XBEE Feasability Question

Lynxmotion Electronics & Software
1

Hi guys,

I’ve been playing with an SSC-32, a Wiport, some microcontrollers and some servos for a couple of years now. I am having a tonne of fun with it all. I now want to take a stab at XBEE’s. I have a couple of questions and then hopefully I will be off to the races again and will make yet another project a success.

  1. The Xbee needs 3.3v for its internal computer, and it has a separate href for the ADC’s. Can the href be 5v? I have 5v encoders I wish to be reading and I need the full 5v signal. I haven’t been able to find a href max value int he documentation.

  2. If I understand how they work right, I can have a paired set of Xbees. One would be connected to a set of encoders through the ADC and would not have a microcontroller. The other would be connected to a microcontroller via serial. Can I then have the microcontroller query the ADC on the remote Xbee and get a 10-bit value back?

I pretty much want to remotely query the 5v encoders so that my microcontroller can then execute its program.

Any input would be great.

Cheers,

2

Maybe another tutorial like this but for the xbee?
lynxmotion.com/images/html/build117.htm

3

Hi,

I have done quite a bit with XBee, unfortunately I have not done anything with the external IO lines. However my assumption is that the IO lines are setup as well for 3.3v and probably do not like 5V. My guess is you may need to do some form for voltage divider circuit to make it work for you.

As I mentioned I have only connected up microcontrollers up to the XBee and used it that way.

Good Luck
Kurt

4

Hi,

I don’t know what i am talking about, but i have found a little piece of board that help me using a gps module with a non compatible controler.

sparkfun.com/products/8745

I hope it can help you…!

Eric Nantel
Qc Canada