Re: [PLUG] Ambient light screen adjustment
Thank you, that looks like what I am looking for. Now to get it installed and tried. On Sat, May 2, 2020 at 3:57 PM King Beowulf wrote: > On 4/30/20 7:21 PM, Chuck Hast wrote: > > Folks, > > I have a HP Compaq 6300 I am using as a DVR terminal to my DVR which is > > elsewhere on the property. The 6300 just displays the critical camera > > screens. > > > > My issue is that I am trying to figure out how to use the camera on the > > machine > > to detect ambient light and adjust screen brightness. I see a lot about > Win > > 10 > > doing so bidden or not. But do not see much about this in Linux. The > issue > > is > > the screen is so bright at night that it bothers my wife. But we do not > > want to > > turn it off because if we hear something outside the first thing we do is > > look at > > the screen to see what the cameras are seeing. Since the machine is > mounted > > on the wall for viewing there is no keyboard on it and even if there was > > wife > > probably would not try to adjust it. > > > > Any ideas on how to use the on board camera to adjust screen brightness? > > > > These may be of use: > > https://www.linuxlinks.com/clight-webcam-becomes-light-sensor/ > https://sourceforge.net/projects/calise/ > > > ___ > PLUG mailing list > PLUG@pdxlinux.org > http://lists.pdxlinux.org/mailman/listinfo/plug > -- Chuck Hast -- KP4DJT -- I can do all things through Christ which strengtheneth me. Ph 4:13 KJV Todo lo puedo en Cristo que me fortalece. Fil 4:13 RVR1960 ___ PLUG mailing list PLUG@pdxlinux.org http://lists.pdxlinux.org/mailman/listinfo/plug
Re: [PLUG] Ambient light screen adjustment
On 4/30/20 7:21 PM, Chuck Hast wrote: > Folks, > I have a HP Compaq 6300 I am using as a DVR terminal to my DVR which is > elsewhere on the property. The 6300 just displays the critical camera > screens. > > My issue is that I am trying to figure out how to use the camera on the > machine > to detect ambient light and adjust screen brightness. I see a lot about Win > 10 > doing so bidden or not. But do not see much about this in Linux. The issue > is > the screen is so bright at night that it bothers my wife. But we do not > want to > turn it off because if we hear something outside the first thing we do is > look at > the screen to see what the cameras are seeing. Since the machine is mounted > on the wall for viewing there is no keyboard on it and even if there was > wife > probably would not try to adjust it. > > Any ideas on how to use the on board camera to adjust screen brightness? > These may be of use: https://www.linuxlinks.com/clight-webcam-becomes-light-sensor/ https://sourceforge.net/projects/calise/ signature.asc Description: OpenPGP digital signature ___ PLUG mailing list PLUG@pdxlinux.org http://lists.pdxlinux.org/mailman/listinfo/plug
Re: [PLUG] Ambient light screen adjustment
The HP Compaq Pro 6300 has a camera in the top of the bezel. That was my idea that it would use the camera to get the light info. Seems it should be pretty straight forward you look at the pixels get an average of them all and adjust the screen based on preset levels. I am not sure why it would need another sensor using cameras to look at light levels has been done for a long time. A single sensor (pixel) or multiple sensors (camera sensor) are still light detectors. Here is a link to the machine description. https://support.hp.com/us-en/document/c03443420 Here is what is says about the camera: Integrated 2.0 MP webcam (up to 30 frames/sec) 1600x1200 resolution. So all I need to find is something that can take that info and convert it into monitor intensity control. On Fri, May 1, 2020 at 10:44 AM Tomas Kuchta wrote: > If this is a laptop, you could always take a picture with it's camera using > mplayer, then get average brightness using imagemagick or similar instead > of trying to get the light sensor working. > > On Fri, May 1, 2020, 08:39 Tomas Kuchta > wrote: > > > If you can find the light sensor in devices, probably/hopefully USB. It > > could even be exposed in Dbus. You could cludge some daemon together > > checking it every 10sec or so and adjusting the brightness by sending > > messages to the screen via Dbus. > > > > It is the same idea as pressing the brightness keys on your keyboard. > > > > That is if you can find a way to get value off your light sensor. Other > > than that, you would need external light sensor to get the light info. > > > > This is not much of a help > > Tomas > > > > On Fri, May 1, 2020, 07:21 Chuck Hast wrote: > > > >> That is kind of a pita because this screen is in a location where > >> during the early morning and evening, lights are turned on and > >> off. When off we want the screen to drop way down but when > >> on it needs to come back up so