Nano Every does not send serial data / usb

Projects Interfacing w/ Software on the Computer
1

Hi folks
So I bought this new Arduino Nano Every and started from one of the many tutorials. I hooked up the Arduino to my PC using the micro-USB cable and started coding. First, blinking the on-board LED, works. Then sending commands via USB serial (I use HTerm, Putty or the Serial Manager) to turn on/off the LED, works. Then I went on to receive data from Arduino... nope. I just can not receive anything from Arduino.

The following super simple sketch does not work, but just the communication Arduino->PC (USB Serial)

int  serIn;

void setup() {
  Serial.begin(9600);
  while(!Serial){}
}

void loop() {
   if(Serial.available()) {    
    Serial.print("Arduino heard you say: ");
    //keep reading and printing from serial untill there are bytes in the serial buffer
     while (Serial.available()>0){
        serIn = Serial.read();
        Serial.print(serIn); 	
     }
    Serial.println();
  }
  delay(1000);
}

What is wrong there?
I used both Arduino 2.0.0-rc3 and VisualStudio Code with Platformio. Nothing. I tried turning on/off CTS RTS (in Hterm thats easy). Nothing.

Everything else seems to work, is my board broken?

2

I had a similar problem with the RP2040 connect when I first tried to use it. It turned out I was using a faulty USB cable! So I'd maybe try replacing your cable

The other thing I would do is try a much simpler code first, maybe something like

void loop(){

    Serial.println(F("Testing..."));
    delay(1000);

}

and make sure that you have the correction termination settings at the bottom of your serial monitor.

3

What exactly does this mean?

4

It just means I tried sending data from Arduino to PC by Serial.write / Serial.print / Serial.println.
I have the impression everything seems to be working (I can at least toggle all pins and receive via Serial.read) except for the transmit path.

5

I now do this. No luck.
Thing is: the RX led is lighting up when I send data from the console to the Arduino. But the TX never lights up. This is a hint that the cable actually is not the problem but that the uC never actually sends something? (I replaced the cable in the meantime - with no luck)

6

OK. I got it. I had to get out my scope and found that the Q1 (Level translating FET) was not soldered well enough. Looks like cold solder joint - this must be a manufacturing problem. I'm up and communicating now. Thanks for your inputs.

7

Where did you purchase your Nano Every from? This is not the first time I see reports of poor manufacturing of Arduino boards, interested if there is a pattern

8

I got it from Digi-Key last week. Pretty annoying actually to have flawed hardware shipped...

9

I got 3 from Arduino directly, burned one but from remaining 2, one is getting hot for no reason

10

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