ZMTrigger
About
/usr/bin/zmtrigger.pl is an optional perl script for zoneminder. See the script for a brief description. One way it can be used is to overlay text information from an outside source (say a temperature sensor) onto the video feed.
Configuration
Enable it first, by going into options, config, and clicking Enable Triggers.
Then # service restart zoneminder
Verify it is running with ps auxw | grep zmtrigger
Overlaying Text Data onto a Video Feed
After you have verified the script is running, test it is working.
Choose a monitor, say monitor 1, then add %Q to the monitors timestamp section.
The monitor must be in either modect, mocord, or nodect mode.
Open the video feed for monitor 1.
Then type in another terminal
telnet ipaddress 6082
in the telnet session type the following
3|show||||testingOSD
then press return.
Refer to Documentation for what this command means.
If done correctly, you should immediately see testingOSD in place of the %Q you put in the timestamps section.
For more examples of how to use ZMTrigger see the forums.
Example I2c Sensor OSD
Here is a script of connecting to an ipaddress that serves a value from a sensor. I imagine It would be faster to use something other than wget, but this is simple and works quickly as a test.
- !/bin/bash
counter=1
while [$counter -le 10] do PRESSURE=`wget ipaddress -q -O -` echo "1|show||||$PRESSURE" | telnet ipaddress 6802 sleep 4
- ((counter++))
done
