Eddie Robot movement problem

hcchen

Hello anyone,

I am a novice in programming.

I hope that Eddie Robot can move accurately ,but I am unable to complete the work.

(Propeller Tool v1.3.2 is used for Eddie Robot)

I used the drive( Eddie Motor Driver.spin).

I used both functions ,and gave the same parameter.(value:=$FF)

my simple code :

My simple code can't make Eddie Robot straight forward.

I don't know why the reason is.

Anyone's suggestion is good for me.

Ttailspin

Move the motors.start command above the repeat command, and see if that works.

hcchen

@Ttailspin

thank your suggestion

I try to do it
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the result:
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I don't have any experience about control DC motor.
I find a lot of relevant information about this motor ,but the information can't help me effectively ,so l need the experience of the developers of Eddie Robot control to help me.

Ttailspin

I can not view your attachments, they are showing as 'invalid', maybe try to attach them again..

hcchen

my code :

the result:

the Eddie Robot go to the right side.

hcchen

l read this document. It make me to engender new idea.

using the PWM to control these motors.
I want to use PWM to control the input voltage of these motors ,but I don't know how to produce duty cycle.
can anyone tell me how long the period is ?