Setup- Windows XP / Windows Vista (Virtual COM port Driver 2.04.16)- Arduino 0015 IDE (Arduino Duemilanove w/ Atmega328)- Sparkfun FTDI Basic Breakout - 5V- ArduPilot with ATMega328Problem- No connection to the ArduPilot board via the USB port-> Error: stk500_getsync(): not in sync: resp=0x00Facts- The connected FTDI board shows up as COM4 but there is no LED activity at all- The FTDI board's pins to the ArduPilot's pins are: GND->GND, CTS->VCC, 5V->GRN, TXO->TXO, RXI->RXI, DTR->CTS (differs from what is described here)Questions- How did those of you who own the Sparkfun FTDI board connect it to the ArduPilot (pins->pins)?- Shouldn't there be some RX/TX LED activity on the FTDI board when I manually send some characters via the Arduino IDE (115200 baud)?- What should I do next to localize the problem?

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  • My FTDI board shows up as com 9 and XP found it without putting in drivers ...Not sure what the baud rate was but the two LEDs on the FTDI light when up-loading the software ...
  • Thanks again. I figured it out and I could upload the code.

    I added a blog post about How to connect a Sparkfun FTDI board to the ArduPilot. I know it's so easy but it showed me how hard even the simplest things for a beginner can be. I mean like GND = BLK because ground is black...

    3689308441?profile=original

  • Thanks Reto, I didn't get it when I first read Chris' post.

    So the next question is, where can I find the DTR pin on the ArduPilot?
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