Setting Pin and Device Values

In this section, we discuss writing data to:

Digital pins.
PWM pins.
Servo motors.

Note: I2C devices are discussed in the next section of this guide.

digital_write

 def digital_write(self, pin, value)

    Set the specified pin to the specified value.

    :param pin: arduino pin number

    :param value: pin value (1 or 0)

Example:

digital_output.py

pwm_write

 def pwm_write(self, pin, value)

    Set the selected pwm pin to the specified value.

    :param pin: PWM pin number

    :param value: Pin value (0 - 0x4000)

Example:

fade.py

Notes:

The value parameter is typically set between 0 and 255.

servo_write

 def servo_write(self, pin, position)

    This is an alias for analog_write to set the position of a servo that has 
    been previously configured using set_pin_mode_servo.

    :param pin: arduino pin number

    :param position: servo position

Example:

servo.py

Notes:

For an angular servo, the position parameter is set between 0 and 180 (degrees). For a continuous servo, 0 is full-speed in one direction, 180 is full speed in the other, and a value near 90 is no movement.