Arduino GPS tracker and Google Maps Tutorial

September 13, 2019

Dear friends welcome back! In this video
we are building a GPS data logger using Arduino and a GPS shield. Let’s start! In today’s video we are using the GPS shield from maker studio in order to store our location’s coordinates in a SD card. We read our location’s coordinates every five seconds along with date and time. All this data is then stored in a comma-separated file in a micro-SD card using the shield’s embedded SD card module. For convenience I have also put an LED on the GPS shield in order to visually check the status of the program that Arduino is running. If the LED is lit but not flashing, there was problem with the SD card, so our project is not saving data. If the
LED is flashing quickly, like it is right now, the SD card is working but we don’t have a position fix yet from GPS. If the LED is blinking once every five seconds everything is
working fine and data is stored to the SD card. Of course indoors we can’t have at GPS fix so
let’s go outside, let’s go kayking with the Arduino GPS data logger with us on the kayak (it’s a Sevylor Colorado). Ok we are outside. Let’s go kayaking with our do it yourself datalogger using Arduino. OK. SD is working, waiting for position fix. OK, Arduino is writing to the SD card I will now put this here in order to be stable, I’ll close the box and we
are ready to go to the open sea. Let’s start. OK. Our journey has started. Let’s do it. OK. Now we have to go back there. Let’s do it. We are back and in the SD card there is a file with our journey’s coordinates. Αs you can see the file contains more
than 800 entries. As you can see each entry has an id, the date, the time, the latitude and the longitude. Now all we have to do is to use a tool in order to convert
this file into a .kml file in order to see our journey on Google Earth. The tool we’re going to
use is the GPS visualizer, an online tool that creates .kml files from GPS data. All we have to do is to click here in order to create a Google .kml file. Then we upload the file that our Arduino GPS project created and we define some parameters for the file. For example the line width and the color. I have defined that we want the color of the line to be green. Then we click the create .kml file and that’s it. We download it from here and we open it with Google Earth. As you can see in Google Earth all the data from GPS data logger is visualized and you can see the journey I had with the kayak in the sea. That’s
the starting point and that’s the journey I had and the point at which I started to return back. The
distance I travelled was around 6 Km. Building this project extremely simple. All we need is the
GPS shield from maker studio a micro SD card and of course an LED. I have connected the LED to digital pin 9 because digital pin from 13 to 10 are used from the SD card module. Digital pins 2 and 3 are use by the GPS module so digital pin 9 is available to use with the LED. If we power on Arduino, we can see that SD card is initialized, OK works fine, now we wait for GPS signal fix. I went outside in order to have a GPS signal
fix, so as you can see the current draw of this project is around 100 mA. So with this power bank which has a capacity of 2500 mAhs we can have this project up and running for almost a day. Now let’s go to the
computer to see the software side of the project. Now let’s see the code
of the project. In order to better understand how this
code works please watch our previous tutorials on how to use an SD card module, this simple datalogger tutorial, and the GPS shield tutorial. At first we initialize the SD card module, and then we create a file in order to write data in it. Then we write a line in that file in order the file to be recognised by GPS visualizer. The we check if we have a GPS signal fix. If so every
five seconds we get date, time, and the coordinates of our
position from the GPS module. We then create an entry from all this data and we save it to the file. The code is not very difficult but an
understanding of how SD cards and GPS modules work is required. As always you can find the of the project in the description of the video. That’s today’s project. A very easy to build
GPS data logger using a GPS shield. Now that we have learned how to use the GPS shield we can move on and add Bluetooth
capabilities to the project and to find ways to decrease the power consumption Post any ideas that you may have in the
comments section below. thank you very much for watching, press
like if you like the video and see you next week!

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