Forum >DFRObot Romeo V2 : how to control the output voltage for motor drivers?
DFRObot Romeo V2 : how to control the output voltage for motor drivers?
Vincent14 2013-11-28 01:58:25 3065 Views3 Replies Hello,
I've searched all over the forum, and I've not been able to find any answer to a basic question: what is the output voltage for motor drivers depending of the input voltage?
I mean, I am building a robot with 6V motors and I don't know which voltage my different batteries will have (surely into the allowed range). But my code won't change, so, if I switch of battery to another with different power, what will happen on the output?
Vincent
edit: I've seen the example of code, I'm afraid to understand that the speed of a motor is defined as:
[code]analogWrite (E1,{value});[/code]
Where the {value} would be the input voltage, in percent between 0 and 255? Is there a way to know what is the input voltage?
I've searched all over the forum, and I've not been able to find any answer to a basic question: what is the output voltage for motor drivers depending of the input voltage?
I mean, I am building a robot with 6V motors and I don't know which voltage my different batteries will have (surely into the allowed range). But my code won't change, so, if I switch of battery to another with different power, what will happen on the output?
Vincent
edit: I've seen the example of code, I'm afraid to understand that the speed of a motor is defined as:
[code]analogWrite (E1,{value});[/code]
Where the {value} would be the input voltage, in percent between 0 and 255? Is there a way to know what is the input voltage?
2013-12-02 18:27:50 Hi Vincent,
Oh sorry, I read it wrong.
Romeo V2 has two motor driver "M1" and "M2".
If the battery has higher input volt, the output voltage will be higher.
Grey.CC
Oh sorry, I read it wrong.
Romeo V2 has two motor driver "M1" and "M2".
If the battery has higher input volt, the output voltage will be higher.
Grey.CC 2013-11-28 19:44:07 Hello Vincent,
Romeo V2 use PWM mode to control the output voltage, it divide the voltage into 256 parts.
{value} means output voltage. Output value will be in percent between 0 to 255. "0" means min; "255" means max.
And with different input voltage, the output range will be different.
Which expansion shield do you use?
Grey.CC
Romeo V2 use PWM mode to control the output voltage, it divide the voltage into 256 parts.
{value} means output voltage. Output value will be in percent between 0 to 255. "0" means min; "255" means max.
And with different input voltage, the output range will be different.
Which expansion shield do you use?
Grey.CC 