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Objective:
To become familiar with controlling drive motors using the L298N Motor Controller
To learn to write functions to make code more comprehensible
To learn to use the Duplicate, Format, Collapse, and Comment tools to make code both faster and more comprehensible
The L298N Motor controller is a 'H' bridge(see following schematic diagram). It enables us to control the speed and direction of the motors using logic control signals from the MicroBit.
The L298N Motor controller is a 'H' bridge(see following schematic diagram). It enables us to control the speed and direction of the motors using logic control signals from the MicroBit.
Below: This code should make both motors turn forwards. If a motor turns backwards, reverse the motor wiring to the motor controller.
Functions:
Functions:
Encapsulating blocks of code that are reused into functions makes code much more comprehensible.
Encapsulating blocks of code that are reused into functions makes code much more comprehensible.
Here we define a function called forwards that we can call whenever we need to go forwards.
Here we define a function called forwards that we can call whenever we need to go forwards.
Challenge:
Challenge:
Write additional functions:
Write additional functions:
Forwards, Backwards, Left, Right, Stop
Forwards, Backwards, Left, Right, Stop
Program the robot to go in a Square
Program the robot to go in a Square
MakeCode IDE Editor Functions: Right-clicking on Makecode makes available various editing tools:
Duplicate- useful for duplicating similar functions
Collapse Blocks- shrinks size of long functions
Format Code- lines up blocks
Comment- add explanations to code
Snapshot- Screenshot of code
"Collapse Blocks" can be used to make large programs more compact
"Collapse Blocks" can be used to make large programs more compact
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