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Author Topic: FTDI gone? How to bypass it?  (Read 1151 times)
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Hi,
My arduino mega 1280 works propely, that means, it executes the sketch it currently has in its memory.
Problem is, if i plug it to the computer it says "device not recognized", so I assume the bulit-in ftdi converter is dead. How can i still program the atmega using a "common" ftdi adapter??
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Hi,
My arduino mega 1280 works propely, that means, it executes the sketch it currently has in its memory.
Problem is, if i plug it to the computer it says "device not recognized", so I assume the bulit-in ftdi converter is dead. How can i still program the atmega using a "common" ftdi adapter??

By wiring the send and receive TTL serial signal lines from the new ftdi to pins 0 and 1 (or is that 1 and 0, I always get in mixed up  smiley-wink ) on the arduino mega shield connector, plus a ground wire from the FTDI adapter to a arduino ground pin, and you should be back in business.

But first you should check to make sure you don't just have a corrupted or missing FTDI USB driver in your PC. Try deleting it and re-installing the FTDI driver and see if that works before going with a new external FTDI serial cable.

Lefty
« Last Edit: September 22, 2012, 10:49:57 am by retrolefty » Logged

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Also you can buy another ftdi and replace it without too much troubles, just normal soldering iron.
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With a steady hand and good eyesight... smiley

http://fightpc.blogspot.co.uk/2012/04/mending-my-mistakes.html

I would not do it that way (with a hot air gun) myself, if you are really 100% sure the chip is dead, carefully cut the legs from the body and then desolder whats left.
« Last Edit: September 22, 2012, 12:30:57 pm by Lakes » Logged

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It did worked wiring to the serial 0 tx `n` rx, many thanks to all of you.
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