April 2018
Beginner
552 pages
13h 58m
English
book
Raspberry Pi 3 Cookbook for Python Programmers - Third Edition
by Steven Lawrence Fernandes, Tim Cox
Content preview from Raspberry Pi 3 Cookbook for Python Programmers - Third Edition
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How it works...
Once you have built the robot and wired up the wheels to the motor controller, you can work out how to control it.
Start by importing time (which will allow you to put pauses in the motor control) and wiringpi2 (to allow control of the GPIO pins). Use wiringpi2 here, since it makes it much easier to make use of I/O expanders and other I2C devices, if you want to later on.
Define values to use for setting the pins ON/OFF, for the direction IN/OUT, as well as the duration of each motor STEP. Also, define which PINS are wired to the motor controls, and our movements, FWD, RIGHT, and LEFT. The movement is defined in such a way that by switching both motors ON, you will move forward, and by switching just one motor ON, you will ...
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