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June 22, 2011
about 4 years ago
I added timestamp support to OpenLog because I needed it for my own project. If need one, check the codes from here: http://antibore.wordpress.com/2013/09/13/timestamp-support-for-openlog/
about 5 years ago
I’m slowly starting to think that this module is a piece of crap. I modified my energy monitor (http://antibore.wordpress.com/2012/03/05/monitoring-electricity-usage-at-home/) to use RN-XV instead of XBee. Initially I thought the setup is working fine and changes required to code were very minor and no hardware modifications needed.
However I noticed that always after ~10 hours the module will freeze and stop accepting data. I tried to remedy this by issuing reboot command every hour or so, but that didn’t really help much.
As a last thing I modified the hardware so that RN-XV reset pin will be pulled low to reset it every hour. This seemed to work, but now after ~26 hours the module was frozen again. This time it’s a little different though, all three lights are in pattern (1 on, 2 on, 3 on, then all off again and start from the beginning). Manual does not tell pretty much anything about the leds.
Curiously, every time the module gets frozen, it’s still sending out something to the server. I use mac mini as a server and after the module freezes, mini starts to reboot because of kernel panics. The rebooting stops when I cut the power from the module. If I’d have time I’d like to investigate this with Wireshark and try to find the offending packets. Another thing is how the hell some network packet can crash mature kernel code. Reminds me of bad old Windows ‘95 times.
Suggestions are welcome is someone has any. Last thing that I can try is to rig the hardware to cut the power to the module periodically or just give up with this and change the module.
about 6 years ago
I found this excellent reference sheet about pinout, only to realize few agonizing moments later that in sparkfun’s cable, colors are in opposite order. I updated the sheet for sparkfun’s cable, if you like, you can download it here
about 6 years ago
No public wish lists :(
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