Arduino/electronics Newb

Question

Hello there. So I got my self a Arduino uno starter kit, sins i have wanted to get in to electronics forever, and I have started to hack stuff like u are suppose to, but now I got some problems that I don't know how to solve. I have narrowed it down to this circuit, I got a Piezo to create some noise and a LED where the brightness is controlled by analogWrite. The problem is, that the diode only make a few blinks or don't emit light at all, but when i comment out the Piezo code, the led is working as expected. I sorry for my crude circuit drawing skills const int ledPin = 11;
const int speakerPin = 4;

int ledBrigthness = 250;
int pitch = 50;

void setup() {
 pinMode(ledPin, OUTPUT);
 pinMode(speakerPin, OUTPUT);
 Serial.begin(9600);
}
void loop() {
 setBrightness();
 setPitch();
}
void setBrightness() {
 analogWrite(ledPin, ledBrigthness);
}
void setPitch () {
 tone(speakerPin, pitch, 1000);
}

Robert Peter Oakes · Accepted Answer

lol, just found this

Only one tone can be generated at a time. If a tone is already playing on a different pin, the call to tone() will have no effect. If the tone is playing on the same pin, the call will set its frequency.

Use of the tone() function will interfere with PWM output on pins 3 and 11 (on boards other than the Mega).

It is not possible to generate tones lower than 31Hz. For technical details, see Brett Hagman's notes.

NOTE: if you want to play different pitches on multiple pins, you need to call noTone() on one pin before calling tone() on the next pin.

put the LED on pin 5 instead

if this answers your question, please mark as "Correct Answer", thanks

this information is found in the Arduino Site at the following location

Arduino - Tone