Long Distance Communication

Using Arduino Project Guidance
1

Hello,

I recently worked on a project with two Arduinos that communicated using NRF24L01 transceivers. They don't have a very long distance range, though. I was wondering, is there any way to get two Arduinos to communicate for an indefinite amount of distance (here on Earth, that is)? Would I have to use bluetooth, or is there a cell phone shield I could use, or what? Ideally I'd like to reach the point where I have two Arduinos on complete opposite sides of our globe communicating with each other.

2

The maximum 100m range eliminates Bluetooth.

Pick your poison...

http://resfree.org/2011/02/20/arduino-chip-does-morse-code-at-300-wpm/

Queries to get you started...
https://www.google.com/search?q=arduino%20short%20wave
https://www.google.com/search?q=arduino+satellite

3

Arduino to PC to internet to PC to Arduino. For the PC to Arduino ..................

Mark

4

http://forum.arduino.cc/index.php?topic=171404.0

http://forum.arduino.cc/index.php?topic=171746.0

  • Every 6 dBm receiver sensitivity gain will be double the distance.
  • Every 6 dBi antenna gain will be double the distance
  • Every 6 dBm Transmitter power gain will be double the distance.
  • Base on Friis Transmission Equation, for sub Ghz chipset, if we select 300 Mhz v.s 900 Mhz band, the distance will be 3 times more. same thing if we select 300 Mhz v.s. 2400 Mhz, the distance will be 8 times more.
5

Hi,
If you are really talking "anywhere on the Earth" then the possibilities are limited. You need some intermediate system. Telephone system (SMS) , Internet (TCP/IP or UDP) .

Radio is intermittent at short wave 'bounce' communication. Satellites have limited field of view.

6

Thank you everyone for all your ideas and sources. I've begun researching them, trying to determine which one is the best path for me to go down. I'll be sure to come back if I have questions (which I indubitably will!).

7

Last year i tried the code for the morse decoder. It Worked Well. But I Made A Mistake When Integrating It with Walkie Talkies. I Found My Mistake Months After Giving up And Thinking it Didnt Work.

I Think Its Got Potential and Will Be Trying It Out Again This Winter After Some Other More Important Projects.

8

Why Are You Writing In Camel Case?

9

I´d swear you had a go at me about not using capitals in another post, do you enjoy doing it peterh?

I was writing like that because I was using an annoying tablet the does it and I can´t be bothered to work out how to turn it off as most people wouldn´t even consider it annoying.

10

spruce_m00se:
I was writing like that because I was using an annoying tablet the does it

Nice one........ I did wonder and I'm sure there is a simple solution but, owning an "annoying tablet" myself, I can't say I'm surprised about your answer.

11

I have an annoying tablet too, but luckily it only makes caps automatically
when you start a new line, but that still annoying enough. Android 4.04.

BTW, what is your tablet, so we might better avoid same?

12

I say annoying , but I havent used my pc since i bought it, except for the arduino ide that is.
I,m Using It Now And It Only Started Being "Anooying " On the second line.

Its A samsung Galaxy 7.0 16gb Wifi. I Absolutely Love It, Apart From Its Love Of The Shift Key :slight_smile:

13

You want it to work anywhere? $12/mo for a few short messages. Not much more for 100.

14

I ended up buying two of this shield: RadioShack.com Official Site - America's Technology Store
Do you guys know if it's hackduino-compatible?