Go Down

Topic: Using Xbee PRO without an adapter board??? (Read 1 time) previous topic - next topic

nathanas

Mar 10, 2011, 11:47 pm Last Edit: Mar 10, 2011, 11:57 pm by nathanas Reason: 1
Is it possible to connect to my arduino the Xbee PRO module and follow a schematic or something to make the proper connections without buying an adapter board?
I made a mistake and I got an adapter board like this one: http://www.mindkits.co.nz/store/components-ics-breakout-boards/pcb-boards/breakout-board-for-xbee-module

But as i can see all of you ise  the adapter board which includes capacitors and other electronics. I need a schematic to make this adapter myself.
Is this possible?
Can someone help me?
I just connect it to RXD, TXD, GND and 3.3V of arduino???

I've found a document in this link which is a guide to make a board yourself. But it doesn;t seem right. The guy uses just some resistors and a regulator but no capacitors...
http://www.sparkfun.com/products/8276
Please help!

mowcius

Take a look at the schematic of the adafruit XBee board - buy those components and fit it together yourself :D

You really need capacitors to remove noise etc.

nathanas

Can you please send me a link of this so I don't find by mistake something else and its not good enough...

I just tried connecting RXD to TXD and vice versa. Also GND of the XBEE to GND of Arduino and just  made a last connection from arduino 3.3V to 3.3 of Xbee and its working but I tried it inside my house.
Maybe there will be a problem in long distance communication.
I need something to make the most of the XBEE PRO module! I am sure some of you use the XBEEs with no adapter board fine.
Please provide some information with us.

mowcius

You can use the XBee without a level shifter but although the inputs are 5V tolerant, they are not designed to be constantly subjected to 5V signal levels and it can cause other issues.

Well you could either buy one of these kits or the files are here

nathanas

I've read some articles about some people that made a long distance connection with Xbees. The distance has been 25miles. It sounds a lot.
I tested my connection and its working for about 50-60 meters.
I have this two XBees :  http://uk.farnell.com/jsp/search/productdetail.jsp?CMP=i-ddd7-00001003&sku=1751798

I used my arduino to power up the xbee module so i think it only gives the xbee 50mA. But tomorrow i will try another external dc regulator for 3.3V it can work with more current. Maybe this helps.
But the other thing is the noise. Which i cannot get rid of and I dont think that the adapter boards do nothing good about this issue.

mowcius

Quote
The distance has been 25miles. It sounds a lot.

The new XBee Pro ZB modules will do 25 miles LOS if you have suitable antennas (directional SMA antennas)

Quote

I used my arduino to power up the xbee module so i think it only gives the xbee 50mA. But tomorrow i will try another external dc regulator for 3.3V it can work with more current. Maybe this helps.

That will help but like I said, you should have a proper circuit.

nathanas

Can you please provide some more information?
The XBee modules do not provide enough information...

mowcius

Read what I said above and follow the links I provided.

Digi provides plenty of information about the XBee modules - just takes a bit of practice to learn how to decifer it all.

Go Up