Hi, I've been working on a simple project, and after some soldering I noticed the board didn't connect to my pc anymore. not sure what I did before it happened.
It doesn't show in the IDE or the device manager in windows.
Is there anything on the board I can check or fix to make it work again?
I'd like you to try and imagine something for a moment if you could.
You walk into an auto repair shop and say "My car stopped out on the road someplace. I don't remember what I was doing before it stopped. What can I do to get it going again?"
What do you think a mechanic would be able to tell you? Absolutely nothing, right?
You've told us that your Nano doesn't work. You don't remember what you were doing before it stopped working. And you want to know how to get it working again. When you've given us absolutely nothing to work with.
Please take the time to read How to get the best out of this forum, and then add a reply with useful details. Like a clear, legible schematic. Pen and paper is fine. And a focused, well lit picture of your wiring. One with enough detail that people might be able to see something wrong. Both sides of the board would be very useful.
I'll add some info for clarification:
I either had it connected via usb or put 7.5v on the Vin pin.
There were 4 leds, 5pots and a rs485 chip connected.
After I noticed it stoped working, I moved everything to a new circuit board with a new nano, leaving the dead nano in an empty circuit board.
When I plugin the usb, the power led turns on, but there is no connection with the pc.
If you need any more info, please ask.
Thanks
If you don't want to provide the already requested information, good luck and good bye.
Even a hand-drawn schematic would be helpful, along with your code, in a code block. I doubt you'll get much useful help with what you've posted so far.
If communication is not restored even with the new nano board, the problem is not with your board. Do the following;
(1) Check/replace your cable
(2) Check your com port on the device manager of your computer if it's still active.
(3) Is CH341 driver and USB driver still intact on your computer?
More of system settings.
Without you giving us the needed information the only conclusion I can come to is you messed up your computer (PC, Laptop, ...)
We are still waiting for the information we requested in the first place.
I'm sorry, maybe I didn't explain it clear enough.
The board is not connected to anything. I removed all wiring, hoping it would resolve itself, but it didnt. I used the same schematic on a new board without any problems.
The new board works fine, so the pc and usb cable are good.
Two things I can think of:
I shorted something using a multimeter touching two wires or the power on Vin (7.5v) was too high for the nano (compatible) board.
The new board seems happier on 5v.
My question is: is there a way I can check components on the board with a multi meter? Check any resistors, maybe there is a fuse that blew?
@peschermer
If you found a bad component, do you think you could unsolder it and replace it with a new component?
I could try. I'm sure I'll learn something.
Maybe knowing what's wrong will prevent me from making the same mistake in the future.
I never heard of anyone trying to repair a Nano but if you want to try you should first download the schematic.
Next check the board to see if anyhing looks burnt or discolored.
Check the fuse for continuity.
See if any of the capaciors are shorted.
If they all look OK, then the first thing I would do is replace the FT232 IC and see if it works.
Have you tried to connect with everything else disconnected from your board?
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