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16  Using Arduino / Project Guidance / Re: Arduino Mini GPS tracker. Community development on: February 17, 2014, 09:36:46 am
how far do you want to it pick up ? generally speaking the units installed in your car , is a very powerfull radio pushing out between 5-10W of RF power. for my application i would be looking at around 100mw so it would note work very well for car tracking but thats the beauty of it , once the project works nothing stops you from upgrading the unit.
17  Using Arduino / Project Guidance / Re: Arduino Mini GPS tracker. Community development on: February 16, 2014, 02:15:37 pm
Well your correct on both parts just different order . The tracker sends to base station and base station SMS the info the office .
18  Using Arduino / Project Guidance / Re: Arduino Mini GPS tracker. Community development on: February 16, 2014, 11:22:45 am
Robin

have you ever seen them put a Radio collar on an animal to track where they are ? well my application is to build the same thing but small enough to fit on the bird species I want to study (there isn't any small enough at the moment) and once it is developed nothing stops you from incorporating a screen on it and making your own" Garmin", sat nav or what ever you want the point here is it will be small enough to then port to any application and it would be Arduino powered . so you can do what ever you want
19  Using Arduino / Project Guidance / Re: how to interface the rs232 to arduino uno on: February 16, 2014, 10:54:36 am
I'm confused  as to what just happened but I'm assuming we dealing with a cross threader . Mmm jimboZA can't you rather delete all the damn posts ?
20  Using Arduino / Project Guidance / Re: how to interface the rs232 to arduino uno on: February 16, 2014, 10:36:56 am
Yes there might still be an issue with reference voltages but the converter should take care of that if correctly wired
21  Using Arduino / Project Guidance / Re: how to interface the rs232 to arduino uno on: February 16, 2014, 10:19:39 am
Hi Nelson

What voltage does the RS232 unit operate at? I had to use a TTL to RS232 converter to get the signals working correctly.
Something like this unit.
http://www.ebay.com/itm/RS232-To-TTL-Converter-Module-COM-Serial-Board-MAX3232-With-Dupont-Cable-/221372796843

hope you come rite
Rustie
22  International / India / Re: I want to built a multirotor drone on arduino ... need guidence on: February 16, 2014, 10:13:24 am
Hi rajatgaikwad

The resources should be available in India but if note Ebay does ship to India , well the bigger cities anyway.
the minimum amount of hardware that you will need to control the quad is the following.

Micro controller . ( Pro mini)
3 axil accelormeter
and a Wifi shield that can act as a AP. so your phone can connect to it.

this was a good example of one http://hackaday.com/2013/03/19/diy-arduino-pro-mini-quadcopter/ .

good luck with your project !
Rustie
23  Using Arduino / Project Guidance / Re: Community development request. Arduino GPS tracker. on: February 16, 2014, 04:59:36 am
Robin Really?

feel free to use the link or not, Im not sure what harm a link does to your pride but for peace sake I will explain. all arduino GPS logger currently available does not have any real world applications due to its size, I have not seen one Unit that fits into something that you could call functional nor is there one that can do what most commercial trackers does.

 Thus I want to create a GPS tracker logger with a footprint of no bigger than a Arduino Pro mini  with a lot more functions . so if it would please you to find out more please use  the link to see more information on the project.
24  Using Arduino / Project Guidance / TrackerDuino. Community development on: February 16, 2014, 12:12:33 am
Hey Guys

About two years ago I started this project but never got it of the ground due to battery technology not ready yet , the first start up of the project can be seen http://forum.arduino.cc/index.php?topic=116311.msg1591038#msg1591038

I have now began my research again into this project. This time I would like to get the community involved and create an Arduino based DIY GPS tracker that we can all use.the basic  principle behind the tracker is to assist in research on small game birds in South Africa, the outcome and success of the project would be documented and all contributors would be credited for there considerable contribution in the publication.

I have created a new home for the project, so if any of you are interested please take a look at this link for more information on the project http://powerduino.blogspot.com/

UPDATE:
First prototype board for testing the Arduino sleep library.this is just the first of many board on my way to the tracker.

Thank you

Rustie
25  Community / Gigs and Collaborations / Re: Programmer needed for Project Part time project,PAID on: February 14, 2014, 07:45:24 am
Hi Anyone still keen on helping me with this device ?
26  Using Arduino / Project Guidance / Re: wrong values are transmitted with nRF24L01 on: January 23, 2014, 11:57:49 pm
Hey guys
I have been working along the same lines with the same radios  and have a few questions. below is my code

Tx Side
Code:
/*
   1 - GND
   2 - VCC 3.3V !!! NOT 5V
   3 - CE to Arduino pin 9
   4 - CSN to Arduino pin 10
   5 - SCK to Arduino pin 13
   6 - MOSI to Arduino pin 11
   7 - MISO to Arduino pin 12
   8 - UNUSED
 
/*-----( Import needed libraries )-----*/
#include <SPI.h>
#include <nRF24L01.h>
#include <RF24.h>

/*-----( Declare Constants and Pin Numbers )-----*/
#define CE_PIN   9
#define CSN_PIN 10


int Val0 = 255;
int Val1 = 1;
int Val2 = 1;
int Val3 = 1;
int Val4 = 1;
int Val5 = 1;

// NOTE: the "LL" at the end of the constant is "LongLong" type
const uint64_t pipe = 0xE8E8F0F0E1LL; // Define the transmit pipe


