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Combine various blocks to make a logical maze solving algorithm

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Here is one way to program a robot to follow a black line.

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using the colour sensor, you can detect a range of colours and how much light is reflected from an object

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The folowing gists may be useful, but feel free to just make things up yourself.

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Start by building your robot. 
The simplest robot is the Spike hub connected to two wheels and a caster
There are lots of ways to build a similar 2-wheeled bit, and the design shown here might not be the best for every task.
You may also need to adapt your code if you build a bot with larger motors or wheels.

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# Import the libraries
from sense_hat import SenseHat
from time import sleep

# Set up the Sense HAT
sense = SenseHat()
sense.set_rotation(270, False)

# Set up the colour sensor
sense.color.gain = 60 # Set the sensitivity of the sensor

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# m8tricks output file 
from sense_hat import SenseHat
from time import sleep
sh = SenseHat()
sh.rotation = 270
sh.clear(0,0,0)
g = (0,255,0)
y = (255,255,0)
b = (0,0,0)
p = (255,0,255)