XBee PWM

4pyros

Well-Known Member

Most Helpful Member

• Mar 26, 2013

• #1

Can you use the I/O pins on the XBee module for PWM? and hard hard would it be?
I would like to drive a RBG Led directory of the module but it has only one biult in PWM output and I need three.

 

magvitron

Active Member

• Mar 26, 2013

• #2

use the other IO pins for PWM.

 

4pyros

Well-Known Member

Most Helpful Member

• Mar 26, 2013

• #3

magvitron said:

use the other IO pins for PWM.

Click to expand...

And how hard would that be?

 

jpanhalt

Well-Known Member

Most Helpful Member

• Mar 26, 2013

• #4

Are you talking about transmitting a PWM signal, which is essentially analog, to an XBee and using that received signal as PWM?

John

 

4pyros

Well-Known Member

Most Helpful Member

• Mar 26, 2013

• #5

jpanhalt said:

Are you talking about transmitting a PWM signal, which is essentially analog, to an XBee and using that received signal as PWM?

John

Click to expand...

Well I dont think it needs to be a PWM signal transmited just maybe a value to make a color on the RGB LED change
using a XBee.

 

jpanhalt

Well-Known Member

Most Helpful Member

• Mar 26, 2013

• #6

Transmitting a value to be used to determine the PWM duty cycle is fine, say with the ccp/pwm module. Transmitting a PWM signal thinking the timing will be faithfully reproduced is not.

John

 

4pyros

Well-Known Member

Most Helpful Member

• Mar 26, 2013

• #7

"ccp/pwm module" ? new to all this, whats that?
Timing can be random trying to simulate pyro strobes

 

jpanhalt

Well-Known Member

Most Helpful Member

• Mar 26, 2013

• #8

If you don't really care about faithful reproduction of the pulse widths, then I don't see a problem. As for the "compare/capture/PWM " module, check out the 16F628 data sheet, page 57 (Chapter 9.0). You will see what I mean about setting the duty cycle numerically. That module is very common in PIC chips.

John

 

4pyros

Well-Known Member

Most Helpful Member

• Mar 26, 2013

• #9

TX I will look at that.