舵機的接線原理:
舵機的接口連接:
紅線----->VIN
棕線----->GND
- Servo(1) -> P7 (PD12)
- Servo(2) -> P8 (PD13)
OpenMV3 M7 / OpenMV4 H7上增加:
- Servo(3) -> P9 (PD14)
注意:OpenMV4 H7 Plus P9不能使用PWM
代碼如下:
from pyb import Servo import time #180°的舵機 s1 = Servo(1) # servo on position 1 (P7) s1.angle(0) # move to 0 degrees time.sleep(1000) while(1): s1.angle(90) # move to 90 degrees time.sleep(600) s1.angle(45) # move to 180 degrees time.sleep(0) s1.angle(-90) # move to 90 degrees time.sleep(600) s1.angle(-45) # move to -90 degrees time.sleep(600) s1.angle(0) # move to 0 degrees time.sleep(1000) #s1.angle(-60, 1500) # move to -60 degrees in 1500ms #s1.speed(50) # for continuous rotation servos
運行效果:
注意:1.openmv可以同時控制三路舵機
2.使用舵機拓展版的時候應選用5~7.2V的電源驅動
3.不使用電源驅動,紅線接openmv的VIN,即使代碼正確也不會轉動(電壓不夠)
正是步行者,一步步登峰!