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Topic: RX / TX always on (Read 2598 times) previous topic - next topic

stinky

I bought a batch of assembled usb boards

They seem to be working fine but when I power them from the power in, the RX / TX lights are always on. If I power by USB, they go off.

Any idea why???

Thanks!

mellis

It's normal, albeit a bit strange.  I'm not sure of the details, but basically since the FTDI USB chip isn't powered, the LED logic isn't connected and the LEDs flicker/turn on.

admin

correct
you can consider it a "bug" in the current arduino board v3 which has been fixed in version v4
which will be called Arduino NG and will be available from the day Ars Electronica opens.


massimo

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