it will be visible again. I know > >> it works, I have a laptop that has Mate on it and it does it automagicly > >> I did not even install it. But on this machine I do not even see > >> see the setup for auto adjust. > >> I am going to move it to 20.04 anyhow, and the ambient light > >> auto adjust is quite clearly in 20.04. Maybe with the install the > >> system did not see the hardware to do this auto ambient and > >> just did not install it, not sure. But I know that the HP Compaq > >> 6300 does have the hardware for it as I see windows setup info > >> for dealing with it. > >> > >> > >> On Fri, May 1, 2020 at 12:21 AM wes wrote: > >> > >> > obligatory suggestion that is not what you asked for and you have > >> probably > >> > already considered: > >> > > >> > it would probably be a lot easier to adjust the brightness on a > schedule > >> > rather than based on ambient light. > >> > > >> > -wes > >> > > >> > On Thu, Apr 30, 2020 at 7:24 PM Chuck Hast wrote: > >> > > >> > > Folks, > >> > > I have a HP Compaq 6300 I am using as a DVR terminal to my DVR which > >> is > >> > > elsewhere on the property. The 6300 just displays the critical > camera > >> > > screens. > >> > > > >> > > My issue is that I am trying to figure out how to use the camera on > >> the > >> > > machine > >> > > to detect ambient light and adjust screen brightness. I see a lot > >> about > >> > Win > >> > > 10 > >> > > doing so bidden or not. But do not see much about this in Linux. The > >> > issue > >> > > is > >> > > the screen is so bright at night that it bothers my wife. But we do > >> not > >> > > want to > >> > > turn it off because if we hear something outside the first thing we > >> do is > >> > > look at > >> > > the screen to see what the cameras are seeing. Since the machine is > >> > mounted > >> > > on the wall for viewing there is no keyboard on it and even if there > >> was > >> > > wife > >> > > probably would not try to adjust it. > >> > > > >> > > Any ideas on how to use the on board camera to adjust screen > >> brightness? > >> > > -- > >> > > > >> > > Chuck Hast -- KP4DJT -- > >> > > I can do all things through Christ which strengtheneth me. > >> > > Ph 4:13 KJV > >> > > Todo lo puedo en Cristo que me fortalece. > >> > > Fil 4:13 RVR1960 > >> > > ___ > >> > > PLUG mailing list > >> > > PLUG@pdxlinux.org > >> > > http://lists.pdxlinux.org/mailman/listinfo/plug > >> > > > >> > ___ > >> > PLUG mailing list > >> > PLUG@pdxlinux.org > >> > http://lists.pdxlinux.org/mailman/listinfo/plug > >> > > >> > >> > >> -- > >> > >> Chuck Hast -- KP4DJT -- > >> I can do all things through Christ which strengtheneth me. > >> Ph 4:13 KJV > >> Todo lo puedo en Cristo que me fortalece. > >> Fil 4:13 RVR1960 > >> ___ > >> PLUG mailing list > >> PLUG@pdxlinux.org > >> http://lists.pdxlinux.org/mailman/listinfo/plug > >> > > > ___ > PLUG mailing list >
Re: [PLUG] Ambient light screen adjustment
If this is a laptop, you could always take a picture with it's camera using mplayer, then get average brightness using imagemagick or similar instead of trying to get the light sensor working. On Fri, May 1, 2020, 08:39 Tomas Kuchta wrote: > If you can find the light sensor in devices, probably/hopefully USB. It > could even be exposed in Dbus. You could cludge some daemon together > checking it every 10sec or so and adjusting the brightness by sending > messages to the screen via Dbus. > > It is the same idea as pressing the brightness keys on your keyboard. > > That is if you can find a way to get value off your light sensor. Other > than that, you would need external light sensor to get the light info. > > This is not much of a help > Tomas > > On Fri, May 1, 2020, 07:21 Chuck Hast wrote: > >> That is kind of a pita because this screen is in a location where >> during the early morning and evening, lights are turned on and >> off. When off we want the screen to drop way down but when >> on it needs to come back up so it will be visible again. I know >> it works, I have a laptop that has Mate on it and it does it automagicly >> I did not even install it. But on this machine I do not even see >> see the setup for auto adjust. >> I am going to move it to 20.04 anyhow, and the ambient light >> auto adjust is quite clearly in 20.04. Maybe with the install the >> system did not see the hardware to do this auto ambient and >> just did not install it, not sure. But I know that the HP Compaq >> 6300 does have the hardware for it as I see windows setup info >> for dealing with it. >> >> >> On Fri, May 1, 2020 at 12:21 AM wes wrote: >> >> > obligatory suggestion that is not what you asked for and you have >> probably >> > already considered: >> > >> > it would probably be a lot easier to adjust the brightness on a schedule >> > rather than based