I have a damaged Arduino Uno (I suspect I did something stupid like trying to drive a DC motor from it): it is detected when I connect it to the computer but I cannot push anything to it (programmer is not responding) and it fails the loopback test. According to the support docs,, "If it [loopback test] fails, your board is damaged beyond economical repair and should be replaced."
I am curious if there is any way of fixing, recycling or repurposing either the full board or some of its components - I don't like things going to waste. I have a bunch of other working boards (two Uno R3s, as well as some Raspberry Pis and ESP32).
If anything, I'd be happy to do a surface soldering exercise, especially if it's something like a voltage regulator.
What have people done with their damaged Arduinos and are there any tips for going beyond the loopback test to diagnose the problem?
It's a clone by the looks of it; compare it with an image of a real one
But it has the 16U2 (the square chip next to the USB connector); the fact that it's recognised as Uno also indicates that.
My conclusions are that at least the 16U2 is not working properly and that the 3.3V regulator is also gone. I would not be inclined to fix it but if I was , that's what I would start fixing. If the board works after that, it might be unreliable as one can't judge if the 328P is dying a slow death.
Final conclusion: throw it away.
Thanks - replacing the 16U2 is way above my rudimentary soldering skillset so I agree with the "toss it" assessment - I'll bring it to the local electronic waste drop-off when pandemic permits.
FWIW I realized it doesn't have the Arduino name/logo so it's a bona-fide clone.
If the 16U2 is shot, you can cut the traces it has with D0/D1 and use an external USB/Serial adapter (FTDI Basic) for serial downloading.
This topic was automatically closed 120 days after the last reply. New replies are no longer allowed.