024
I think
Ohcpin2 years ago
May i have a schematic diagram? i feel blur about the "light"
Robot Lover3 years ago
Looks like a fun project! Line following robots are always cool. Anyway, great project!