adafruit-circuitpython-crickit 2.0.2

CircuitPython library for controlling a Crickit robotics board.

Introduction

This convenience library makes coding for the Crickit robotics boards simpler and shorter.

Dependencies

This driver depends on:

• Adafruit seesaw library

• Adafruit Motor library

Please ensure all dependencies are available on the CircuitPython filesystem. This is easily achieved by downloading the Adafruit library and driver bundle.

Usage Example

This examples shows how to control all the devices supported by the library. In most cases you just need a couple of imports.

# This is a mock example showing typical usage of the library for each kind of device.

from adafruit_crickit import crickit

# Add this import if using stepper motors.
# It will expose constants saying how to step: stepper.FORWARD, stepper.BACKWARD, etc.
from adafruit_motor import stepper

# Set servo 1 to 90 degrees
crickit.servo_1.angle = 90

# Change servo settings.
crickit.servo_1.actuation_range = 135
crickit.servo_1.set_pulse_width_range(min_pulse=850, max_pulse=2100)

# You can assign a device to a variable to get a shorter name.
servo_2 = crickit.servo_2
servo_2.throttle = 0

# Run a continous servo on Servo 2 backwards at half speed.
crickit.continuous_servo_2.throttle = -0.5

# Run the motor on Motor 1 terminals at half speed.
crickit.dc_motor_1.throttle = 0.5

# Set Drive 1 terminal to 3/4 strength.
crickit.drive_1.fraction = 0.75

if crickit.touch_1.value:
    print("Touched terminal Touch 1")

# A single stepper motor uses up all the motor terminals.
crickit.stepper_motor.onestep(direction=stepper.FORWARD)

# You can also use the Drive terminals for a stepper motor
crickit.drive_stepper_motor.onestep(direction=stepper.BACKWARD)

# Note: On CPX Crickit, NeoPixel pin is normally connected to A1, not to seesaw,
# so this part of the demo cannot control the NeoPixel terminal.
# Strip or ring of 8 NeoPixels
crickit.init_neopixel(8)
crickit.neopixel.fill((100, 100, 100))

Contributing

Contributions are welcome! Please read our Code of Conduct before contributing to help this project stay welcoming.

Building locally

Zip release files

To build this library locally you’ll need to install the circuitpython-build-tools package.

python3 -m venv .env
source .env/bin/activate
pip install circuitpython-build-tools

Once installed, make sure you are in the virtual environment:

source .env/bin/activate

Then run the build:

circuitpython-build-bundles --filename_prefix adafruit-circuitpython-crickit --library_location .

Sphinx documentation

Sphinx is used to build the documentation based on rST files and comments in the code. First, install dependencies (feel free to reuse the virtual environment from above):

python3 -m venv .env
source .env/bin/activate
pip install Sphinx sphinx-rtd-theme

Now, once you have the virtual environment activated:

cd docs
sphinx-build -E -W -b html . _build/html

This will output the documentation to docs/_build/html. Open the index.html in your browser to view them. It will also (due to -W) error out on any warning like Travis will. This is a good way to locally verify it will pass.