Quick Start Guide

© Modular Robotics, 2016 www.modrobotics.comPage 6
7. Using the Bar Graph to See the Numbers
You can use the Bar Graph Action block to
understand what’s going on inside your
robot—to show the numbers flowing from
block to block.
Attach the Bar Graph Action block to any
block in a robot. The Bar Graph Action block
shows how big the number is. If the number
is big, all the cells in the bar graph light. If
the number is small, only a few light up. If the
number is very small (or zero) no cells light at
all.
Try it. Build a simple Brightness Gobot with
a Brightness Sense block and a Drive Action
block. Attach the Bar Graph Action block to
one of the blocks. If there’s a lot of light, the
Bar Graph Action block will show a full bar
(and the Drive Action block will move fast). If
there’s not much light, the Bar Graph Action
block won’t light much.
You don’t need the Bar Graph Action block to
understand what’s going on with this simple
robot. But, with bigger and more complicated
robots, the Bar Graph Action block can help.
8. Arrangement of Cubelets Makes a Difference
The pictured robots have different versions
because you can put the Drive Action block
into the robot in different ways. One way, the
robot goes straight. The other way, the robot
goes around and around--you could call it a
Turnabot.
It’s not just which Sensor and Action blocks
you choose. It’s also how you position and
situate the Cubelets. The same Cubelets
arranged in a different physical configuration
make different robots.