Servo Motor Issues

[shanefowler25]

Hello,

I'm new to pycom and using the GPy board. I have my board attached to an expansion board v3.1 and I am trying to control a servo motor by starting it at on location and then setting it at another location.

I'm using the example code given @ the PWM documentation page and configured it to my the way my pins are setup, yet when I run my program on my device the servo motor just spins uncontrollably.

Can someone help explain to me why this is happening, my code is as follows:

from machine import PWM

pwm = PWM(0, frequency=5000)  # use PWM timer 0, with a frequency of 5KHz

pwm_c = pwm.channel(0, pin='P22', duty_cycle=0.5)
pwm_c.duty_cycle(0.3) 

[shanefowler25]

I solved my own problem, I realized the frequency was too high and that the duty cycle should be between 5 and 10 percent.

I used Sparkfun's PWM page to help me get this information and solve my issue. The link is here:
https://learn.sparkfun.com/tutorials/pulse-width-modulation/all

Also my code is here for anyone who may run into the same issue with a servo motor:

from machine import PWM
from time import sleep

pwm = PWM(0,frequency=50)  # use PWM timer 0, with a frequency of 50Hz
pwm_c = pwm.channel(0,pin='P8', duty_cycle=1)

while True:
    pwm_c.duty_cycle(0.097)
    sleep(1)
    pwm_c.duty_cycle(0.043) 
    sleep(1)
    pwm_c.duty_cycle(0.097)