ok, iv only had my arduino for about 2 months now and iv made around 10, 15 little arduino projects that i find on the net, all i have to do is copy and past the code, and follow the schematics.
BUT
i want to start learning to write my own, and built a thing for my bed, with about 6 blue LED's
iv used the code that makes it fade in and out, and boy dose it look awsome in my bedroom, but i would like to have a little more controll over this with out having to plug it into my computer to change the speed of the fading in and out.
so i tryed to merge the Fading source code ;
with the AnalogInput source code;
and heres what i got
int sensorPin = 0; // select the input pin for the potentiometer
int ledPin = 9; // select the pin for the LED
int sensorValue = 0; // variable to store the value coming from the sensor
void setup() {
// nothing happens in setup
}
void loop() {
// fade in from min to max in increments of 5 points:
for(int fadeValue = 0; fadeValue <= 255; fadeValue +=analogRead(sensorPin); ) {
// sets the value (range from 0 to 255):
analogWrite(ledPin, fadeValue);
// wait for 30 milliseconds to see the dimming effect
delay(30);
}
// fade out from max to min in increments of 5 points:
for(int fadeValue = 255 ; fadeValue >= 0; analogRead(sensorPin);) {
// sets the value (range from 0 to 255):
analogWrite(ledPin, fadeValue);
// wait for 30 milliseconds to see the dimming effect
delay(30);
}
}
can some one please tell me what iv fucked up ?
I know its a very simple arduino project, but yer.
i hope some one can please help
first of all you need to put the analog value from the pot in the delay function and not the loop.
Now the pot will give you a control range from 0-1023, and this value will go to the delay.
So it needs to look like this :
delay(analogRead(sensorPin));
you can use the map function to set a different range of values for the delay, just go to the reference page and read about it.
i re read what you said, and i now get what you ment.
// fade out from max to min in increments of 5 points:
for(int fadeValue = 255 ; fadeValue >= 0; fadeValue -=5) {
// sets the value (range from 0 to 255):
analogWrite(ledPin, fadeValue);
// wait for 30 milliseconds to see the dimming effect
[glow](delay(analogRead(sensorPin)); [/glow]
}
}
but i still get an error; "In function 'void loop()':
error: expected `)' before ';' toke"
int sensorPin = 0; // select the input pin for the potentiometer
int ledPin = 9; // select the pin for the LED
int sensorValue = 0; // variable to store the value coming from the sensor
void setup() {
// nothing happens in setup
}
void loop() {
// This part need to stay as it was in the original code
for(int fadeValue = 0; fadeValue <= 255; fadeValue +=5 ) {
// sets the value (range from 0 to 255):
analogWrite(ledPin, fadeValue);
// sets the delay with the pot value
delay(analogRead(sensorPin));
}
// fade out from max to min in increments of 5 points:
for(int fadeValue = 255 ; fadeValue >= 0; fadeValue -=5) {
// sets the value (range from 0 to 255):
analogWrite(ledPin, fadeValue);
// sets the delay with the pot value
delay(analogRead(sensorPin));
}
}
you may want to use the map function because if you set the pot to it's max it will take more than a minute to fade in and a minute to fade out.
and this should look like this
int x = analogRead(sensorPin);
x = map(x, 0, 1023, 0, 500);
delay(x);
man great job looks nice.