Python code for servo control using Raspberry Pi
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This Python code controls a servo motor connected to a Raspberry Pi by pulsing its control pin at 50Hz. It imports GPIO and time libraries, sets the pin mode and defines the servo pin as PWM output. It then sweeps the servo from 0 to 180 degrees in 10 steps over 10 seconds, pauses, returns to 90 degrees, pauses again and returns to 0 degrees before stopping PWM and cleaning up GPIO.
Python code for servo control using Raspberry Pi
- 1. #####Python code for servo control using Raspberry Pi##### # Import libraries import RPi.GPIO as GPIO import time # Set GPIO numbering mode GPIO.setmode(GPIO.BOARD) # Set pin 11 as an output, and set servo1 as pin 11 as PWM GPIO.setup(11,GPIO.OUT) servo1 = GPIO.PWM(11,50) # Note 11 is pin, 50 = 50Hz pulse #start PWM running, but with value of 0 (pulse off) servo1.start(0) print ("Waiting for 2 seconds") time.sleep(2) #Let's move the servo! print ("Rotating 180 degrees in 10 steps") # Define variable duty duty = 2 # Loop for duty values from 2 to 12 (0 to 180 degrees) while duty <= 12: servo1.ChangeDutyCycle(duty) time.sleep(1) duty = duty + 1 # Wait a couple of seconds time.sleep(2) # Turn back to 90 degrees print ("Turning back to 90 degrees for 2 seconds") servo1.ChangeDutyCycle(7) time.sleep(2) #turn back to 0 degrees print ("Turning back to 0 degrees") servo1.ChangeDutyCycle(2) time.sleep(0.5) servo1.ChangeDutyCycle(0) #Clean things up at the end servo1.stop() GPIO.cleanup() print ("Goodbye")