No more able to use my Arduino Micro

Development Tools IDE 1.x
1

Hi there !

I recently bought a joystick to play some flight simulation game, and I'm now planning on making my own throttle controller.

For this I bought an Arduino Micro, and try some prototyping with a few buttons, potentiometer and LED

I was quickly able to control the throttle in game with a potentiometer, so I started to build the shiny and solid final product.

Now I only need to finish the code, but yesterday, while I was working on it and made several Compilation / upload / test loops, the Arduino IDE suddendly stopped to show me a COM port for my Arduino micro, and Windows started to tell me that my micro is now an "unrecognized device".

Now I'm stuck and after a few hours googling for a solution I'm still unable to make the Arduino Micro works again.

Some details :

  • i'm working on windows 7 64bits
  • when I plug the micro to USB, the blue led "ON" so I guess it's not burned
  • the RX led link 3 times and then windows told me about the unknown device
  • plugged or not, Arduino IDE is only showing me COM1 as selectable port
  • When i plug my Elegoo R3, then Arduino IDE show me a new usable COM port as Arduino/Genuino Uno
  • compilation / upload works fine with the Elegoo board.
  • Exact same behavior (for all thoses points) on another Windows 7 computer with freshly installed Arduino IDE

Can someone help me ?

Thanks a lot !

Regards,

Valerian

2

I have a very similar problem.

I used the Arduino Micro with the Adafruit BNO055 Breakout board, just to test the behavior.
But all of the sudden it stopped beeing recognized. ("couldn't be installed/unknown device") and it doesn't show up under Serial Ports. Sometimes, after restarting Windows, it's recognizable for a few seconds.
The Problem persists when I only plug the Arduino in, with no Pins connected.

I reinstalled all the drivers (including FTDI), reinstalled the IDE (switched back to 1.6.0, now I'm back at 1.8.2)
And also I tried three PCs. 2 were Win 7 Pro 64 Bit and 1 Ubuntu OS.
Holding the reset Button for different Intervals while compiling/before uploading doesn't help either.

The problem occurred on three independent Arduinos.

Would love some help aswell.

3

When the arduino is no longer recognised by windows (when it was fine earlier) this usually means either that :

  1. There is an electrical disconnection on some of the USB pins (check wiring again)
  2. The arduino is not running (check all wiring, connections, check that the oscillator is running using a scope)
  3. Bootloader problem

Try to remember if you did something on your circuit that caused the arduino not being recognized.

Also try to change USB ports on the PC (this will assign a different COM port) and restart the PC.

4

Thanks for the thoughts on the matter.

Unfortunatly it sdoesn't work still

  1. I tried different cables and the blue LED indicating a connection/current flow is glowing.

  2. I haven't connected anything to any PIN atm. How do I check the oscillator?

  3. After deinstalling all COM Port Hardware using the device Manager it can successfully install the bootloader, the Arduino itself still can't be thought.

5
  1. I haven't connected anything to any PIN atm. How do I check the oscillator?

To check that the oscillator is working you need to attach an oscilloscope on the crystal on the PCB, or on the two 22pF capacitors that are near it. You should then be able to see the 16MHz sinusoidal wave on the scope. Do you have an oscilloscope?

After deinstalling all COM Port Hardware using the device Manager it can successfully install the bootloader, the Arduino itself still can't be thought.

Do you mean that you have re-programmed the bootloader on the chip? Or you mean you have de-installed and then reinstalled the USB Arduino driver on the PC?
If the case is the latter, then it doesnt really prove anything.
You really need to make sure the arduino is running first as explained in (2) above