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Re: [Paparazzi-devel] FTDI Utility Board

From: arnaud dumas
Subject: Re: [Paparazzi-devel] FTDI Utility Board
Date: Thu, 21 Apr 2011 07:44:49 +0200

Hi David,

Thanks for your answer.

>> I got paparazzi on PPZUAV store : this one
but it's actually a bit more compicated. I didn't get it myself, I get it from a former group of students of my school, so that the kit wasn't complete and I had to complete it. That's why I did the following mistake.

I finally got PPZ working yesterday night : no blank pb anymore. I was mistaken with wiring : I thought that the serial port of the tiny board should be connected to the J2 port of the FTDI board but looking at it more thorougly (drawing myself the schematic of the utility board) I realise that the FTDI board was not supposed to be emdebbed.  With hindsight I find that some photographs are confusing about that. Anyway it's now quite well working and I'm really relieved. After understanding the wiring pb, I had no pb with the airframe (I modified tinyFw.xml ni the CodeReorg section). 

I have now three leds blinking, a red, an orange and a green.

 The GPS is working too (at least in relative movements) but I'm not sure of its reference point : how does it get its reference point? There is one given in the flight_plan, but the one I got in GCS is quite different : I will give you the exact values after next try (I've quite forgotten them right now). 

I will now connect the ir sensors and servos. Will keep you in touch with my advance,

Bis bald,



2011/4/20 David Conger <address@hidden>

That link is last updated 2009 (from what I just saw). A lot has happened since then :) ... "without success" is pretty vague... to help you I know I would need something specific to tell you to do. 

"PPZUAV assembled kit"? Did you buy the PCB and assemble it or did you buy one assembled by PPZUAV? 

Yes, FTDI utility has two LED. One for power the other for XBee signal. Color doesn't matter. If the power one is on it's powered and if the XBee one is on XBee is transmitting/recieving. The XBee LED is up top by the XBee sockets. If it is off maybe your XBee needs configuring? I notice when programming the XBee in X-CTU software it goes out ... then back on after. 

Here's a schematic for that board. 

David C.

On Apr 19, 2011, at 8:33 AM, arnaud dumas wrote:


I haven't solved my pb yet.

Where can I can find documentation about the LED on FTDI Board and Tiny Board (I have a PPZUAV assembled kit).
In particular, I have no led blinking on the FTDI board, does it mean that it's not powered? I supposed it was by the three threads link between the serial port on tiny board and the FTDI board but I'm not so sure anymore.
I have always the GCS blank pb.

On the other hand, I've rigourously followed the instructions given in

without success

I do need help please!



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