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EV3 PROGRAMMING
HELPFUL HINTS
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Moving Around
Negative Power or Negative Rotation makes robot go backwards.
But if both are negative, the robot will go forward!
Move Steering Block
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Moving Around
The lowest motor speed set the turning direction. In this picture, motor “C” (right motor) is zero and lower than 50; therefore, the robot will turn right
Move Tank Block
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Body VS. Wheel Rotation
Wheel's rotation sensor cannot be used to detect body rotation; one wheel rotation is 17 CMS. "1 rotation" in the Move Steering Block's means one rotation of the robot's wheels
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Turning
Turn in Place: Both wheels rotate in
opposite directions
Swing Turn or Wide Turn:One wheel stays the other rotates
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Watch Your Speed!
At a lower speed you can better control robot’s movements, especially when going backwards and turning, and line tracking too!
Place a wait block before/after turns for more accurate and sharper turns
Use Reset Motor Blocks from the Sensor Palette to recalibrate motors rotation sensors and make sure your robot does not lean to the sides. This will happen after the robot travels distances longer than four rotations
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Did you know?
Time is considere
d a sensor
Using sensors
over rotations makes robots more
autonomous
Ultrasonic Sensor
readings less than 10 cms
will not be accurate
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About Sensors
The Touch Port 1
Goat Gyro Port 2
Chases Color Port 3
Us Ultrasonic Port 4
Wiresensors to the correct port!
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Color Sensors
If too close to surface will not sense reading
accurately. Should be a penny away
Using thresholds for reflective light
is useful. Take high and low readings add
values and divide by two to get
your threshold value
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Color Sensors
Sometimes color sensor
does not sense
accurately the color reading.
Go to view mode and try using the value of what the
sensor is sensing in addition to the color
desired. Put both color values when
selecting the colors in the color block to make sure it reads
it.
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Go to File Navigation
Select desired project once to open it
Select the Project File by clicking twice a box will appear with delete icon option
Click check mark to delete entire project
Deleting from Brick
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Have fun with the EV3!