[solved]DC motor Arduino-Processing interface (simple code not working,help)
in
Integration and Hardware
•
2 months ago
Hi,
im giving my first steps in serial comunication between processing and arduino,i want to control the speed of dc motor in arduino with a processing sketch.
i already tried every i can think of but something is still missing and i ask your help
must be something pretty simple..maybe im not using the right aproach but i think like this its possible to work.
both codes are here below with some coments,hope someone can detect where the problem is..thank you very much!!
arduino code: (where i think problem is)
notes:
-when in processing value is 0 it doesnt move and with multimeter reading is 0 (so serial comunication is working)
-than with any value i send in processing i only can measure 0.50v in pin 9 and ear noise from motor if i force spin it starts and goes up to 1.8 v but no more.
so aparently serial comunication is working but basically i cant understand why im not being able to get analogWrite from 0 to 5v..
notes:
-code is a mess!! im just trying every step to have a fully rc car interface with processing,next step is puting everything working in the same code.
-just pay atention to motor part please :)
http://imgur.com/CH64hmm
im giving my first steps in serial comunication between processing and arduino,i want to control the speed of dc motor in arduino with a processing sketch.
i already tried every i can think of but something is still missing and i ask your help
must be something pretty simple..maybe im not using the right aproach but i think like this its possible to work.
both codes are here below with some coments,hope someone can detect where the problem is..thank you very much!!
arduino code: (where i think problem is)
notes:
-when in processing value is 0 it doesnt move and with multimeter reading is 0 (so serial comunication is working)
-than with any value i send in processing i only can measure 0.50v in pin 9 and ear noise from motor if i force spin it starts and goes up to 1.8 v but no more.
so aparently serial comunication is working but basically i cant understand why im not being able to get analogWrite from 0 to 5v..
- int leitura;
int vel;
const int motor=9;
void setup()
{
Serial.begin(9600);
pinMode(motor,OUTPUT);
}
void loop()
{
if(Serial.available())
{
leitura=Serial.read();
vel=map(leitura,0,255,0,1023);
if(leitura>0)
{
analogWrite(motor,vel);
delay(1);
}
else
{
analogWrite(motor,LOW);
}
}
}
notes:
-code is a mess!! im just trying every step to have a fully rc car interface with processing,next step is puting everything working in the same code.
-just pay atention to motor part please :)
- import processing.serial.*;
Serial myPort;
int a=0;
int b=1;
int l1=240;
int l2=250;
int x=105;
int x1;
int y=355;
int y1;
int vel;
void setup()
{
size(400, 400);
println(Serial.list());
myPort = new Serial(this, Serial.list()[0], 9600);
}
void draw()
{
//led test------------------------
/*
a=a-b;
a=constrain(a,0,1);
if (a==1)
{
rectMode(CORNER);
background(255);
fill(50);
rect(50, 50, 100, 100);
myPort.write(l1);
println(l1);
}
else if (a==0)
{
background(255);
fill(125);
rect(50, 50, 100, 100);
myPort.write(l2);
println(l2);
}
//servo---------------------
rectMode(CORNER);
stroke(0);
fill(0);
rect(100,190,190,20);
stroke(0);
fill(255);
rect(x,190,10,20);
if(mouseX>97 && mouseX<292 && mouseY > 189 && mouseY< 211 && mousePressed)
{
x=mouseX;
x=constrain(x,100,280);
x1=x-100;
println(x1);
myPort.write(x1);
}
*/
//motor--------------------------
rectMode(CORNER);
stroke(0);
fill(0);
rect(300, 100, 20, 265);
stroke(0);
fill(255);
rect(300, y, 20, 10);
if (mouseX>299 && mouseX<321 && mouseY > 97 && mouseY< 368 && mousePressed)
{
y=mouseY;
y=constrain(y, 100, 355);
y1=abs(y-355);
}
println(y1);
myPort.write(y1);
}
/*
void mousePressed()
{
if (mouseX>49 && mouseX<151 && mouseY>49 && mouseY<151)
{
b=b*-1;
}
}
*/
http://imgur.com/CH64hmm
below you can see schematic of dc motor,
im using mosfet just to back voltage dont damage anything else (like in arduino starter kit project09 motorized pinwheel). schematic is exactly like in picture below with exception that mosfet gate is conected to 5v (it means other two pins are always conected) and red wire of dc motor is conected to pin9 (PWM).
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