XBee 802.15.4 - Communication lost if more than 1 meter

Hello,

I setup 2 Xbees : communication is working fine, but within a limited distance : less than 1 meter.

If the 2 Xbees are more than 1 meter away, communication is stopped.

Any clue ?

Thanks for your help.

Setup is as follow :

  • One “receiver”, connected to a USB PC via a XBee Explorer USB (from Sparkfun). The receiver is listen via hyperterminal.

  • One “transmitter”, connected to a Arduino Pro Mini - 3.3V/8MHz.

XBee VCC ↔ Arduino VCC.

XBee GND ↔ Arduino GND.

XBee DOUT ↔ Arduino RX (pin 0).

XBee DIN ↔ Arduino TX (pin 1).

The following program is uploaded into the Arduino :

void setup()

{

Serial.begin(19200);

}

void loop()

{

Serial.print(‘H’);

delay(1000);

Serial.print(‘L’);

delay(1000);

}

Below is the setup of the receiver :

XB24_15_4_10CD.mxi

FE

0

231

10CD

0

[A]CH=C

[A]ID=192

[A]DH=0

[A]DL=1

[A]MY=0

[A]RR=0

[A]RN=0

[A]MM=0

[A]NT=19

[A]NO=0

[A]CE=1

[A]SC=1FFE

[A]SD=4

[A]A1=0

[A]A2=0

[A]EE=0

[A]NI=

[A]PL=4

[A]CA=2C

[A]SM=0

[A]ST=1388

[A]SP=0

[A]DP=3E8

[A]SO=0

[A]PR=FF

[A]D8=0

[A]D7=1

[A]D6=0

[A]D5=1

[A]D4=0

[A]D3=3

[A]D2=0

[A]D1=0

[A]D0=0

[A]IU=1

[A]IT=1

[A]IC=FF

[A]IR=0

[A]IA=FFFFFFFFFFFFFFFF

[A]T0=FF

[A]T1=FF

[A]T2=FF

[A]T3=FF

[A]T4=FF

[A]T5=FF

[A]T6=FF

[A]T7=FF

[A]P0=1

Below is the setup of transmitter

XB24_15_4_10CD.mxi

FE

0

231

10CD

0

[A]CH=C

[A]ID=192

[A]DH=0

[A]DL=0

[A]MY=1

[A]RR=0

[A]RN=0

[A]MM=0

[A]NT=19

[A]NO=0

[A]CE=0

[A]SC=1FFE

[A]SD=4

[A]A1=0

[A]A2=0

[A]EE=0

[A]NI=

[A]PL=4

[A]CA=2C

[A]SM=0

[A]ST=1388

[A]SP=0

[A]DP=3E8

[A]SO=0

[A]BD=4

[A]RO=3

[A]AP=0

[A]PR=FF

[A]D8=0

[A]D7=1

[A]D6=0

[A]D5=1

[A]D4=0

[A]D3=5

[A]D2=0

[A]D1=0

[A]D0=0

[A]IU=0

[A]IT=1

[A]IC=0

[A]IR=0

[A]IA=FFFF

[A]T0=FF

[A]T1=FF

[A]T2=FF

[A]T3=FF

[A]T4=FF

[A]T5=FF

[A]T6=FF

[A]T7=FF

[A]P0=1

[A]P1=0

[A]PT=FF

[A]RP=28

[A]CT=64

[A]GT=3E8

[A]CC=2B

tell us about

same channel

antennas in use

proximity to a busy WiFi system’s antenna and what WiFi channel

Hi,

Thank’s for asking these questions.

Just realized that I ordered a Xbee module w/ U.FL connector. Then antenna is missing…

I’ll order new Xbees, w/ chip antenna.

And to continue to use the current ones, I’ll order as well as :

  • Interface Cable RP-SMA to U.FL

  • 2.4GHz Duck Antenna RP-SMA.

Mersing

You can find an itty bitty socket from some connector and press it onto the u.fl temporarily. with a few inches of wire. I did so.

How is your board?

I found one problem.

I think that two xbee doesn’t talk. because they can not find each other. this should be done by DH,DL,MY. but you didn’t set it.

Only my thought, how about you?