single_motor.py

import time
import math
from inventorhatmini import InventorHATMini, MOTOR_A

"""
Demonstrates how to control a motor on Inventor HAT Mini.
"""

# Create a new InventorHATMini
board = InventorHATMini(init_leds=False)

# Access the motor from Inventor and enable it
m = board.motors[MOTOR_A]
m.enable()
time.sleep(2)

# Drive at full positive
m.full_positive()
time.sleep(2)

# Stop moving
m.stop()
time.sleep(2)

# Drive at full negative
m.full_negative()
time.sleep(2)

# Coast to a gradual stop
m.coast()
time.sleep(2)


SWEEPS = 2              # How many speed sweeps of the motor to perform
STEPS = 10              # The number of discrete sweep steps
STEPS_INTERVAL = 0.5    # The time in seconds between each step of the sequence
SPEED_EXTENT = 1.0      # How far from zero to drive the motor when sweeping

# Do a sine speed sweep
for j in range(SWEEPS):
    for i in range(360):
        m.speed(math.sin(math.radians(i)) * SPEED_EXTENT)
        time.sleep(0.02)

# Do a stepped speed sweep
for j in range(SWEEPS):
    for i in range(0, STEPS):
        m.to_percent(i, 0, STEPS, 0.0 - SPEED_EXTENT, SPEED_EXTENT)
        time.sleep(STEPS_INTERVAL)
    for i in range(0, STEPS):
        m.to_percent(i, STEPS, 0, 0.0 - SPEED_EXTENT, SPEED_EXTENT)
        time.sleep(STEPS_INTERVAL)

# Disable the motor
m.disable()