26 Oct
2013
26 Oct
'13
7:53 p.m.
Hi, the Xbees are XB24-BCIT-004, which are Series 2, chip antenna, radio data rate
250Kbps.
The path length is about 2'6"
I'd suspected that it was something with packet collision/overlap - I'll have a
poke and see
if there's anything to change with RTT. It's not critical, I got the Xbees for a
greenhouse
temperature sensor and just "repurposed" them to remind myself how to do serial
comms.
I haven't used the XBIB; just cheapie USB boards.
I've got both the RasPi and a BeagleBone Black, though I've used the Pi more.
(I've got 2 of model a
sitting waiting for me to solder up the TNCpi kits, which is what prompted me to join this
group.)
The RasPi is (slightly) cheaper and a lot better at multimedia - XBMC and the like. The
BBblack seems
to have more resilient, and just more, GPIO. The BBblack has a much nicer hard real time
system, the
Programmable Reatime Units (PRU). The LinuxCNC guys love it. The RasPi seems to have a
much larger
user base, and lots more accessories. For example, the Cooking Hacks "Raspberry Pi to
Arduino shields
connection bridge" which has Xbee socket connecting straight to the RasPi; or the
TNCpi. (I'd love a
TNCbeagle!)
The BBblack has support for "USB gadget" api, so you can program it to act as,
for example, a
USB keyboard, mouse or network dongle.
For talking to an Xbee I'd go for a RasPi, but pretty much for the feeling that the
BBblack was too
good, and the RasPi, model b, has 2 USB sockets.
Bill (M1BKF)