Getting mobile data from Arduino

Are you looking to send some data from Arduino to a app running on a mobile phone?

You would need an Arduino Yun or an Arduino Leonardo that can connect to the internet. Then its a matter of using any of the web API to get the data over to the mobile app. (MQTT, REST, Tembo and so many other IOT platforms)

If you explain more on what you want to do, some one here can provide more input.

Thank you Mohan. My project deals with reading voltage from a 9v Battery into an Android App. As you can see i'm a novice. All I have heard is that the Arduino is the best solution for a novice getting into programmable electronics. Therefore, if anyone can actually help me with the parts I need, (and maybe some instructions) little by little, I will figure out how to make it work. Of course, with the resources available on element 14.

Again, thank you Mohan for responding.

Damion,

               first of all, assuming the voltage you want to measure is DC (0-9 volt) then you need a voltage divider to reduce the input range to the Arduino to 0 - 5 volt assuming the Arduino is powered from 5 volt.

Once you have the Arduino coded to read the input voltage you need to connect to the internet, for that you need either a wired LAN connection or a WIFI module.  The wired connection is probably the cheapest and easiest for a beginner.

Then you need an Android app on your phone, I suggest you have a look at NETIO,  Google it and you'll get to the web page for this app (NETIO).

I would suggest you do this in stages.  First get your Arduino sending the required data to the serial monitor on your PC.  Secondly, if your are using an Ethernet board or shield look up the examples for the Ethernet applications on the Arduino website.  Also on Element 14 look up Peter Oakes tutorials, Peter covers, in easy stages, getting data from your Arduino to a web page.

Finally when you have that working you have a good base to use NETIO to send data to your phone.

What you want to do  is not trivial but can most certainly be done but it is best learnt in steps.  The GPS device you referred is entirely unsuitable.

Bob

Thank you ver much for responding bobcroft. I will certainly heed your suggestions. What if I want the Arduino to be mobile and send data to my phone, is that a possibility at all? I look at how say a viper alarm system can relay information to your phone from its module in the car. How can I achieve something similar, by having the Arduino being mobile and sending me data wherever I am in the US?

Also, can a potentiometer act as the voltage divider here?

Also, can a potentiometer act as the voltage divider here?