I trying to make the infrared receiver receive signal from infrared transmitter. The receiver circuit that I used is attach below.
So when I open the serial plotter, there is a signal on coming even I did’t transmit anything. But It also can detect transmit signal when I turn on the transmitter.
code that I use for transmitter is just blinking
void setup() {
pinMode(8, OUTPUT);
}
void loop(void) {
digitalWrite(8, HIGH);
delay(11);
digitalWrite(8, LOW);
delay(11);
}
And for the receiver side
int ifRead;
void setup() {
pinMode(A0, INPUT);
Serial.begin(9600);
}
void loop() {
ifRead = analogRead(A0);
Serial.println(ifRead);
}
I also attach picture of signal and infrared receiver that I used
Picture at serial plotter is when I didn’t transmit anything
Picture at serial-with-transmitter is when I turn on transmitter.
How can I just show the signal from transmitter? or I need to change the circuit or photodiode?
Sorry for English. Its not my main language.
