Hello all,
I’m having trouble uploading code the ardupilot getting the sync error each time i try to upload. Im not sure how relevant this is but i have successfully the MUX can get the LED’s to switch on/off.
I have tried using two different USB->TTL adapters on both a system running XP SP3 and one running windows 7.

The one listed here was provided with remzibi’s OSD and has been successfully used it with the OSD and a TTL GPS.

I also tried to use this one. I couldn’t get it to work but have not yet tested it before so it could be the adapter that is faulty.

I believe i have everything connected ok, the ardupilot is powered by the +- pins of a ESC and the USB-TTL adapter is connected as follows:
USB-TTL adapter: Ardupilot
GND BLK
TX RX
RX TX

I have read through the debugging tips without any further success.
I have definitely selected the right COM port and selected arduino . I cannot seem to access the RTS setting in your PC's port settings, perhaps it has changed?.
Any advice would be much appreciated.
Cheers,
Nick

Tags: ttl, upload, usb

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The fact that you can't access the RTS setting is a clue that you're not using a proper FTDI driver. When Windows (Vista or XP) sees a serial-via-USB cable, it should give you the following option on that port (Port 9 in my case):


If you can't get to this screen, you don't have the right FTDI driver loaded, which explains all of your problems. You can get the correct drivers here.
I got problems too:
Ordered Ardupilot and the recommended FTDI-board, installed the virtual com-port drivers and get the error:
"avrdude: stk500_recv(): programmer is not responding" when trying to upload with arduino.
Prior to this i accidently pressed the burn bootloader button, which caused everything to hang. could that have damaged anything?
I'm on a mac.

Any suggestions what I could do?

cheers,
Ulf

edit: i use no power source except coming throug usb/ftdi board to the ardupilot board.
Ulf: Please follow the instructions. They say you must power the board with an ESC or other power source. You CANNOT power it with the FTDI/USB (this is to avoid power conflict). If you're still having trouble, try these debugging tips.
Thanks for the instruction link, Chris, totally overlooked that section.
It was the Board setting:
Arduino Diecimila or Duemilanove w/ ATmega168
instead of the right
Arduino Duemilanove w/ ATega328

wohooou.
...
Wow, forgot about this post.
I got everything working some time ago using the recommended sparkfun FTDI cable.

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