Arduino XBEE RF communications without internet access -- 2

Hello I have worked on RF tranceivers and can help you,,,We can discuss any details in chat,,,,,,,,,,

i am Assistant Technical manager of Sublime Enterprise . i have 5 year experience to work on microcontroller, PLC ,arduino e.t.c , i also design lots of industrial product . Design Pakistan's 1st RFID debit card system for amusement Parks. i can complete your project as you want...

hello, I already work on the industrial map as map Arduino,raspberry, I'm an engineer on electronic systems and embedded, and I can help you on your project

Hi there! My name is Keith and I am a professional engineer living in Tennessee, USA. I graduated from Vanderbilt University with a mechanical engineering degree in 2012. Previously having worked in the aerospace industry, I am now a full time contractor and work on a wide variety of product designs for personal customers, Kickstarter businesses, and entrepreneurs. Feel free to take a look at my profile and portfolio, I think you will be pleased with my qualifications! I am glad to talk about the details if you'd like to message me here on Freelancer. I look forward to the possibility of working on your project and thank you for your consideration. - Keith A.

I have experience working with XBEE. I used XBEE pro series 1 in my last project. shortly, I used 3 XBEE and make each XBEE as a station, I set two XBEE as a router and 1 XBEE as a coordinator. I connect All of that using Arduino Mega, because arduino mega have 4 pin of Tx, Rx. and then I also use XBEE for my leader and my follower robot. My purpose on that project are to control follower robot movements from coordinator station. First I set follower and leader robot to brodcast signal and sensor data to each station, then coordinator station will calculate distance between follower and leader. after that coordinator send back control data to follower robot to maintain the formation against the leader robot. The most important things when you use XBEE is the XCTU Software. It is used for configuring XBEE (address that XBEE will send the data), you can google it to get it. XBEE only uses Tx, Rx pin, and 3.3 DC voltage to operate, you can built your own shield or you can buy XBEE shield. and Then for Logging data to SD card, I suggest you to Data logging Shield, it will help you much, when logging data. I also use it when I made Tele-protection system using SMS gateway. And the last if you want to set XBEE on you UAV, you have to make sure what type XBEE you will choose. Because it type of XBEE will determine your communication range. ^-^