ZMTrigger - Revision history

Burger: /* Notes */

2026-08-24T15:52:45Z

Notes

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	* "Can I have these arduino sketches set off multiple cameras?" Yes. You can edit the Arduino sketch to send more packets, or "link monitors" in Zoneminder. Two approaches (the latter is easier). https://forums.zoneminder.com/viewtopic.php?f=36&t=26794		* "Can I have these arduino sketches set off multiple cameras?" Yes. You can edit the Arduino sketch to send more packets, or "link monitors" in Zoneminder. Two approaches (the latter is easier). https://forums.zoneminder.com/viewtopic.php?f=36&t=26794

			* If using an ethernet or wifi based device, you will want to consider low power modes. For example, on the ENC28J60, it is possible to include https://github.com/UIPEthernet/UIPEthernet/blob/master/utility/Enc28J60Network.cpp (this is a seperate library, from UIPEthernet) and call the Enc28J60Network::powerOff(void) command to save about 2 watts (from 3 watts to 1).

	== See Also ==		== See Also ==

Burger: /* Overlaying Text Data onto a Video Feed */

2026-08-24T15:48:33Z

Overlaying Text Data onto a Video Feed

← Older revision		Revision as of 15:48, 24 August 2026
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	then press return.		then press return.

	Alternatively, you can run a one line command with your choice of program to send a tcp packet. Such as:		Alternatively, you can run a one line command with your choice of program to send a tcp packet. Such as: [https://forums.zoneminder.com/viewtopic.php?p=140425]
	printf '6\|on\|1\|motion\|\|\|\|\n' \| socat - TCP:127.0.0.1:6802		printf '6\|on\|1\|motion\|\|\|\|\n' \| socat - TCP:127.0.0.1:6802
	~~[https://forums.zoneminder.com/viewtopic.php?p=140425]~~

	Refer to the [https://zoneminder.readthedocs.io/en/stable/userguide/components.html Official Docs] or the zmtrigger.pl script for what this command means. A brief explanation for this is: <pre>MonitorID # \| Show text mode \|\|\|\| text to put in.</pre>		Refer to the [https://zoneminder.readthedocs.io/en/stable/userguide/components.html Official Docs] or the zmtrigger.pl script for what this command means. A brief explanation for this is: <pre>MonitorID # \| Show text mode \|\|\|\| text to put in.</pre>

Burger: /* Overlaying Text Data onto a Video Feed */

2026-08-24T15:48:18Z

Overlaying Text Data onto a Video Feed

← Older revision		Revision as of 15:48, 24 August 2026
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	Alternatively, you can run a one line command with your choice of program to send a tcp packet. Such as:		Alternatively, you can run a one line command with your choice of program to send a tcp packet. Such as:
	printf '6\|on\|1\|motion\|\|\|\|\n' \| socat - TCP:127.0.0.1:6802		printf '6\|on\|1\|motion\|\|\|\|\n' \| socat - TCP:127.0.0.1:6802
	https://forums.zoneminder.com/viewtopic.php?p=140425~~&hilit=motion#p140425~~		[https://forums.zoneminder.com/viewtopic.php?p=140425]

	Refer to the [https://zoneminder.readthedocs.io/en/stable/userguide/components.html Official Docs] or the zmtrigger.pl script for what this command means. A brief explanation for this is: <pre>MonitorID # \| Show text mode \|\|\|\| text to put in.</pre>		Refer to the [https://zoneminder.readthedocs.io/en/stable/userguide/components.html Official Docs] or the zmtrigger.pl script for what this command means. A brief explanation for this is: <pre>MonitorID # \| Show text mode \|\|\|\| text to put in.</pre>

