MattPoat
Posts: 45
Joined: Tue Jul 17, 2012 9:25 pm
Location: Towcester, Northants
Contact: Website

Slice of Pi + XBee Pro S2

Wed Aug 01, 2012 4:24 pm

Hey,

I have a Pi, a slice of pi breakout board, a couple of XBee Pro S2 RF transmitters/receivers and some Arduino UNO's.

I've read that the GPIO pins have a max current draw of 40mA on 3.3v pin which is too low to drive the Xbee Pro S2 so I will need to sort out some alternative power if i'm gonna use them with the Pi. Anyone have any experience with any of these parts that could offer advice on how I should proceed?

Thanks

Matthew
"I'm selling these fine leather jackets"

jnd
Posts: 11
Joined: Thu Aug 02, 2012 12:32 am

Re: Slice of Pi + XBee Pro S2

Thu Aug 02, 2012 12:35 am

How much power does the Xbee need? It is 3.3 V device, right? You could probably just add some 5 -> 3.3 V regulator.

MattPoat
Posts: 45
Joined: Tue Jul 17, 2012 9:25 pm
Location: Towcester, Northants
Contact: Website

Re: Slice of Pi + XBee Pro S2

Thu Aug 02, 2012 9:09 am

These are the XBee Pro S2 Power Requirements taken from the datasheet:

Supply Voltage
3.0 - 3.4 V

Operating Current (Transmit, max output power)
295mA (@3.3 V)
170mA (@3.3 V) international variant

Operating Current (Receive)
45 mA (@3.3 V)

Idle Current (Receiver off)
15mA

Power-down Current
3.5 uA typical @ 25oC

I guess I will need 295mA....?

Matthew
"I'm selling these fine leather jackets"


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