DC Motor

[santana1992]

i want to control dc motor and i am using MegaPi Encoder/DC Driver V1 for that and i tried;

from megapi import *

if name == ‘main’:
bot = MegaPi()
bot.start()
bot.motorRun(1,0);
sleep(1);
while 1:
sleep(1);
bot.motorRun(1,50);
sleep(1);
bot.motorRun(1,0);
sleep(1);
bot.motorRun(1,-50);
sleep(1);
bot.motorRun(1,0);

this example code from github and this code;

from megapi import *

if name == ‘main’:
bot = MegaPi()
bot.start()
bot.encoderMotorRun(1,0);
sleep(1);
while 1:
bot.encoderMotorRun(1,-200);
sleep(5);
bot.encoderMotorRun(1,0);
sleep(5);

but i cannot run the dc motor although i have attached external power cable and i tried the connection with digital write example to see the blinking leds. if i summary, the connection is seems to be right with digitalWrite code but if it comes to runing motor, it didnt work at all with my python code. Can you please help me to solve the problem.
Best regards