Difference between revisions of "SG90-Servo"
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| Line 1: | Line 1: | ||
| + | see also https://tutorials-raspberrypi.de/raspberry-pi-servo-motor-steuerung/ | ||
[[File:20190612_084823.jpg|900px]] | [[File:20190612_084823.jpg|900px]] | ||
| + | <HTML5video width="960" height="600" controls autoplay="false" loop="false">20190612_084825</HTML5video> | ||
= Python Source Code = | = Python Source Code = | ||
<source lang='python'> | <source lang='python'> | ||
| Line 39: | Line 41: | ||
GPIO.cleanup() | GPIO.cleanup() | ||
| + | </source> | ||
| + | == Angle control == | ||
| + | <source lang='python'> | ||
| + | # set servo position by angle (degree) | ||
| + | # calculate duty cycle from angle | ||
| + | def setservo(angle): | ||
| + | if angle < 0: | ||
| + | angle = 0 | ||
| + | if angle > 180: | ||
| + | angle = 180 | ||
| + | pwm = angle/18 + 2.5 | ||
| + | servo.ChangeDutyCycle(pwm) | ||
</source> | </source> | ||
[[Category:Raspberry]] | [[Category:Raspberry]] | ||
Latest revision as of 20:05, 12 June 2019
see also https://tutorials-raspberrypi.de/raspberry-pi-servo-motor-steuerung/
Python Source Code
# Servo control
# see https://tutorials-raspberrypi.de/raspberry-pi-servo-motor-steuerung/
import RPi.GPIO as GPIO
import time
# set the GPIO pin to be used
servoPIN = 23
# set the mode
GPIO.setmode(GPIO.BCM)
GPIO.setup(servoPIN, GPIO.OUT)
p = GPIO.PWM(servoPIN, 50) # set pulse width modulation (PWM to 50Hz)
# start the pulswidth with a 2.5 cycle
p.start(2.5) # Initialisierung
try:
while True:
p.ChangeDutyCycle(5)
time.sleep(0.5)
p.ChangeDutyCycle(7.5)
time.sleep(0.5)
p.ChangeDutyCycle(10)
time.sleep(0.5)
p.ChangeDutyCycle(12.5)
time.sleep(0.5)
p.ChangeDutyCycle(10)
time.sleep(0.5)
p.ChangeDutyCycle(7.5)
time.sleep(0.5)
p.ChangeDutyCycle(5)
time.sleep(0.5)
p.ChangeDutyCycle(2.5)
time.sleep(0.5)
except KeyboardInterrupt:
p.stop()
GPIO.cleanup()
Angle control
# set servo position by angle (degree)
# calculate duty cycle from angle
def setservo(angle):
if angle < 0:
angle = 0
if angle > 180:
angle = 180
pwm = angle/18 + 2.5
servo.ChangeDutyCycle(pwm)