Trouble Bootloading

Hello,
I need urgent help regarding my Arduino Nicla Voice as it is a major part of my final university project. I ran some examples like alexa demo that all worked, however today i am trying to connect my board but it is dead and gets very warm while plugged in. plugging it into my laptop makes a sound but nothing else. I am not able to upload any code on it anymore, i have tried the double-tap reset and holding it while plugging but nothing seems to work. Anytime i try uploading anything i get the following : Sketch uses 56076 bytes (10%) of program storage space. Maximum is 527616 bytes. Global variables use 12256 bytes (19%) of dynamic memory, leaving 52032 bytes for local variables. Maximum is 64288 bytes. Open On-Chip Debugger 0.11.0+dev-gab95bac57-dirty (2021-05-11-10:45) Licensed under GNU GPL v2 For bug reports, read OpenOCD: Bug Reporting debug_level: 0 swd Error: Error connecting DP: cannot read IDR Failed uploading: uploading error: exit status 1

Hi @saraavdos.

This might be caused by a short or external circuitry connected to the Arduino board drawing excessive current.

Make sure the board is not sitting on anything conductive that could short the contacts on the bottom of the board. Inspect the board carefully on both sides to make sure there isn't any conductive debris (e.g., loose beads of solder, strands of wire, or component leads) on the board or on the surface the board is sitting on.

If you have a shield or any external circuitry or components connected to your Arduino board, try this experiment:

  1. Disconnect the USB cable of the Arduino board from your computer.
  2. Disconnect any shields, modules, external circuitry, etc. from your board.
  3. Connect the Arduino board to your computer with a USB cable.

Now check to see if the problem still occurs.

This experiment will determine whether the problem was caused by the external circuitry. If so, you can then focus your attention on identifying the specific problem with the circuit and resolving it.

Also make sure that you never ever make wiring changes to a circuit when the processor is powered up. This can cause a condition known as latch up, where heavy currents are drawn and damage can very likely occur to your processor.

Hello, it was not connected to anything else it is just my laptop, a micro USB and the arduino. doesnt have any shielding or external circuitry.

hello, I have no circuit connected to it.

The problem is probably caused by the Arduino board having suffered permanent physical damage. I recommend you carefully review what you were doing with the board the last time it was in a working state. You may be able to identify the cause of the damage and in this way profit from the mishap by gaining knowledge that will allow you to avoid subjecting boards to the same conditions in the future.

Unless you have the right tools on hand and the skills to use those tools, repair of the board will not be feasible. I suggest you attach a note to the damaged board describing what is wrong with it and put it in your electronics salvage bin. Then purchase a replacement board.