Arduino & xbee tutorial - transmit from seperate arduino wirelessly to pc or mac

Something i found difficult to begin with, as there were not that many tutorials.
This is a quick example including code to get an arduino with xbee shield, talking to a separate arduino - atmel board, connected to usb.

I use a potentiometer as a way of verifying the code is working and that it is correctly transmitting.

sorry about the audio - i took this with my g2

this is the code without the extra bits not needed in the tutorial (shortened)

int ledPin = 0; // select the pin for the analog port 0
int val = 0; // variable to store value coming from sensor

void setup() {
Serial.begin(2400);
}
void loop() {
val = analogRead(ledPin); // read value from sensor

sendValue (val);
delay(100); // stop the program for some time
}
void sendValue (int val){ //new function
Serial.print(val); //print value to xbee (serial port)
Serial.print(" "); //print a space so we can see
}

Category:

Howto & Style

Tags:

• arduino
• xbee
• wireless
• communication
• shield
• libelium

[cbizzyr]

Hey...this is a super nice video...I am noob to arduino and wanted to build something like this. But I want to control 2 separate servos with 2 separate pots wireless. Wht do I need to buy as far as a basic setup? Any information would be helpful. Thanks

Charles

[roboteernat]

@cbizzyr Can i ask, is it 2 servos and pots seperate from each other, ie 4 clusters of parts? or is it just to have 2 sevos on one xbee and 2 pots on another xbee?

[inspiredStudent]

how do you wire it without a shield?

[roboteernat]

@inspiredStudent sorry for not replying sooner, the basic connections would be power to the xbee and connecting the transmit and recieve pin together, i will respond with another vdeo in next few days.

[mcgyverbrown]

thank you!! but what do you do if you want to send more than one analog value? what's the code like?

[roboteernat]

@mcgyverbrown thanks, to send more than one analogue value in this example, you would just need to insert a readadc command, and then add the second memory name in the send value subroutine

int ledpin2 = 0;

int val2 = 0;

val2 = analogRead(ledPin2); // read value from sensor

void sendValue (int val, val2){ //new function

Serial.print(val); //print value to xbee (serial port)

Serial.print(val2);

as example additional lines

[cbizzyr]

@roboteernat Hey thanks for the reply... What I am basically tryin to do is replace my RC trans./receiver for a arduino setup. So I need to pans to control speed and steering connected to a transmitter type device, Im guessing a Xbee and Arduino/Nano?, then I need a reciever(Xbee+Arduino?) thats hooked up to the 2 servos. Let me know your thoughts. Thanks

Charles

[Tuttipazzixpizzi]

wich program did you use to setup xbee with mac?

[roboteernat]

@bluemagictube

thanks! let me know how your project goes. If you need any help, let me know.

Nat

[bluemagictube]

It is awesome that you took the time to do this thank you! I am working on something similar and will post the tutorial as well .