![](https://img.laitimes.com/img/__Qf2AjLwojIjJCLyojI0JCLicmbw5CNiVGMkV2M5IjMkVDM3kTMlRGZjNTZlF2YwMDNmZ2Y48CX0JXZ252bj91Ztl2Lc52YucWbp5GZzNmLn9Gbi1yZtl2Lc9CX6MHc0RHaiojIsJye.png)
SG90 一共三根线,红线接5v电源,棕线GND,黄线为数据控制线,接到GPIO上
舵机参数:SG90 脉冲周期为20ms,脉宽0.5ms-2.5ms对应的角度-90到+90,对应的占空比为2.5%-12。
python脚本import RPi.GPIO as GPIO
import time
import signal
import atexit
atexit.register(GPIO.cleanup)
servopin = 7
GPIO.setmode(GPIO.BOARD)
GPIO.setup(servopin, GPIO.OUT, initial=False)
p = GPIO.PWM(servopin, 50) # 50HZ
p.start(0)
time.sleep(2)
i = input("num:")
i = int(i)
while (True):
p.ChangeDutyCycle(0) # 初始化
time.sleep(0.4)
b = input("输入角度:")
b = int(b)
c = b/18+2.5 # 计算占空比
p.ChangeDutyCycle(c) # 设置转动角度
time.sleep(0.4)
p.stop()
GPIO.cleanup()