on ambient light. >> > >> > -wes >> > >> > On Thu, Apr 30, 2020 at 7:24 PM Chuck Hast wrote: >> > >> > > Folks, >> > > I have a HP Compaq 6300 I am using as a DVR terminal to my DVR which >> is >> > > elsewhere on the property. The 6300 just displays the critical camera >> > > screens. >> > > >> > > My issue is that I am trying to figure out how to use the camera on >> the >> > > machine >> > > to detect ambient light and adjust screen brightness. I see a lot >> about >> > Win >> > > 10 >> > > doing so bidden or not. But do not see much about this in Linux. The >> > issue >> > > is >> > > the screen is so bright at night that it bothers my wife. But we do >> not >> > > want to >> > > turn it off because if we hear something outside the first thing we >> do is >> > > look at >> > > the screen to see what the cameras are seeing. Since the machine is >> > mounted >> > > on the wall for viewing there is no keyboard on it and even if there >> was >> > > wife >> > > probably would not try to adjust it. >> > > >> > > Any ideas on how to use the on board camera to adjust screen >> brightness? >> > > -- >> > > >> > > Chuck Hast -- KP4DJT -- >> > > I can do all things through Christ which strengtheneth me. >> > > Ph 4:13 KJV >> > > Todo lo puedo en Cristo que me fortalece. >> > > Fil 4:13 RVR1960 >> > > ___ >> > > PLUG mailing list >> > > PLUG@pdxlinux.org >> > > http://lists.pdxlinux.org/mailman/listinfo/plug >> > > >> > ___ >> > PLUG mailing list >> > PLUG@pdxlinux.org >> > http://lists.pdxlinux.org/mailman/listinfo/plug >> > >> >> >> -- >> >> Chuck Hast -- KP4DJT -- >> I can do all things through Christ which strengtheneth me. >> Ph 4:13 KJV >> Todo lo puedo en Cristo que me fortalece. >> Fil 4:13 RVR1960 >> ___ >> PLUG mailing list >> PLUG@pdxlinux.org >> http://lists.pdxlinux.org/mailman/listinfo/plug >> > ___ PLUG mailing list PLUG@pdxlinux.org http://lists.pdxlinux.org/mailman/listinfo/plug
Re: [PLUG] Ambient light screen adjustment
If you can find the light sensor in devices, probably/hopefully USB. It could even be exposed in Dbus. You could cludge some daemon together checking it every 10sec or so and adjusting the brightness by sending messages to the screen via Dbus. It is the same idea as pressing the brightness keys on your keyboard. That is if you can find a way to get value off your light sensor. Other than that, you would need external light sensor to get the light info. This is not much of a help Tomas On Fri, May 1, 2020, 07:21 Chuck Hast wrote: > That is kind of a pita because this screen is in a location where > during the early morning and evening, lights are turned on and > off. When off we want the screen to drop way down but when > on it needs to come back up so it will be visible again. I know > it works, I have a laptop that has Mate on it and it does it automagicly > I did not even install it. But on this machine I do not even see > see the setup for auto adjust. > I am going to move it to 20.04 anyhow, and the ambient light > auto adjust is quite clearly in 20.04. Maybe with the install the > system did not see the hardware to do this auto ambient and > just did not install it, not sure. But I know that the HP Compaq > 6300 does have the hardware for it as I see windows setup info > for dealing with it. > > > On Fri, May 1, 2020 at 12:21 AM wes wrote: > > > obligatory suggestion that is not what you asked for and you have > probably > > already considered: > > > > it would probably be a lot easier to adjust the brightness on a schedule > > rather than based on ambient light. > > > > -wes > > > > On Thu, Apr 30, 2020 at 7:24 PM Chuck Hast wrote: > > > > > Folks, > > > I have a HP Compaq 6300 I am using as a DVR terminal to my DVR which is > > > elsewhere on the property. The 6300 just displays the critical camera > > > screens. > > > > > > My issue is that I am trying to figure out how to use the camera on the > > > machine > > > to detect ambient light and adjust screen brightness. I see a lot about > > Win > > > 10 > > > doing so bidden or not. But do not see much about this in Linux. The > > issue > > > is > > > the screen is so bright at night that it bothers my wife. But we do not > > > want to > > > turn it off because if we hear something outside the first thing we do > is > > > look at > > > the screen to see what the cameras are seeing. Since the machine is > > mounted > > > on the wall for viewing there is no keyboard on it and even if there > was > > > wife > > > probably would not try to adjust it. > > > > > > Any ideas on how to use the on board camera to adjust screen > brightness? > > > -- > > > > > > Chuck Hast -- KP4DJT -- > > > I can do all things through Christ which strengtheneth me. > > > Ph 4:13 KJV > > > Todo lo puedo en Cristo que me fortalece. > > > Fil 4:13 RVR1960 > > > ___ > > > PLUG mailing list > > > PLUG@pdxlinux.org > > > http://lists.pdxlinux.org/mailman/listinfo/plug > > > > > ___ > > PLUG mailing list > > PLUG@pdxlinux.org > > http://lists.pdxlinux.org/mailman/listinfo/plug > > > > > -- > > Chuck Hast -- KP4DJT -- > I can do all things through Christ which strengtheneth me. > Ph 4:13 KJV > Todo lo puedo en Cristo que me fortalece. > Fil 4:13 RVR1960 > ___ > PLUG mailing list > PLUG@pdxlinux.org > http://lists.pdxlinux.org/mailman/listinfo/plug > ___ PLUG mailing list PLUG@pdxlinux.org http://lists.pdxlinux.org/mailman/listinfo/plug
