Serial port freezes.

Using Arduino Installation & Troubleshooting
#1

Hello,
I have some simple hardware circuit which looks like:

5VDC-->resistor(150)--->(button switch)--->

from button there are 3 ways

  1. --->resistor(10k)--->GND
  2. ---> LED DIODE-->GND
  3. ---> resistor(100)--->ArduinoPIn(x) on Pro Micro

In setup i doing what i must so:
I setup my Serial Port to open connection with computer.
I setup my ArduinoPin(x) as a digital INPUT. (pinMode(x, INPUT):wink:

My LOOP CODE

void loop() {
 if(digitalRead(x) == HIGH)
 {
     Serial.println("IS ON");
 } else {
     Serial.println("IS OFF");
 }
 delay(250);
}

Till i don't push my switchButtonON this code works great. I just got on Serial monitor "IS OFF" strings. But when i start pushing ButtonON Serial port hangs after a random times just in moment when button is pushed. Arduino still works but communication not.
I know that Arduino works because when i connect this to diode on otherPin then diode is blinking when i push my buttonSwitch.

I must restart Arduino to get communication works again.

Where is a problem?

#2

Is 'x' 0 or 1? Those are the serial port pins so you can't use them for digital I/O if you want to use Serial.

#3

I try to use PIN number 3 or 7. Both same situation.

#4

If you are using serial do not use pin 0 or 1, I think we are ok there.

I'm wondering about your switch wiring, have a look here;

What you are building is actually this;

When I have problems, I usually create a new simple sketch to work on one problem at a time off to the side then when I figure it out I come back to the main program and keep on going. Do the button first then try DigitalReadSerial after.

Good luck and get back to us.

#5

ok, lets do that.
So real view of that circuit looks like that:

LINK TO FULL IMG

and when i put 230v on left side of circuit the serial communication die after 1-10 tries. Arduino Pin work in that time in digital mode.

#6

Alguien me podría ayudar?
Conecte mi arduino a mi pc y todo trabajaba normal, de repente perdí mi conexión y en ningún puerto usb me reconoce el arduino ni en ningun otro pc
Es un arduino leonardo
Cada vez que lo conecto me dice que no me reconoce el dispositivo usb y en la placa de arduino los leds indicadores me mantienen encendidos el de ON el de L, el de TX se mantiene apagado y el de RX parpadea y despues se mantiene encedido
Quisiera saber mi arduino se quemó o si se desconfiguró y quisiera tambien saber si me podrian decir si hay alguna manera que pudiera resolver este problema.
Gracias

#7