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Old Nov 04, 2012, 10:36 AM
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ntgr's Avatar
Joined Oct 2011
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Hi.
Today i made my first attempt to bench test the Antenna tracker with no success .
What i've done is.
1.Uploaded the AT_TX sketch to my 1st arduino.(Transmitter)
2.Changed the baudrate to 115200 here ( because my GPS OUT settings are 10 Hz 115200 )

void setup() {
Serial.begin(115200);
pinMode(10,OUTPUT);
TCCR1B = 0x00; //stop timer
.......etc.....

3. TX out from my GPS goes to RX (physical PIN 2) of my "transmitter"
4. Power up everything and opened Serial monitor

I received the following

Projecto DIY_AT, Tx V02a-alfa
Ready!!!
no GPS, last 20s

What i m doing wrong ?
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Old Nov 04, 2012, 11:16 AM
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Found it....
NO COMMON GROUNG WITH GPS !!!!!
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Old Nov 04, 2012, 01:58 PM
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Portugal
Joined Mar 2004
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Now you can use NMEAGEN and simulate a circular trajectory and see the pan and tilt servo following the "model".

Do it first with the wired connections and then with the RF link if the 1st test succeed.
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Old Nov 05, 2012, 07:36 AM
KISS
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Joined Oct 2009
1,199 Posts
This is great just what I need.
I'm planning to decode FY-21AP/FY-31AP autopilot data and send it via audio to the ground.

http://www.rcgroups.com/forums/showt...9#post23186248
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Old Nov 05, 2012, 12:33 PM
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Joined Oct 2011
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What kind of servo should i use ?
A modified continuous servo will do the job or i have to buy something like this
http://www.ebay.com/itm/SM-S4309R-JR...item1c183e443a
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Old Nov 05, 2012, 12:37 PM
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I use a GWS S125 1T 2BB Sail Winch Servo for PAN servo and a regular servo for TILT
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Old Nov 06, 2012, 04:39 AM
KISS
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Suggestion, piezo speaker alerts would be very useful while you are flying instead of only led, e.g. when tracker is not receiving valid data.
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Old Nov 06, 2012, 04:50 AM
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Joined Sep 2010
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Quote:
Originally Posted by jalves View Post
msev,

The work is on hold, have some troubles to work first.

The mail man lost a helper I bought to work the video signal
, bad mail-man ... So did you re-order that "helper" ? ...Is it already on the slow-boat to Portugal
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Old Nov 06, 2012, 08:40 AM
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Quote:
Originally Posted by msev View Post
, bad mail-man ... So did you re-order that "helper" ? ...Is it already on the slow-boat to Portugal
It was an expensive helper, have to "breath" again to be able to order it again .



piezo speaker addition is a good idea, I will implement that asap.
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Old Nov 06, 2012, 10:56 AM
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Denmark, Capital Region of Denmark, Naerum
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Quote:
Originally Posted by jalves View Post
It was an expensive helper, have to "breath" again to be able to order it again .



piezo speaker addition is a good idea, I will implement that asap.
Was it a fancy dual-channel high-speed ADC with a screen and external connections by any chance? (hint hint, oscilloscope)
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Old Nov 06, 2012, 11:03 AM
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Portugal
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Yes, a old digital one.

The problem is that only now I am aware of the caps problem of this vintage models

It seems it is again on my way, lets see if the mail man this time delivers the goodie to whom it belongs...
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Old Nov 06, 2012, 12:36 PM
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Sorry to hear that it was expensive ... Thanks for sticking with the project !
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Old Nov 06, 2012, 01:20 PM
KISS
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Quote:
Originally Posted by Dimitris76 View Post
It's good to have innovation and many options to choose from but Dakar with it's matching Lynx tracker has been around for some time now, the airborne board is smaller/lighter, needs much cheaper hardware (10x cheaper than the arduino boards) and doesn't occupy your audio channel either...

Dimitrios
The fact that its not open source defeats the purpose. The point of projects such as this is to share with other and to gain with as much developers involved as possible. For example this antenna tracker can be used with different onboard solution thanks to open source.
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Old Nov 06, 2012, 04:44 PM
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The goodie is my hands, time to invest some free time playing with the new toy
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Old Nov 08, 2012, 09:46 AM
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Quote:
Originally Posted by jalves View Post
The goodie is my hands, time to invest some free time playing with the new toy
Awesome, so this equipment will help you with video-telemetry development? Very cool
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