blown up arduino (?)

Using Arduino IDE 1.x
1

hello everybody,
while working on a project involving an arduino uno and a homemade shield, I accidentally conected the 5v-pin to the outer case of the onboard USB-connector, which I think caused my arduino to blow up. luckily I was powering my arduino through the Vin-pin and not via the USB-connector, since that would probably have damaged my computer.

but, now I cannot upload any codes to the arduino through the USB-connector, although it still can draw power and looks like it is still working, the ON-lights are on when connected, but the TX, RX and L are not.

I was wondering whether or not I could try to program it via the TX and RX pins on the board and an old USB-cable (cut the cable up and connect the wires to GND, 5v, TX & RX accordingly).

so should I try it? or is it better to buy a new Arduino?

thanks in advance!

btw, I fixed the problem on the homemade shield so that it won't shortcircuit again with the outer case of the onboard USB-connector

2

You may have damaged the onboard regulator. However it will probably still work with the 5v from the USB.

Just use a standard USB cable, don't cut it up etc.

Had you shorted the USB 5v, you probably would not have a problem due to laptop internal protection.

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