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Topic: Arduino Nano 3.0: FTDI USB locks up on power up (Read 28 times) previous topic - next topic


The lockup problem is not occur on every system. Only about 2-3% of the user experience this problem. To make sure we fix this problem, since Sep. 2009, all of the Arduino Nano shipped with the Test pin (26) connected to ground. The schematic in product page on Gravitech website has been modified.

If you experience this problem, it can be fixed easily by solder a bridge between pin 26 and 25 of the FTDI chip. Or you can send it back to us and we'll fix it for free. All they have to pay is the postage cost. Please contact us at support@gravitech.us for more info or RMA#.


Ok, i've the same problem and i tried to solder pin 26 and 25 together... now it's working but only when i use external power...
Any chance to fix the usb power only functionality?

Beside thank's Joe for your trick e Metalrex to have tested the Vin functionality.

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