Re: [PLUG] Ambient light screen adjustment
That is kind of a pita because this screen is in a location where during the early morning and evening, lights are turned on and off. When off we want the screen to drop way down but when on it needs to come back up so it will be visible again. I know it works, I have a laptop that has Mate on it and it does it automagicly I did not even install it. But on this machine I do not even see see the setup for auto adjust. I am going to move it to 20.04 anyhow, and the ambient light auto adjust is quite clearly in 20.04. Maybe with the install the system did not see the hardware to do this auto ambient and just did not install it, not sure. But I know that the HP Compaq 6300 does have the hardware for it as I see windows setup info for dealing with it. On Fri, May 1, 2020 at 12:21 AM wes wrote: > obligatory suggestion that is not what you asked for and you have probably > already considered: > > it would probably be a lot easier to adjust the brightness on a schedule > rather than based on ambient light. > > -wes > > On Thu, Apr 30, 2020 at 7:24 PM Chuck Hast wrote: > > > Folks, > > I have a HP Compaq 6300 I am using as a DVR terminal to my DVR which is > > elsewhere on the property. The 6300 just displays the critical camera > > screens. > > > > My issue is that I am trying to figure out how to use the camera on the > > machine > > to detect ambient light and adjust screen brightness. I see a lot about > Win > > 10 > > doing so bidden or not. But do not see much about this in Linux. The > issue > > is > > the screen is so bright at night that it bothers my wife. But we do not > > want to > > turn it off because if we hear something outside the first thing we do is > > look at > > the screen to see what the cameras are seeing. Since the machine is > mounted > > on the wall for viewing there is no keyboard on it and even if there was > > wife > > probably would not try to adjust it. > > > > Any ideas on how to use the on board camera to adjust screen brightness? > > -- > > > > Chuck Hast -- KP4DJT -- > > I can do all things through Christ which strengtheneth me. > > Ph 4:13 KJV > > Todo lo puedo en Cristo que me fortalece. > > Fil 4:13 RVR1960 > > ___ > > PLUG mailing list > > PLUG@pdxlinux.org > > http://lists.pdxlinux.org/mailman/listinfo/plug > > > ___ > PLUG mailing list > PLUG@pdxlinux.org > http://lists.pdxlinux.org/mailman/listinfo/plug > -- Chuck Hast -- KP4DJT -- I can do all things through Christ which strengtheneth me. Ph 4:13 KJV Todo lo puedo en Cristo que me fortalece. Fil 4:13 RVR1960 ___ PLUG mailing list PLUG@pdxlinux.org http://lists.pdxlinux.org/mailman/listinfo/plug
Re: [PLUG] Ambient light screen adjustment
obligatory suggestion that is not what you asked for and you have probably already considered: it would probably be a lot easier to adjust the brightness on a schedule rather than based on ambient light. -wes On Thu, Apr 30, 2020 at 7:24 PM Chuck Hast wrote: > Folks, > I have a HP Compaq 6300 I am using as a DVR terminal to my DVR which is > elsewhere on the property. The 6300 just displays the critical camera > screens. > > My issue is that I am trying to figure out how to use the camera on the > machine > to detect ambient light and adjust screen brightness. I see a lot about Win > 10 > doing so bidden or not. But do not see much about this in Linux. The issue > is > the screen is so bright at night that it bothers my wife. But we do not > want to > turn it off because if we hear something outside the first thing we do is > look at > the screen to see what the cameras are seeing. Since the machine is mounted > on the wall for viewing there is no keyboard on it and even if there was > wife > probably would not try to adjust it. > > Any ideas on how to use the on board camera to adjust screen brightness? > -- > > Chuck Hast -- KP4DJT -- > I can do all things through Christ which strengtheneth me. > Ph 4:13 KJV > Todo lo puedo en Cristo que me fortalece. > Fil 4:13 RVR1960 > ___ > PLUG mailing list > PLUG@pdxlinux.org > http://lists.pdxlinux.org/mailman/listinfo/plug > ___ PLUG mailing list PLUG@pdxlinux.org http://lists.pdxlinux.org/mailman/listinfo/plug
