Hi all, I ran into a very weird problem recently. I was using Crossbow MoteWorks framework for writing a program and installing it on some MicaZ motes. The program was sensing some data from MTS310 sensor board and report them to the base station. After writing the code, I picked some new MicaZ motes and installed the program on them, everything was working fine. After one day I had to reset the motes to change their battery, when I turned them on again, most of them (around 80%) couldn't join the network alone, i.e. if I was just turning that mote on alone with server, the mote couldn't find the server, even though they were right next to each other! But when I was picking another fresh new mote and installing my program on it and putting it between the old mote and the server, the old mote could create a two-hop network and send it's data to the server via the new mote! I checked the old motes with XMTS310 program (the one which ships with MoteWorks framework), but the old motes were just collecting the data and sending the packets, but server never could receive those packets from old motes (probably because the wireless transmission power of the old motes were too low that server couldn't receive them!)
Does any one have any idea or any clue that what might be the source of this problem? I really appreciate any response. Thanks in advance, Mohammad -- Mohammad S. Hashemian Research Scholar/DISCUS Lab Department of Computer Science 254.2 Thorvaldson Building University of Saskatchewan (306)966-1947
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