Arduino Nano and PWM don't work with 433Mhz Switch

Development Tools IDE 1.x
1

Hi, i have some problems with arduino nano, 433mhz receiver and pwm!

If i change the value of the pwm signal (witch control led brightness) the receiver stop working! I found this user witch has a similar circuit and similar problems.
http://forum.arduino.cc/index.php?topic=323244.0

The thread is a bit old and it didn't solved my problem, if i connect the 12v directly into the VIN pin there is the same problem, and also i have the necessity to power it by the usb. At the moment i have solved the problem by powering the 433mhz receiver with an external battery, but i want to power it from arduino!

The whiring is almos the same as the user in the thread that i have linked, and this is my code (but it almost useless in this case)

int luminositab = 255;
int luminositaa = 255;
bool down = false;
int l;
#include <RCSwitch.h>
RCSwitch mySwitch = RCSwitch();

void setup() {
pinMode(3, OUTPUT);
pinMode(5, OUTPUT);
pinMode(7, OUTPUT);
digitalWrite(7,LOW);
Serial.begin(9600);
mySwitch.enableReceive(0);
Serial.println("Avvio");

analogWrite(3,luminositab);
analogWrite(5,luminositaa);

}

void loop() {
if (mySwitch.available()) {

int value = mySwitch.getReceivedValue();
value = value - 14483200;

if (value == 0) {
Serial.print("Unknown encoding");
} else {
Serial.print("Received ");
Serial.println( mySwitch.getReceivedValue() );
switch (value) {

case 1: {

if (luminositab > 0) {
luminositab = 0;
} else {
luminositab = 255;
}

if (luminositaa > 0) {
luminositaa = 0;
} else {
luminositaa = 255;
}

} break;

case 5: {
if (luminositab < 255) {
luminositab = luminositab + 51;
} else if (luminositaa < 255) {
luminositaa = luminositaa + 51;
}

} break;

case 6: {
if (luminositab > 0) {
luminositab = luminositab - 51;
}
if (luminositaa > 0) {
luminositaa = luminositaa - 51 ;
}

} break;

case 7: {
luminositab = 255 ;
luminositaa = 255;
} break;

case 8: {
luminositab = 128 ;
luminositaa = 128;
} break;

case 9: {
luminositab = 60 ;
luminositaa = 60;
} break;

}
analogWrite(3,luminositab);
analogWrite(5,luminositaa);
}
mySwitch.resetAvailable();
}

if (Serial.available() > 0) {

l = Serial.parseInt();

switch (l) {

case 0: luminositab = 0; break;
case 1: luminositab = 10; break;
case 2: luminositab = 25; break;
case 3: luminositab = 50; break;
case 4: luminositab = 100; break;
case 5: luminositab = 150; break;
case 6: luminositab = 200; break;
case 7: luminositab = 255; break;
case 8: luminositaa = 0; break;
case 9: luminositaa = 10; break;
case 10: luminositaa = 25; break;
case 11: luminositaa = 50; break;
case 12: luminositaa = 100; break;
case 13: luminositaa = 150; break;
case 14: luminositaa = 200; break;
case 15: luminositaa = 255; break;

}

analogWrite(3,luminositab);
analogWrite(5,luminositaa);

Serial.flush();
}

/*
if (luminosita < 255 & down == false) {
luminosita++;
delay(delayl);
}

if (luminosita == 255) {
down = true;
}

if (luminosita <= 255 & down == true) {
luminosita--;
delay(delayl);
}

if (luminosita == 1) {
down = false;
}

Serial.println(luminosita); */
}

Can somebody help me? I tried everything but at the moment the only solution is powering it by an exernal supply! How can i solve this? Thanks!

Update 1: i found this user witch have a similar problem, it's a good idea to use capacitor? And how i can connect it?

2

Also a minute of silence for my nano died trying to help me to solve the problem :sob: The voltage regulator burned. Photos in the attachment.

IMG_8759.jpg
IMG_8759.jpg1200×800 215 KB

IMG_8760.jpg
IMG_8760.jpg1200×800 325 KB

3

Going to try replacing it?

Run at less than 12V next time.
What do have wired up? Post a schematic.

4

The schematic are pretty much the same as the other thread that i have linked above of the user @ant_thomas This image

I don't know if i'm going to replace it because broken also the internal isp, so at this point i think that it is cheaper to buy another arduino (this was a fake). At the moment it works only if i power it up by the pin for the external isp (Data via usb is working, but no alimentation). And pin VIN don't work anymore because of the bunerd regulator.

5

I found this user witch have a similar problem, it's a good idea to use capacitor? And how i can connect it?