Burger: /* Overlaying Text Data onto a Video Feed */

2026-08-24T15:48:06Z

Overlaying Text Data onto a Video Feed

← Older revision		Revision as of 15:48, 24 August 2026
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	Alternatively, you can run a one line command with your choice of program to send a tcp packet. Such as:		Alternatively, you can run a one line command with your choice of program to send a tcp packet. Such as:
	printf '6\|on\|1\|motion\|\|\|\|\n' \| socat - TCP:127.0.0.1:6802 https://forums.zoneminder.com/viewtopic.php?p=140425&hilit=motion#p140425		printf '6\|on\|1\|motion\|\|\|\|\n' \| socat - TCP:127.0.0.1:6802
			https://forums.zoneminder.com/viewtopic.php?p=140425&hilit=motion#p140425

	Refer to the [https://zoneminder.readthedocs.io/en/stable/userguide/components.html Official Docs] or the zmtrigger.pl script for what this command means. A brief explanation for this is: <pre>MonitorID # \| Show text mode \|\|\|\| text to put in.</pre>		Refer to the [https://zoneminder.readthedocs.io/en/stable/userguide/components.html Official Docs] or the zmtrigger.pl script for what this command means. A brief explanation for this is: <pre>MonitorID # \| Show text mode \|\|\|\| text to put in.</pre>

Burger: /* Overlaying Text Data onto a Video Feed */

2026-08-24T15:47:59Z

Overlaying Text Data onto a Video Feed

← Older revision		Revision as of 15:47, 24 August 2026
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	then press return.		then press return.

			Alternatively, you can run a one line command with your choice of program to send a tcp packet. Such as:
			printf '6\|on\|1\|motion\|\|\|\|\n' \| socat - TCP:127.0.0.1:6802 https://forums.zoneminder.com/viewtopic.php?p=140425&hilit=motion#p140425

	Refer to the [https://zoneminder.readthedocs.io/en/stable/userguide/components.html Official Docs] or the zmtrigger.pl script for what this command means. A brief explanation for this is: <pre>MonitorID # \| Show text mode \|\|\|\| text to put in.</pre>		Refer to the [https://zoneminder.readthedocs.io/en/stable/userguide/components.html Official Docs] or the zmtrigger.pl script for what this command means. A brief explanation for this is: <pre>MonitorID # \| Show text mode \|\|\|\| text to put in.</pre>

Burger: /* Types of Controllers */

2026-08-24T15:45:55Z

Types of Controllers

← Older revision		Revision as of 15:45, 24 August 2026
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	====Types of Controllers====		====Types of Controllers====
	[[File:ArduinoUno.jpg\|thumb\|right\|upright=0.5\|alt=Uno\|\|Arduino Uno ~~DIP~~. Note that you may get lower power usage with other options such as a Nano or Pro Micro.]]		[[File:ArduinoUno.jpg\|thumb\|right\|upright=0.5\|alt=Uno\|\|Arduino Uno. Note that you may get lower power usage with other options such as a Nano or Pro Micro.]]
	This is up to you. If you have a wired ethernet connection available for the external sensor, then an [[Arduino]] Uno is a good choice. If you don't want to run ethernet, then an ESP8266 or Arduino w/wifi should do. An Arduino Uno will require a separate ethernet board. You can also connect an Arduino via USB, if the computer is within 15 feet.		This is up to you. If you have a wired ethernet connection available for the external sensor, then an [[Arduino]] Uno is a good choice. If you don't want to run ethernet, then an ESP8266 or Arduino w/wifi should do. An Arduino Uno will require a separate ethernet board. You can also connect an Arduino via USB, if the computer is within 15 feet.

