Is my Arduino nano Broke?

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1

in 8/26/2023, i try to connect my arduino nano to my laptop, after i plug my arduino to laptop, my arduino was like trying to reset itself and after that my windows say "Usb not recognized". and it happening repeatedly like 3 times every 10 seconds. after i checked in device manager, my device manager was like scanning for hardware changes repeatedly so fast

but in 8/24/2023, my arduino nano still can connect to my laptop

this is the component that i plug into arduino nano
My Files.PDF (14.8 KB)
My component >> arduino)
9V >> Vin
VCC/VDD >> 5V (for CD4052, because in my schematic there is no power pin for CD4052)
GND >> GND
B >> D11
A >> D12
X >> A0
Y >> A1

2

Hi, @salmanaf

Please disconnect the component and see if you can connect and program the Nano.

image
image984×901 48.6 KB

Where is the current limit resistor for the IR emitters?

How do you power the 4052?

Where did you get the circuit from of your component?

Thanks.. Tom.. :grinning: :+1: :coffee: :australia:
PS. Do you have a DMM? (Digital MultiMeter)

1 Like
3

i just connect my nano to my laptop and nothing happen
and if i use my second nano (i was not use this one because it was half broke) it can detect to my laptop

i know my nano was broke but at least i don't want to do same thing to my new nano

4

using 5v from nano

i made this circuit alone

yes

i think the IR doesn't need resistor, so there is no resistor for IR

thanks :smiley:

5

My Files.PDF (14.8 KB)
sorry @TomGeorge, there is some wrong naming for diode from my schematic, so there is the new for you

6

You are applying 9 volts to 5 volt pins A0 an A1?

7

Hi,

Did you make the PCB yourself?
If so can you please post PCB patterns of your PCB?

image
image1024×878 47.5 KB

Can I suggest you get your symbols correct.
What are D1 to D8? Sensors?
What are D9 to D16? Emitters?

Show us your calculations for the series of emitters that doesn't need a current limit resistor.
Where does Vcc go to?

Tom.. :grinning: :+1: :coffee: :coffee: :australia:

8

D1 to D8 is Photodiode like this
image

D9 to D16 is Infrared LED like this
image

if i see here, the max foward voltage for infrared is 1.7V. so, if i plug the infrared series, and i give 9v, there is 1.125V for every infrared so i think it's okay

the vcc was connect to cd4052, it was like not connected, but it connected
this the pcb patterns
Sensor_SL-02.PDF (37.2 KB)

9

no, i use voltage divider before photodiode sensor. so it not 9V, it's 4V

10

Have you measured the volt drop across each LED emitter in your circuit?
Have you measured the current flowing through the LED emitters in your circuit?

Your PCB;

image
image1601×754 50.2 KB

Tom... :grinning: :+1: :coffee: :australia:

12

for current limiting no, but for voltage drop across each led yes. the led foward voltage was around 1.1V to 1.2V

thanks for helping me :slight_smile:

13

How much current?

Tom... :grinning: :+1: :coffee: :australia:

14

sorry i can't measured it, because it was soldered into pcb. but if this the main cause why my nano broke i will try to measured it

15

New Information. If i plug 9V to Vin nano and gnd to gnd nano, the nano can run without reseting itself. But, if plug it into my laptop, the nano automatically reseting it self and my windows say "Usb Not Recognized"

16

How do you know it was trying to reset itself?
Was the green power LED blinking?

17

in my nano, if i press reset button, the tx led blinking, and if i release the reset button the light/D13 button was blinking. and it happen if i plug my nano to laptop

18

I'm not to sure what's wrong but the TX light should not blink when you hold the reset button.

19

sorry i was wrong, tx was blinking because i use Serial.println() command, sorry for that :grinning:

20

So the nano was working at some point because you were able to download a program.
So something happened between the time you downloaded that program and 8/26 but I still don't understand why you think he nano is resetting itself.

21

why i think my nano is resetting it self?
because in my program i use Serial.println() command which is tx or rx light (idk the specified) will be blinking while i plug my nano to 9V power or laptop

in 26/8, after i plug my nano to 9V power. First the tx or rx led is still blinking, then 2 seconds later there is a notification and it say "Usb not recognized". and the notification was repeatledly. Until at some time my tx or rx led was turning off like 2-3 seconds, and after that my D13 led was blinking once

this my program if you still understand why i assumed if my tx or rx pin turned off in 2-3 seconds, my nano was resetting itself

int sensor[8] = {0,0,0,0,0,0,0,0};

void setup() {
  Serial.begin(9600);
  pinMode(14, INPUT);
  pinMode(15, INPUT);
  pinMode(11,OUTPUT);
  pinMode(12,OUTPUT);
  digitalWrite(11, 0);
  digitalWrite(12, 0);

}

void loop() {
  for(int i = 0; i < 4; i++){
    digitalWrite(11, bool(i & 1));
    digitalWrite(12, bool(i & 2));
    delay(10);
    sensor[i] = analogRead(14);
    sensor[i+4] = analogRead(15);
  }
  for(int i = 0; i < 8; i++){
    Serial.print(sensor[i]);
    Serial.print("\t");
  }
  Serial.println();
}

@jim-p thanks for still helping me :smiley: