Hello.
Pretty new to arduino. Tried search, not so brilliant in English.
Problem: I need to control motor, one direction only and regenerative? brake. Potentiometer to control speed and when to brake. Brake needs to be certain time on, and then it have to "let go".
Now speed control part of program works (very first easy test), but brake will not "let go". For test purposes I have only LED:s to see the output. Later when this works there will be FET:s and drivers for them.
I tried to use delay, but it didn't help.
So, the loop must be rolling all the time checking is there throttle or brake, and when braking, brakes should be "on" only once, certain time. And when throttle goes "on", brake must be off even thought there is brake time still going.
Later the brake will be also driven with pwm, here in test condition its enough to know it works or not...
Here is the code, which is not completely mine (some copy-paste and so on).
-eemeli-
ps sorry about my bad english.
int ledPin = 9; // LED connected to digital pin 9
int analogPin = 0; // potentiometer connected to analog pin 3
int val = 0; // variable to store the read value
int brakePin = 8; // brake led
int state = 0; // throttle or brake
void setup()
{
pinMode(ledPin, OUTPUT); // sets the pin as output
pinMode(brakePin, OUTPUT); // sets the pin as output
}
void loop()
{
val = analogRead(analogPin); // read the input pin
if (val > 30)
{
state = 1;
}
else
{
state = 0;
}
switch (state) {
case 0:
digitalWrite(ledPin, LOW);
digitalWrite(brakePin, HIGH);
break;
case 1:
digitalWrite(brakePin, LOW);
analogWrite(ledPin, val / 4); // analogRead values go from 0 to 1023, analogWrite values from 0 to 255
break;
}
}