Burger: /* Types of Controllers */

2026-08-24T15:45:41Z

Types of Controllers

← Older revision		Revision as of 15:45, 24 August 2026
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	====Types of Controllers====		====Types of Controllers====
	[[File:ArduinoUno.jpg\|thumb\|right\|upright=0.5\|alt=Uno\|\|Arduino Uno DIP]]		[[File:ArduinoUno.jpg\|thumb\|right\|upright=0.5\|alt=Uno\|\|Arduino Uno DIP. Note that you may get lower power usage with other options such as a Nano or Pro Micro.]]
	This is up to you. If you have a wired ethernet connection available for the external sensor, then an [[Arduino]] Uno is a good choice. If you don't want to run ethernet, then an ESP8266 or Arduino w/wifi should do. An Arduino Uno will require a separate ethernet board. You can also connect an Arduino via USB, if the computer is within 15 feet.		This is up to you. If you have a wired ethernet connection available for the external sensor, then an [[Arduino]] Uno is a good choice. If you don't want to run ethernet, then an ESP8266 or Arduino w/wifi should do. An Arduino Uno will require a separate ethernet board. You can also connect an Arduino via USB, if the computer is within 15 feet.

Burger at 15:44, 24 August 2026

2026-08-24T15:44:08Z

← Older revision		Revision as of 15:44, 24 August 2026
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	/usr/bin/zmtrigger.pl (debian location) is an optional program for Zoneminder that listens on the network for commands. Read the perl script for more information. It is a telnet server.		/usr/bin/zmtrigger.pl (debian location) is an optional program for Zoneminder that listens on the network for commands. Read the perl script for more information. It is a telnet or TCP server.

	It can be used in different ways.		It can be used in different ways.

Burger at 15:43, 24 August 2026

2026-08-24T15:43:39Z

← Older revision		Revision as of 15:43, 24 August 2026
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	It can be used in different ways.		It can be used in different ways.

	'''1)''' it can be used is to overlay text information (e.g. temperature sensor) onto the video feed.		'''1)''' It can be used is to overlay text information (e.g. temperature sensor) onto the video feed.

	'''2)''' It can also be used as an external trigger / alarm source for cameras. By using an external alarm, you can avoid some of the problems inherent in ZM software modect - false alarms, and CPU usage. False alarms are commonly caused when the video feed has an ambient change come across it, e.g. weather events, wildlife, or the transition from daylight to night ir filter.		'''2)''' It can also be used as an external trigger / alarm source for cameras. By using an external alarm, you can avoid some of the problems inherent in ZM software modect - false alarms, and CPU usage. False alarms are commonly caused when the video feed has an ambient change come across it, e.g. weather events, wildlife, or the transition from daylight to night ir filter.

	'''3)''' You can monitor which alarms are active or not at a given time. ZMTrigger reports when alarms are active, and when they are closed. This data can be queried by external programs.		'''3)''' You can monitor which alarms are active or not at a given time. ZMTrigger reports when alarms are active, and when they are closed. This data can be queried by external programs.

			'''4)''' It can be used as a standalone alarm system. In this scenario, you would not have cameras, and instead only have devices that send TCP packets to the ZMTrigger daemon. For example, you might install a motion sensor using [[Arduino]] and then have it report to the ZM server.

	Note that if you have a house, or single breaker, you might want to consider using [[X10]] for Zoneminder. This will save you the need for ethernet wiring, or setting up wifi.		Note that if you have a house, or single breaker, you might want to consider using [[X10]] for Zoneminder. This will save you the need for ethernet wiring, or setting up wifi.

Burger: /* Overlaying Text Data onto a Video Feed */

2026-01-21T03:46:20Z

Overlaying Text Data onto a Video Feed

← Older revision		Revision as of 03:46, 21 January 2026
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	Refer to [https://zoneminder.readthedocs.io/en/stable/userguide/components.html ~~The~~ Official ~~Documentation~~] or the zmtrigger.pl script for what this command means. A brief explanation for this is: <pre>MonitorID # \| Show text mode \|\|\|\| text to put in.</pre>		Refer to the [https://zoneminder.readthedocs.io/en/stable/userguide/components.html Official Docs] or the zmtrigger.pl script for what this command means. A brief explanation for this is: <pre>MonitorID # \| Show text mode \|\|\|\| text to put in.</pre>

	You should immediately see testingOSD in place of the %Q you put in the timestamps section.		You should immediately see testingOSD in place of the %Q you put in the timestamps section.