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Common Communication issue between ArduPilot V2 and FTDI

Posted by Cooper on September 17, 2010 at 3:10pm
hey im having this same problem wih this sync issues. there is so many people with the same problem, im beginning to think it's a bug in the hardware or code.  

avrdude: stk500_getsync(): not in sync: resp=0x00
avrdude: stk500_disable(): protocol error, expect=0x14, resp=0x51.

if this is such a common issue, someone must have thought of a simple way to work around this.

i followed everything on the manual and everything!  please let me know what you did to fix it.  im running vista 32-bit, and arduino 2.7.1.  please take a look at my youtube video to compare your similar issue.  and please make suggestions of what u did, or would do.  thanx

here the video of it
https://www.youtube.com/watch?v=xXgbHzE2zUQ

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Tags: ftdi, com, in, issues, not, port, problems, sync
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Replies

  • Florin Mingireanu September 19, 2010 at 12:27am
    Also please make sure that you did the following: "Important: if you're using Windows, you must go to the Control Panel/Device Manager and make a change to the COM port assigned to the FTDI cable. Find the USB Serial Port entry as shown here (your FTDI may have been assigned to a different port than the 3 shown here; it doesn't matter what number it's given) and under Properties/Port Settings/Advanced, ensure that the "Set RTS On Close" box is checked, as shown below. Once you've made this change, you won't have to do it again. "
  • 3D Robotics
    Chris Anderson September 17, 2010 at 3:19pm
    Cooper, this is the #1 issue for anyone working with Arduino projects of any sort (not just ours), and it derives from the FTDI interface and drivers, which are complex. It is almost invariably due to a problem in your setup (it has nothing to do with the code, and rarely is due to the hardware). Can you confirm that you have checked EVERY ONE of these steps, from the manual?
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