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Author Topic: MFD Antenna Tracker - Manual Tilt Mod  (Read 957 times)

Coyote

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MFD Antenna Tracker - Manual Tilt Mod
« on: March 31, 2019, 03:41:09 PM »

Hi Guys

Today I set about modifying the My Fly Dream ATT. I wanted to be able to use it as a tracker, but when I don't have a trackable plane up I wanted to be able to still point the antenna at the plane, something you couldn't do, it was either 45 degrees, straight ahead or nothing. The pan is fine, in offline mode the servo is not powered so you can freely move the pan around as you please.

First I needed to work out where everything would fit because I needed space to mount a switch for modes and a potentiometer for trim adjust to one of the side panels :

The servo side was a no go, no room at all, even with the jack plug mod I had done previously there might be still enough room to the rear of theis panel :



Yup, looks like just enough in front of the capacitor :



Around the other side I located where the tilt servo plugs into and checked to see if it would be suitable to power the mod as well as the servo :



I ordered Arduino Nano :



Then set about making up the wiring, wiring wise its a very simple circuit in principle :



Now to add the code :)

Code: [Select]

#include <Servo.h>

Servo myservo;

int potpin = 0;
int val;
 
void setup() {
  myservo.attach(9);
}

void loop() {
  val = analogRead(potpin);           
  val = map(val, 0, 1500, 140, 20);     
  myservo.write(val);                 
  delay(15);                           
  }


First I tested in principle on the bench then added it to the tracker :



Here is the bench test, then the servo throw tuning of it :



Some initial tuning was required because of where the Nano sat, external influences meant the values in the codeo pasted above were actually the end result.

Job done, all in and secured :)

« Last Edit: March 31, 2019, 06:03:16 PM by Coyote »
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Education and schoolin is good, but FPV is gooder :)

FPVSteve

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Re: MFD Antenna Tracker - Manual Tilt Mod
« Reply #1 on: April 01, 2019, 10:48:05 AM »

Very good mate, I'm impressed :)
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