Comments on: Watchport/T Temperature sensor on Linux

By: Buy Backlinks

Buy Backlinks — Wed, 03 Nov 2010 14:19:19 +0000

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By: Robnhood

Robnhood — Tue, 07 Sep 2010 15:45:04 +0000

I didn’t really need to log to a file or schedule it. I basically just wanted to create a nagios checks. I used the script above, and modified it to create nagios scripts for checking temperature & humidity, and it really didn’t take much.

Basically, I made the following modifications

-check permissions on /dev/ttyUSB0, since this seemed to be an issue on my system

If [ -w "/dev/ttyUSB0"]…then….fi

-check to see if the script was already running, and wait until the previous check completed.

SERVICE=`ps ax | grep -v grep | grep $t_USBport`
while [ "$SERVICE" ]
do
sleep
done

-check to see if output temperature or humidity was within a range.

if test $t_temperature -gt $HWARN -o $t_temperature -lt $LWARN
then
if test $t_temperature -gt $HCRIT -o $t_temperature -lt $LCRIT

By: Ernst

Ernst — Mon, 24 May 2010 15:07:45 +0000

Works great but in the code above all the instances of ‘>’ should be replaced by ‘>’. Somehow your text got mangled when you posted it.

I also had to compile the io_ti.ko module to get usbserial to recognize my Watchport/H.

And ofcourse a

while true
do
.
sleep 60
done

around your code and starting it in de background:

./get-data.sh &

will log the temperature every minute.

Thanks!