best gsm and gps modules for arduino

okay Patent? nice good luck!!

okay Patent? nice good luck!!

Ajay Bhargav

Yes, only the idea.
Thank you

okay Patent? nice good luck!!

Ajay Bhargav

I was using latitude and longitude values in my program. I am using TINY GPS library in arduino uno.

How many digits after the decimal point should I take to get good values?

This is because I need to define a set of co-ordinates (lat and long) in my program, and have to match these defined values with the current values at that specific location.

I will also be using different power supplies for each module, so that 3.3v devices are'nt damaged if they were powered by arduino
Will it lead to any problem?

bobdxcool

It could.
Having different power supplies will not help.

I think the best idea is to use the RS232 connections you already have.

Supply 5 volt power to your RS232 adapter.
Confirm that the voltage on R1 out and T1 in is less than 5 volts.

Connect R1 out to the RX pin of the Arduino
Connect T1 in to the TX pin of the Arduino.

Connect a PC to the 9 way socket on the adapter, and write a simple test program
to send and receive from the Arduino to the PC.
Let us know what happens.

ExperimenterUK

I was using latitude and longitude values in my program. I am using TINY GPS library in arduino uno.

How many digits after the decimal point should I take to get good values?

This is because I need to define a set of co-ordinates (lat and long) in my program, and have to match these defined values with the current values at that specific location.