One other common thing between all the failed motes is that as I said
they've been carried by humans, and here in the place that I live, the
outside temperature is usually between -20 to -30 or even -40 (unbelievable,
I know LOL) and the people are usually outside for at least 15 or 20 minutes
per
Hi Paul,
I tested this case with some help, but apparently this is not the reason for
failure. I took one new mote out of the pack and a broken one. The broken
one could xmit the packet at most over 20 cm with antenna, but if you would
detach the whole antenna (with MMCX connector) from the
Mohammad,
Yes, I believe the problem is with the actual connector that is MMCX
adapter soldered to the board, i've had problems with them coming
completely off the board and taking the PCB lines with them. I would
first try re-soldering that piece first. If this doesn't work, then an
Thanks again, actually I have a software background and I'm not very good in
this soldering thing, especially with this small board and limited tools we
have in our lab. I'll try these ways and I'll tell you what happens.
Mohammad
2009/12/23 Paul Johnson oewyn...@gmail.com
Mohammad,
Yes, I
Hi All
We have run a project using micaz modules. In this project there are 8 nodes
which are fixed in a certain locations and 40 nodes which are carried by
different people (some of these motes are in XBow boxes and some other are
just in small pouches). There are 3 motes which are used as base
Mohammad,
One thing you may want to check out is the antenna connection to the
micaz board. The board-mounted connector can be pretty fragile and can
be easily broken off if the antenna catches on anything, or you attempt
to remove the antenna by pulling at an angle. What I would do is try
Thanks Paul, you're right, most likely the problem is with the antenna. But
the point is that as you know for Micaz, the antenna is a 2.4 ghz pcb
antenna! how can I re-solder it? by now I've cut the antenna of one of the
motes totally and re-soldered it, but it didn't work and also I resolder