/*-----( Declare objects )-----*/
RF24 radio(CE_PIN, CSN_PIN); // Create a Radio
/*-----( Declare Variables )-----*/
short Array[6];  // 2 element array holding Joystick readings

void setup()   /****** SETUP: RUNS ONCE ******/
{
  Serial.begin(57600);
  radio.begin();
  radio.openWritingPipe(pipe);
   radio.setPayloadSize(32);

}//--(end setup )---


void loop()   /****** LOOP: RUNS CONSTANTLY ******/
{
  delay(20);
  Array[0] = Val0;
  Array[1] = Val1;
  Array[2] = Val2;
  Array[3] = Val3;
  Array[4] = Val4;
  Array[5] = Val5;
 
  radio.write( Array, sizeof(Array) );
  Serial.print(Array[0]);
  Serial.print(" ");
  Serial.print(Array[1]);
  Serial.print(Array[2]);
  Serial.print(" ");
  Serial.print(Array[3]);
  Serial.print(Array[4]);
  Serial.print(" ");
  Serial.println(Array[5]);
   
  delay(10);
}//--(end main loop )---

Rx side
Code:
/*  1 - GND
   2 - VCC 3.3V !!! NOT 5V
   3 - CE to Arduino pin 9
   4 - CSN to Arduino pin 10
   5 - SCK to Arduino pin 13
   6 - MOSI to Arduino pin 11
   7 - MISO to Arduino pin 12
   8 - UNUSED

/*-----( Import needed libraries )-----*/
#include <SPI.h>
#include <nRF24L01.h>
#include <RF24.h>
/*-----( Declare Constants and Pin Numbers )-----*/
#define CE_PIN   9
#define CSN_PIN 10

// NOTE: the "LL" at the end of the constant is "LongLong" type
const uint64_t pipe = 0xE8E8F0F0E1LL; // Define the transmit pipe


/*-----( Declare objects )-----*/
RF24 radio(CE_PIN, CSN_PIN); // Create a Radio
/*-----( Declare Variables )-----*/
int Array[6];  // 2 element array holding Joystick readings

void setup()   /****** SETUP: RUNS ONCE ******/
{
  Serial.begin(57600);
  delay(500);
  Serial.println("Nrf24L01 Receiver Starting");
  radio.begin();
  radio.openReadingPipe(1,pipe);
  radio.startListening();;
  radio.setPayloadSize(32);
}//--(end setup )---


void loop()   /****** LOOP: RUNS CONSTANTLY ******/
{
  if ( radio.available() )
  {
    // Read the data payload until we've received everything
    bool done = false;
    while (!done)
    {
      // Fetch the data payload
      done = radio.read( Array, sizeof(Array) );
      Serial.print("Slot0 = ");
      Serial.print(Array[0]);
      Serial.print(" Slot1 = ");     
      Serial.print(Array[1]);
      Serial.print(" Slot2 = ");
      Serial.print(Array[2]);
      Serial.print(" Slot3 = ");     
      Serial.print(Array[3]);
      Serial.print(" Slot4 = ");
      Serial.print(Array[4]);
      Serial.print(" Slot5 = ");     
      Serial.println(Array[5]);
      delay(10);
    }
  }
  else
  {   
      //Serial.println("No radio available");
  }
}
//*********( THE END )***********

this code works great I get all info sent over with no problem.
My Problem is with the range and reliability. the on-board antenna  seems to work but it almost acts like a patch antenna. if you point them towards each other I get 20 meters. let both uno's just lie flat on the table the range is maybe 3-5 meters.  it was my understanding that these units range far out performs the cheep 433mhx Virtual wire units ( 90 meter range).

how can i get them to this range ? the defualt baud rate is 1mbps how do you define a lower buad rate with this library ? 
27  Using Arduino / Project Guidance / Re: How to Measuring resistance on a fence. on: January 23, 2014, 11:47:54 pm
Hi Larry/Paul

thank you for the helpful replies. the problem in SA with electric fence is cost , and by rite all farms should have it but for an average cattle farmer this is not an option as it to expensive.   

Insulation. it is easy enough for a farmer to buy the small white insulating mounts like the image attached.
and when it comes to bushes its a standard to have a dirty road ether side of the fence to stop fires from spreading form one farm to the next.

My question now is and I guess this would take some experimenting, how long can one wire be before a 12v pulse does not reach the other end and a pulse repeater is required.
28  Using Arduino / Project Guidance / Re: wrong values are transmitted with nRF24L01 on: January 23, 2014, 09:17:13 am
I have just tried it and can confirm adding payload size works
29  Using Arduino / Project Guidance / Re: How to Measuring resistance on a fence. on: January 23, 2014, 08:03:06 am
The "Logic " behind it is sound. when working in pounds going with electric fence might be feasible but when working in South African ZAR it make a HUGE difference !  its to solve a problem as explained. and might be GSM might be normal data radio, I have to check if there is GSM signal. so data radio might be better option.
30  Using Arduino / Project Guidance / Re: How to Measuring resistance on a fence. on: January 23, 2014, 07:23:17 am
what would be the best approach. ?

I agree that electric fence is the way to go but if you don't have any cattle to protect/keep in or you just dont have the means to pay for a electric fence then paying $50 for a intruder alert system is a good alternative. I think arduino is a must as you would want to sms or sned data msg to the main house. 
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