FTDI must be unplugged every time to upload sketch

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  • January 19, 2016 at 6:35 am #798
    sockbot
    Member

    I am having a problem where my backpack won’t accept a sketch unless I unplug both power and the FTDI cable then replug everything every time I want to upload a sketch. Is this a hardware problem or something I can solve in software?

    avrdude: stk500_recv(): programmer is not responding

    Using Arduino 1.6 on OSX with a genuine FTDI cable from Sparkfun.

    January 20, 2016 at 4:52 pm #2390
    Michael
    Keymaster

    That sounds strange but I can’t imagine that it has anything to do with the backpack hardware. The ATmega328 chip has the same Uno bootloader as any Uno-compatible Arduino.
    Are you certain that your FTDI cable is genuine and not one of the cheap clones that Sparkfun sells? I quit buying them from Sparkfun because they had a 50% failure rate and Sparkfun refused to believe that was a bad thing.

    January 23, 2016 at 8:51 am #2391
    sockbot
    Member

    I managed to resolve this problem by installing the 2.3 VCP drivers from the FTDI website. I no longer need to unplug the cable every time to upload =)

    The native OSX drivers don’t work properly.

    January 23, 2016 at 12:50 pm #2393
    Michael
    Keymaster

    Ok that’s good to hear. I use a mac for all development and use the official FTDI driver.

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